|This article centers around Mona Vanderwaal, a television character. For another version check out Mona Vanderwaal (Book Character).|
|“||Game over, Alison. I win.||”|
|18 (At time of her death)|
|Dating Mike Montgomery (until her death)|
Crazy (by Spencer)
Madhouse Mona (by Caleb)
Mona Monster (by Caleb)
Freak (by everybody in school)
Mona 2.0 (by Spencer)
Ali Dee (nurse disguise is Radley)
Loser Mona (formerly)
| Leona Vanderwaal (Mother) |
| Mike Montgomery |
(boyfriend; until her death)
(faked kissed to trick Melissa)
Members of the lacrosse team
| Hanna Marin (acquaintance; former best friend) |
Toby Cavanaugh (former fellow A Team Member),
Jason DiLaurentis (was used by him for information)
Emily Fields (acquaintance)
Spencer Hastings (acquaintance/former A Team Member)
Aria Montgomery (acquaintance)
|Red Coat (formerly)|
| Toby (A Team member)
Lucas (blackmailed A Team member)
| Alison DiLaurentis |
Noel Kahn (After being dumped by him)
Vice Principal Tamborelli
Wren Kingston (possibly)
| Fashion |
The Decathlon Team (Captain as of season 3)
|Rosewood High School|
| Shoplifting |
Stalking the Liars
| -Shoplifts |
-Ripped up Caleb's love letter (exposed)
-Hit Hanna with a car (exposed)
-Hacked into school database to help Emily
-Blackmailed Vice Principal Tamborelli
-She is A (exposed)
-She took orders from Big A
-Has a fake Radley Staff ID card that allows her to leave (exposed)
-Was the Caleb imposter in "This Is A Dark Ride" (exposed to the Liars)
-She helped the liars by giving them Maya's website (possibly unbeknownst to Red Coat)
Confessed to killing Wilden to help out Ashley and Hanna.
| Pilot |
The First Secret (chronologically)
|Taking This One to the Grave|
Mona was revealed to be the first and original "A" in "UnmAsked" and was sent to Radley Sanitarium for psychological and emotional treatment. In Taking This One to the Grave, Mona was murdered in her own house. There were enough injuries to Mona to create bloodshed all around Mona's home.
Deep down inside, Mona never forgot the way Alison had previously treated her; as an outsider and dork. Ironically, Mona begins behaving like Alison after she resumes Alison's place as a Queen Bee. She taunts Lucas and calls him 'Hermie', despite once being friendly to him.
Mona is a very self-conscious person. Due to the bullying and rejection she faced when Alison was around, Mona developed a complex in which she is not happy with her life. Although she does not show this side of her in public, this is why Mona felt such a need to remain popular, beautiful, and best friends with Hanna. This is also why she started tormenting the girls as "A," because she was afraid that the Liars would steal Hanna from her, who was her only friend. She and Hanna became best friends when Alison's crowd was disbanded. Mona figures that Hanna would not give up the chance to become popular. Their friendship stays strong until the ever so infamous "A" begins torturing the girls, forcing Hanna to become closer to her old friends. The other Liars, besides Hanna, don't care much for Mona, and this is a source of conflict in certain episodes, but it ends up being much more severe then a simple annoyance when it is revealed that this is the very reason she became A; she was angry at the Liars for taking Hanna away from her after Ali's body was found.
Mona can also speak French, hack computers, and do voice impressions. Mona was revealed to be "A" in the Season 2 finale. She considers herself a genius, but also has a personality disorder (according to Dr. Sullivan). Mona is under the influence of someone in a red coat.
In Season 5 after it was revealed Alison is in fact alive, Mona forms as "army" of people who were victimized by Alison prior to her disappearance, to fight against her return. The group includes Lucas, Paige and Melissa Hastings. In the summer finale, Mona is brutally murdered after discovering what she believes to be proof that Alison is 'A'. Her assailant is unknown, although it appeared to be Alison.
In one of Aria's flashbacks, Mona is shown with glasses and 2 pigtails, trying to hang out with Alison and Aria. She asks them to wait up, but Alison tells Aria to ignore her and Aria obeys, running away from Loser Mona. Mona is crushed and wraps her arms around herself. After Alison Death Mona is first seen with Hanna shopping in the mall. They comment on each other's accessories that they stole before Hanna goes to talk to Spencer. Mona shoplifts a scarf then meets up with Hanna who shoplifted a pair of $350 sun glasses.
Mona is then seen with Hanna in class. Emily tells Aria that she and Hanna are the new Queen Bees. Aria comments that she didn't even recognize Mona.
A few moments after the bell rings for English class, Mona saunters in, asking whether she's late, cluelessly calling Mr. Fitz, "Mr. Fritz" to everybody's amusement. Mr. Fitz tells her to just take her seat. When she takes her seat, Hanna points out her mistake. But Mona said she did it on preps.
Later, Mona and Hanna are walking out of the mall, flanked with plenty of shopping bags. The two girls are happily chatting about the day's finds when suddenly they catch sight of Darren, standing in the parking lot. Mona reassures her friend that he has nothing on her, as she purchased everything legally. Hanna agrees and walks over to Darren to tell him to back off.
At school, Mona and Hanna discuss their recent shoplifts, when Sean and Noel walk over. They announce Noel's blowout cabin party planned for the next night. After they leave, Mona questions Hanna about when she is going to have sex with Sean, and Hanna reacts frustrated. Mona states that she isn't pushing for Hanna to do it, but wonders if the relationship is real if they haven't done it.
Mona is later seen at the party flirting with a guy, while wondering what is up with Sean and Hanna. Later she see's Hanna marching angrily across the lawn to get to Sean's car. Mona tries asking Hanna what is wrong and why she is taking Sean's car, but Hanna never even responds, instead driving off with the car.
Mona sits down to talk with the four girls, while insulting Spencer's date, which is the opposite of what Spencer wants people to think of Alex. At Homecoming, Mona and Hanna talk as they insult what other girls look like. Mona and Hanna get into a heated argument when Mona makes nasty comments to Lucas, who has come to photograph the dance for the yearbook. Hanna greets him warmly, but Mona shoos him away. After he leaves, the two argue over whether popularity is more important than befriendly nerds, in which Mona warns Hanna that she will not go back to being a loser Mona and will lose her friendship with Hanna if it comes to it.
Mona is throwing a birthday party for herself, which she calls "Camp Mona" and gives select invites to her friends, including Hanna and the rest of the Liars, as they are her BFF's friends. The rest of the Liars aren't interested, though Hanna tries to persuade them to come and that Mona has redeeming qualities, but they do not change their minds. This changes, though, when "A" tells the Liars that information will be revealed at Mona's birthday party.Then, Mona hears a rumor after A sends her a text that Hanna lost weight thanks to a liposuction. Mona breaks off their friendship due to anger, going as far as to dis-invite Hanna from her birthday party. She also dis-invites her because Hanna refused to ditch school with Mona, despite Hanna's mother giving Hanna plenty of cash to spend on Mona. So, ironically, Spencer, Aria, and Emily attend Camp Mona without Hanna (Just for information). Camp Mona turns out to be an over-the-top bash, complete with massage deck, food tents, makeshift hair parlor, and matching T-shirts for all attendees. Her gift table is piled high with presents. The Liars). Mr. Fitz as 'Ezra' and raises an eyebrow. She wonders about who is evil or naughty in the play and wonders how she is going to play a selfish character.
Mona is worried about Hanna's breakup with Caleb, and states she takes the blame, knowing she should have stopped him from getting to close to her friend. At the Festival she is helping Hanna with a booth and Caleb suddenly shows up. Hanna hides and Mona talks to him, while taking a letter from him to give to Hanna, which expresses his love for her. She reads and promptly destroys the letter, due to feeling the need to protect Hanna from being hurt again. Hanna does not find about this until later and thinks even more badly of Caleb as a result.
Hanna and Mona eventually rekindle their friendship; Mona calls it spiritual. They agree to keep their romantic lives (i.e. Caleb and Noel) out of discussion for the time being, while their friendship repairs, in order to avoid more arguments. However, Hanna does find out why Mona is dating Noel: "He has bad-boy cred now too." (Because of his suspension)
Isabel's wedding. Before meeting her, Mona had formed a negative opinion of Kate, based on what she considered a hideously ugly gown. However, when she meets Kate, she immediately takes a liking to her style. When Kate invites Mona and Hanna to lunch, Mona accepts, while Hanna declines, frustrating Hanna. She accompanies Hanna on a trip to a horse farm, due to Mona's pretending she went to equestrian camp in order to fit in with Kate and her friends. At the farm, they meet Kate's friends. Hanna displays her ignorance about certain cultural references that Kate and her friends make, so Mona cuts in, laughing off Hanna's remarks, trying to save her friend’s face. Later Mona and Hanna are walking through some random woods, their faces stained with dirt. The girls had managed to lose Kate's horses. Hanna gets Mona to admit that equestrian camp had never happened. Hanna snaps at Mona, accusing her of befriending Kate for selfish reasons, and Mona counters that Hanna has been bad tempered ever since Caleb left. Hanna later apologizes.
After returning to the stable, Hanna expresses to Mona her feelings that Kate and her friends were nasty towards her and also considered Hanna clueless. Mona suggests that Hanna wasn't trying hard enough, making Hanna really rail against her future step family and Kate's friends, writing them all off to hell. It turns out that Kate and her friends outside the stable could overhear the whole exchange after Hanna accidentally set her riding helmet on the loudspeaker switch. The girls rush out to undo the damage, but Kate walks away miffed, with her friends at her heels. Mona does seem sincerely apologetic about her mistake and the fallout Hanna has with Kate and her friends.
Dr. Sullivan about A. That day, Dr. Sullivan attends the school in an assembly to talk about bullying, and about people threatening you. Mona is seen during Dr. Sullivan's assembly on cyber-bullying and rolls her eyes at Hanna, mouthing the word "boring." Ironically, Mona is "A", and probably cared a lot more about what Dr. Sullivan was saying.
The familiar scene where Mona spots Aria and Alison eating their frozen yogurt as they walk is replayed. Mona calls out to join them, and Aria looks inclined to stop, but Alison propels Aria forward in an attempt to lose Mona. It is now revealed that this event took place on the eve of Halloween 2008. Mona turns around, rejected, chilled, and upset.
Later on in the school hallways, Lucas bumps into Alison, dumping his drink on her. Angry, Alison rejects Lucas' apologies, mercilessly calling him "Hermie" and publicly suggesting that he's really a hermaphrodite. When Alison walks away, Lucas growls that she will get what's coming to her, and Mona nods uncomfortably in silent agreement, having witnessed the whole exchange. How Mona ever took to calling Lucas by that same insult is a mystery.
At Noel's Halloween bash, Mona is dressed as Catwoman. Alison doesn't seem to recognize her (though for Mona that's probably a good thing) when Mona approaches Alison and with a warm hello. When Alison asks if she knows her, Mona mysteriously responds no, but Alison will. When Jenna saunters away from her own exchange with Alison, Mona declares Jenna the best Gaga, and the two introduce themselves, seeming to start a friendship.
A Hot Piece of A," she does not invite Mona, thinking her still against Caleb. However, she invites herself and Noel, claiming they're friends now. Hanna agrees, and the couple saunters away together in the Rosewood High hallways.
At the party, Mona and Noel question Hanna's decision to order 12 pizzas with green peppers as Noel is allergic. After the boat fiasco, Mona is seen with Noel outside, dripping wet, after they "took a dip" in the lake.
Later in the episode, Spencer sees Mona getting off the train in Rosewood. Apparently both had spent the evening in Philadelphia. Mona tells Spencer that Noel broke up with her, looking heart-broken. She had been on a shopping spree as therapy for her distress. She offers Spencer some of the cashmere sweaters she had bought. Spencer declines and comforts Mona with empowering words, telling her she's better than Noel. Mona thanks her and gives Spencer a rare compliment.
Rive Gauche later that night. But, when they get there, Hanna and Mona spot Jenna and Noel sitting together in Rive Gauche.
Then, Emily is intimidated and told off by Tamborelli. Mona looks on, and Emily notices her staring. She decides to approach Mona about it. She apologizes to Mona for letting Alison torture her all those years. Even though Mona puts on her nonchalant exterior, she seems genuinely effected by the apology. She sides with Emily and lets her know Tamborelli isn't so lily-white himself.
She goes out of her way to help Emily get back on the swim team by blackmailing the school vice principal. She adeptly hacks into his computer though "he changed the password" and digs up compromising information. She confronts Tamborelli herself, securing Emily's place back on the team. When Emily thanks her, Mona responds "that's what friends are for." She goes on to discuss with Emily what she should wear to go to a swim meet because she would like to come and see her. This seems to show that Mona has a very forgiving personality and only puts on a popular, not caring face as a front to protect herself. At the same time, Hanna is going through her own ordeal, being accused of sending racy pictures of Kate. Mona stands by her as well.
A." While hanging out in Hanna's bedroom to pick out clothes as promised, Hanna is again inattentive to her friend, paying more attention to her phone, until Mona receives another message from "A" and tells Hanna about it. She says that it had been happening for a few days and that the messages have been accusing her of shoplifting things. Hanna asks if any of the texts are about her, and Mona replies that there are more about Hanna's mom. She shows her a suggestive photo of Ashley and Officer Wilden. Hanna lies and says it's obviously photoshopped, to which Mona agrees. When Hanna questions what Mona would do with the picture if the mystery texter started threatening her, Mona replies that if she can live through Alison, she can survive this anonymous texting.
Later, Mona visits Hanna's house again and shows Hanna an incident report from when Hanna shoplifted the sunglasses. The report was put into Mona's mailbox by "A." "A" had ordered Mona to give the incident report and the picture to the Rosewood Observer or else she'd be filling out a police report herself. Hanna tells Mona about "A" and that the threat isn't a joke. When Mona asks about what A did, Hanna does not reply properly. When Mona wants to know what to do about the report, Hanna isn't sure but promises she will think of something in time. Mona asks her to hurry, showing the text she got from "A" which says that she only had until 10 am the next day.
The next day, at 10:15 AM, Hanna, believing that Mona turned her mom in, goes to tell Mona that she doesn't blame her. Mona reveals that she went to the jewelry store and returned the necklace she stole. The store owners called the police and it ended with Mona's mom working it out so Mona would just be serving food to the homeless. Hanna thanks her and Mona replies that she wouldn't do anything that would hurt her best friend and her mom.
At school, when Hanna passes by Mona's table, she shows Hanna another A message on an apple. Freaked out about it, she decides to take the rest of the day off because she doesn't want to be a sitting target. However Hanna invites Mona to sit with her, Aria, and Emily. Mona was reluctant first, feeling that they won't accept her, but eventually agrees sit together with them.
A." Spencer turns around and we see Mona wearing a black hoodie. Mona admits she's "A" and congratulates Spencer on figuring it out, right before knocking her out.
Spencer wakes up in a car with Mona driving recklessly towards Lookout Point. Mona says that she wants Spencer to join the A-team. Spencer asks if the reason Mona became A was her anger at them for letting Alison bully her. Mona laughs and says that she got over that a long time ago. Mona reveals that she became A because she hated them for stealing Hanna's friendship away from her. Spencer pleads with Mona to stop, encouraging her that Hanna is still her friend. As they drive, Spencer is secretly recording their conversation on her phone and sending the video to Aria's phone. Aria, Hanna, and Emily leave the ball immediately and drive to Lookout Point. When they show up, Spencer and Mona struggle, resulting in Mona falling off the edge. Spencer reaches out, trying to save her, but fails.
As the police and medical personnel arrive on the scene, Mona is revealed to have survived the fall. Dr. Sullivan makes her return to Rosewood and diagnoses Mona with a personality disorder that caused her to experience a sense of hyper-reality and omnipresence. Mona is found criminally insane and sent to an asylum for treatment. Dr. Sullivan is confident that Mona can be helped with treatment.
During the final few scenes of the episode, Mona says in a voice-over that everything has gone according to plan and that now the girls will feel safe and unlock their doors at night, even though there's still a threat against them. While in the asylum, she receives a visit from someone in a red coat. She looks up at this person, smiles weakly and says that she did everything they told her to do.
Radley Sanitarium, and that Wren Kingston is working as one of her doctors. Hanna shows up for answers, wanting to know what she did to make Mona hate her so much. Each time Mona just sits their still and almost lifeless. She has a glazed look in her eyes and remains with a stoic expression. After Hanna leaves, Mona spies as Wren and Hanna speak about her. Later when Wren calls Hanna he states that Mona is making progress and he thinks that it's from Hanna's visits. At the end of the episode Hanna tries to get through to Mona again, and asks her if she wants her to keep coming back. Mona looks over and smiles. Hanna thinks that she is smiling at her, but then realizes she is smiling at an empty chair. Mona is actually hallucinating and sees Alison holding her "Lolita" book, wearing a red coat, smiling back.
"Miss Aria, you're a killer, not Ezra's wife." - Maya knew.
"Where were we? Maya's away sleeping sweet until Garrett's all rosy count on me." - www.massugar.com
"No one to save Ali from evil." - Not safe.Mona is then sent back to her room. Later, Hanna tells Aria, Spencer and Emily that Mona was using a code that they had once used to write mean stuff about Alison on her missing flyers. Using the first letter of each word, they realize that the second code/riddle (see above) translates into "www.massugar.com" - Maya's website where she kept blog entries and videos of herself and sometimes Emily. They also wonder what "Not safe" means. Did it mean Alison wasn't safe or they're not safe?
The hospital thinks that Mona has been slipping some of her meds to a visitor. They decide to move her to a maximum-security facility in Saratoga, New York. Realizing that the girls' chances to get more answers about "A" are getting smaller, Hanna approaches Wren about convincing the hospital board to let Mona stay. Wren tells Hanna that he can't do anything about it, so Hanna gives her own formal speech to the board. However, Hanna throws her speech aside and speaks out as Mona's friend to the board. They decide to let her stay.The "A-Team", who is revealed to be Toby. She tells him about her disappointment that the plans didn't work out as they should.
Mona is seen singing the children's song "Teddy Bears' Picnic" and painting a mask, saying she wanted to do it for an art project. She turns around and a black hoodie is revealed. She says she loves Halloween, because of dressing up and tricking people. She hands the person a mixture of pills and bullets, then says "This is going to be the best Halloween ever." "I bet somebody's life on that." When a nurse is checking on Mona, she tricks them by putting her art project under her blankets, making it seem like she is sleeping. Later, a person wearing the same costume as Caleb begins to dance with Hanna. Hanna realizes that this person is a fake, and tears off their mask, revealing another mask and a blonde wig, made to look like Alison. Later, a nurse checks on Mona, and she is smiling with the second mask she was wearing on the ground, meaning she was pretending to be Caleb.
Mona is seen talking to Toby in the "A" lair. She is seen hacking into something on the computer, then precedes to tell him that she doesn't call the shots. At school, Mona is seen meeting a group of people, acting friendly and innocent. Later, she is seen in her "A" gear and is seen in Toby's apartment, sitting at the table Spencer set up for her and Toby's anniversary, smiling. It could be implied that she placed Toby's Radley I.D. in his desk to be found. She could have also changed his locks. Earlier in the episode, Mona said were all set for "tomorrow" (possibly meaning that the next day was Spencer and Toby's anniversary), meaning that she and Toby planned for him to be exposed.
Mona tells Spencer that she would hate to see Toby drive all the to the Academic Decathlon competition just to cheer for her. She also says that she's been off her "A" game lately.
Mona is quietly sitting at a lunch table with the rest of the Decathlon members. She doesn't say anything when Spencer accuses her of taking her off the team or when she asked "is there anything else you want to take away from me?" Mona would send the "good doctor" Spencer's way. She is at the Decathlon practice and starts to talk to Spencer about her being cray-cray, her break up, and if she has any friends. Spencer snaps and attacks Mona, Mona would get help up and says she's fine.
Mona, mentioned by Spencer, is in New York during the time Spencer was locked in the sauna. Mona is at the Brew ordering a latte, when Spencer confronts her about "Deepest Sympathy" wreath. She claims she has know idea what she is talking about, but tells her not to put the orchids in sunlight like she did-they didn't make it the through night- before leaving. Mona is at the Brew again when she gets a phone call and leaves, with Spencer following her. She ends up at the woods and briefly disappears, however, just as Spencer is about to lift Toby's helmet off his head, she reappears and says "He's dead." This leads Spencer to chase Mona, Mona would get away.
Hasting's she plays "third degree" and reveals what she knows and doesn't know. In the morning when the girls wake up Mona has disappeared but then she brings in their favorite coffee drinks and breakfast. She won't hand over the computer chip but agrees to take them to the A lair. In the lair she tells them that Wilden and Melissa were dressed as the Queen of Hearts on the Halloween train and has a video showing Wilden, but someone hacks and deletes the file before the second person is shown. They hear voices outside the trailer and find five young girls dressed as each of them with a matching doll, including Mona. The girls say "Ali" has been playing with them since Mona moved in, meaning someone was keeping an eye on her without her knowing.
Mona tries to rekindle the friendship with Hanna and the two go shopping one day after school. It is clear to Mona that Hanna is just pretending and hands over the computer chip as a gesture of goodwill. She points out that they once did have a true friendship.At Wilden's funeral when Spencer goes to check the casket for damaging evidence Mona shows up claiming she must have received the same message from 'A'. They find a cell phone which ends up being Ashley Marin's. As the funeral begins the girls are asked to sit with Jessica DiLaurentis but they don't leave room for Mona who seems hurt. In the final scene we see the The Lady in Black in the lair and she places a doll of Mona with the liars in the dollhouse, implying Mona is now one of the liars.
Turn of the Shoe The Liars are at the Brew, discussing The Lady in Black, Melissa's whereabouts, and the night of the fire. Mona comes into the Brew where the girls are and says that she has been thinking a lot about the Ali thing and Hanna then accuses Mona of putting Hanna’s mom’s phone in Wilden’s coffin. Mona says no and says she will do anything to prove that all the girls are in this together, so Spencer says to take them to A's RV.
Mona drives up to where the RV is, with the girls in separate cars behind her. The girls arrive and Mona opens the gate to where the RV was, and is in shock when the RV is gone, and the girls think that Mona has taken it somewhere else. Hanna and Spencer leave in their car, while Aria and Emily wait, and they watch Mona. Mona gets into her car and then all of a sudden, from the back seat, a hooded figure with an Ali mask starts to choke Mona. Mona tries to reach for the flashlight and Aria and Emily see that Mona’s car lights are flashing, so they start walking to the car. Mona finally gets the flashlight and whacks A with it and jumps out of car, and onto to the ground, gasping for breath Aria and Emily run over to her. Mona’s car starts up and A drives the car and tries to run over the three as they narrowly escape by jumping out of the way. According to a text Aria sends to Hanna the next morning, Mona finds her car abandoned being the school an is freaking out. At school when English class ends and Spencer hangs back, Mona says they'll meet her at the courtyard to the surprise of the other Liars.
As Aria is driving home from her self defense class she spots Mona talking to a cop in front of the police station. Aria drives up to them and acts like she is picking up Mona and tells her to get in. Mona does, and Aria gets mad at her saying she can't be seen talking to police in broad daylight because if she can see her, so can A. Mona says she did that to eavesdrop on other cops about any info they have on Wilden's murder. She says she heard them say taped off the south shore of Torch Lake. They found Wilden's footprints there and think he was there the night he was killed. They also found a woman's footprints, high heels. Mona says they are the kind Alison liked to wear.
Mona is eerily absent. The Liars discuss in the opening scene that she was missing from school. They want to hide Ali's stuff they got from Jessica DiLaurentis before Mona sees it. Emily points out she's more concerned when Mona isn't around then when she's with them.Under The Gun
Mona shows back up at The Brew wanting to talk to Spencer. Spencer insists that she can say whatever it is in front of Aria and Emily and Mona reveals that Toby gave A the RV lair and Spencer was hiding it from them. Mona may not be A anymore but she can still do reconnaissance and has evidence. Spencer admits what Mona is saying is true. Later at school, Emily goes to Mona saying she "wants in" and wants to know what she found on Toby. Mona says she wishes she knew and points out that she is not the one pulling the strings anymore and all she has is an empty RV. Since A has proof of everything bad she and the Liars have done, with one wrong move everything could go up in flames.
Mona is helping Hanna with a plan to save her mom from a conviction, but since Caleb doesn't trust her, she proves her loyalty in an unexpected way by admitting she was the one who killed Wilden.
In this episode Mona sticks to the fact that she killed Wilden. And puts up quite a performance when she is interviewed by a detective. However Mrs Hastings reveals that some of the evidence does not match with what Mona is saying. Mona is later take n back to Radley where she devilishly smiles at a piece of carved writing stating 'will the circle be unbroken'
The Mirror Has Three Faces n Radley, Wren passes Mona a sketch of a happy-looking family on a farm and asks for her emotional response. Mona says that it's a happy picture and Wren asks her how it makes her feel. She replies, "happy", and he asks what her response is. She makes a sarcastic comment about the artist's drawing ability.
Wren wants to know how she feels about what she's said she's done. Mona says that "Look, those girls used to make me feel bad. But recently I've realized that... we're on the same side." She says that she wanted to make up for all the bad things she's done, and that Wilden was bothering them so she got rid of him, and she'd do it again. As he takes notes, Wren says he doesn't think she got rid of anybody, and he'd like to know if she's going to be honest with him. Mona asks why would she ever be honest with him, to which he says that she used to be. Mona replies that that was before she realized where his loyalties were. Wren says he doesn't know what that means but he thought that they'd trusted each other when she was first a patient there. Mona says that that was before she found out that he was keeping secrets from her. "By the way, you forgot the 'g' in 'diagnosis'."
Wren's notes on Mona read: "Dianosis: Extreme distrust and paranoia. Delusions of persecution." He says she's the one who's been keeping a secret, and he knows that she knew that he would figure it out. Mona asks figure what out, and Wren says "You stopped taking your medication."
The Liars, including Alison, as missing. Displeased, she turns to put on her jacket, and tells someone in a red jacket, that "this changes everything". Mona is next seen talking to someone on her cell phone, before telling Lucas that the Liars are not in Philadelphia, they're in New York.
Mona has congregated an army of people who were victimized by Alison prior to her disappearance, to fight against her return. The group includes Lucas, who was the first member, Paige and Melissa.
Aria comes home to find a Mike and Mona sitting next to each other holding hands. Mike leaves the room for a brief moment, telling Mona he will take her home, but Mona insists Mike drops her off at the library, for research. Aria claims that Mona is doing her 'research' in her house, but Mona refutes this, by telling her Mike invited her over. Mona then hands Aria her own whistle, claiming that she doesn't want what happened to Alison happen to another girl. Aria interrupts this as a threat, and tells Mona that the Liars know exactly where Mona was on the night Ali disappeared. In return, Mona asks Aria how Ezra is doing, letting Aria know that she knows what happened in New York and that their cover story is a lie.
Alison is at the mausoleum, to say goodbye to the girl who died, when Mona comes up behind her. Mona tells her that it was she who sent the threatening text, and that she should of signed her real name, telling Alison that "I don't have to hide, you do. And you're gonna wish you stayed dead," before walking off.
In a flashback, Mona approaches Hanna outside of Lucky Leons and comforts her about Alison’s disappearance. She says that being missing for two months is not a sign that Ali will return and that someone needs to take her place.
In a second flashback, Hanna and Mona are in Hanna's bedroom, with Hanna having lost her extra weight over the summer. Mona tells Hanna that her new appearance calls for a new wardrobe and when she picks out a top that used to be Alison's, Mona urges Hanna to try it on.
In a third flashback, Hanna and Mona are strutting their new looks through the halls of Rosewood High, gaining everyone's attention.
In the present, Hanna spots Mona in the Brew and approaches her. Hanna tells her that Mona essentially turned her into Alison, but Mona tells Hanna that she wanted the change as much as she did.
Mona and Lucas are in a darkened classroom at Rosewood High, where Mona calls Lucas naive for thinking they can just call everything off. Lucas tells her he’s having second thoughts, but Mona tells him what they’re doing isn’t punishment, it’s a preventative measure. To get him back on her side, Mona tells Lucas that Alison’s story is just that, a story, and she can prove it.
As Spencer, Hanna, Aria and Emily eat lunch outside, Mona keeps an eye on them from the stairs at the entrance of the school.
Mona watches as Paige, Emily and Sydney talk and eat pizza, before making eye contact with Paige who notices her a few tables over.
Mona approaches Paige who is putting some things in her car. Paige asks what Mona is doing as they have nothing to talk about. Mona disagrees and Paige tells her that her answer is still no. Mona tells Paige that she heard Alison’s dad wanted to take her away from Rosewood, Ali doesn’t want to go, but maybe they could change her mind. Paige again tells Mona that her answer is no. Mona tells her that she doesn’t get to be some kind of social Switzerland, “if you’re not with me, you’re against me”. Paige says she not with anyone, but Mona tells her she is, “sure you are. At least you want to be. And Emily’s with Ali”.
After Alison closes a rattling window in Rosewood Church, she turns to find Mona standing behind her. Alison tells her that she doesn’t scare her, and Mona in returns tells Alison that she’s not as good of a liar as she used to be. As Alison walks away, Mona says that she knows Alison and the others were in New York the night Shana was murdered, and she can prove it. Alison asks Mona what she wants, and Mona tells her that she wants Alison to leave town, to which Alison assure Mona that she is no threat. Mona says that while Alison may have convinced Hanna and the other girls that she's changed, and maybe she is trying to be a decent person, but it won't last long. Alison demands to know what Mona is suddenly the victim of, and reminds Mona that she almost killed Hanna. Mona tells her no one feel worse about that than herself, but she’s all better now, “even the doctors say so”. Alison doesn’t believe her, and says that if Mona could prove that they were in New York, she would have done it already. Mona tells her “no one wants you here”, but Alison tells her she’s wrong and that everyone wants to be her friend. Alison goes on to say that all she had to do was apologise to Cindy and Mindy and they were practically begging her to sit at their lunch table, so it won’t be long until she wins over Mona’s army of losers, while reminding Mona that Alison made her Mona Loser once, and she can do it again. Angry and upset, Mona slaps Alison. Recovering from Mona's hit, Alison slaps her back, cutting her face and demands Mona to leave her alone before she turns and walks from the Church.
When Alison and the other Liars walk into the cafeteria at Rosewood High, Mona and her army band together and confront Alison. When Spencer says they’re not afraid of Mona, Mona steps in front of Cindy and Mindy, “afraid of me? What lies has she told you? Alison attacked me last night, and when she started saying things like she could make me disappear, I turned my phone to video”. Passing her cell phone to Spencer, the Liars watch Alison’s verbal attack on Mona which included Alison slapping her.
Pulling up to a picnic ground, Sydney and Jenna step out of Sydney's car. Walking over to Mona, Sydney informs her that the Liars do not want things to go back to the way they were. Jenna says that they remember the way Alison treated them, like they were her dolls. Mona is happy by this and thinks that maybe they can get rid of Alison. The three girls turn to look as a third car pulls up.
Mona is watching the Cavanaugh house when Emily walks past, commenting that she’s a little out of her neighbourhood, and Mona tells her that “sometimes I just like to walk”. Saying that it’s pretty awful, how things change so quickly in “this town”, Mona goes on to say “somebody’s your girlfriend, then they’re not. One day there’s a house, then the next day, it’s gone. Poof”. After Emily says to Mona that if she or one of her goon squad played that trick on Paige, but before she can finish, Mona cuts in, telling her that she can call her a lot of names, “but don’t call me an amateur. A dead rat, really?” Telling Emily to give her love to Alison, Mona turns back to take one last look at the Cavanaugh house before walking away.
Mona is singing a song, still waiting for her audition, when Hanna snaps, telling her that they get it, she can freaking sing. As Ms Adinolfi calls the next group of people for their auditions, including Mona and Hanna, Mona faints.
Regaining consciousness, Mona asks Hanna what happened, and as she tries to sit up, Hanna tells her to lie back down and explains that she fainted. Mona asks Hanna where her bag is, and when Hanna says that it’s over there and that Ms Adinolfi is on the phone with Mona’s mom, Mona tells Hanna to give her bag to her, “I need my bag”. While Hanna is getting Mona’s bag for her, Mona calls out, “Hanna, my bag”.
Mona is sitting in a car outside Rosewood Police Department when Hanna gets in and comments that she recovered quickly. When Mona questions that Hanna followed her, Hanna tells her she did, before asking whose car they’re in and if it’s a rental. As Mona tries to say something, Hanna says that there was a mug shot of Cyrus Petrillo in her bag, and either Mona set this whole thing up or she’s been blue-scarfing the inside scoop. Correcting Hanna, “snarfing, blue-snarfing”, Mona says that she didn’t set “this” up, she’s trying to find out who did. Hanna tells Mona she is to, and when she picks up a two way radio, asking what it does, Mona tells her to get out. Hanna mentions that they both know Alison brings the ‘A’ out in her so whether Mona set it all up or not, she doesn’t trust her. When Hanna says she’s not leaving until she finds answers, Mona starts packing up her things and says that if Hanna won’t leave, she will. Hanna asks if she’s sure she wants to do that, and following Hanna’s eye line, Mona watches as Lieutenant Tanner, Kenneth and Alison get into a car. As Hanna asks what they’re doing and what they do now, Mona reopens her laptop and says “we do nothing”. Hanna says that they have follow them, and for Mona to do something, to which Mona tells her that there’s no need to follow, “we just got access to Tanner’s phone”. Listening as Tanner tells control she’s transporting witness to 5th street house, Mona tells Hanna to take off her seat-belt, “we’re not here to follow her”, and passing Hanna the mug shot of Cyrus Petrillo, she adds, “we’re here to follow him”.
Hanna asks Mona how long until they release Cyrus, and Mona tells her that according to Tanner’s emails it could be any minute, “he could go out the front or the back”. Hanna comments that she would say they split up, but she doesn’t trust Mona telling her what she saw, and Mona tells her that the feeling is mutual. Hanna questions why Mona told Ms Adinolfi she fainted because of a panic attack, and Mona tells her that’s because she did. As Hanna questions since when does Mona have panic attack, Mona wonders since when does Hanna get sauced before third period. When Hanna doesn’t answer, Mona says that she’ll say it if Hanna won’t, “since Ali came back”, and then explains that’s why she went on the offensive, “she scares me to death. I just didn’t want to face her alone”. After Hanna gets a phone call from Caleb, Mona comments that Hanna is lying to her boyfriend again, “nice”, but Hanna retorts by saying as if Mike Montgomery knows a single real thing about her. As Tanner’s voice comes over the radio, Mona turns up the volume and they listen as Tanner says that the witnessed identified 5th street house and for them to not release the suspect.
In the movie theater, Mona looks up to Aria when she arrives. Byron explains to Aria that her mom had to cancel, and Mona comments, “lucky me”, before patting the seat next to her. As the doors of the theater open, Mona looks over her shoulder and watches as Paige and her date make their way to their seats.
As the film is showing, Mona looks adoringly towards Mike. While captivated in the film, Aria leans over to Mona and whispers something in her ear. Suddenly taken aback, Mona whispers an “excuse me” in Mike’s ear and gets up to leave the theater.
Dabbing away tears in the ladies room, Mona tells Aria that she is very good, she knows where to put the knife “and you’re not afraid to twist it”, when Aria comes looking for her, “Alison underestimated you”. As Aria says that she’s sorry, Mona tells Aria not to insult her, and that she’s right, Byron should hate her, “he should throw me out of the house. After all the things I’ve done to you. The way I treated Mike”. Mona comments that Mike deserves someone better than her, someone nice, “which I am not”. As Mona says that maybe she should have just died when she fell off that “stupid” cliff, Aria tells her not to say that, don’t ever say that. Mona explains that she was just trying to protect herself, that’s all she’s ever been doing, “protect myself from her”, and when Aria asks if that’s why she built an army, Mona says that it’s hard to keep the troops in line when Alison offers them candy and a smile and that lilting little laugh. Fluffing her hair and wiping away fresh tears, Mona tells Aria that maybe she won’t believe this, but she’s going to say it anyway, “when she finishes with me she’ll come after you and the others. She can’t trust you anymore. Not after Cyrus and… not after New York”. Taking a step closer, Aria asks questions her about New York, and Mona says that she knows some things, and she can guess at some others. Mona says that she has to ask Aria something, and when Aria asks her what, Mona questions if she thinks Mike really likes her.
At the Vanderwaal Residence, Mona is sat on her bed reading a book while there is a knock on her door. Mona tells the person to come in and we see that it is her mom, Leona, who tells Mona that she has company. When Mona asks who is it, Leona tells her to come see for herself. Downstairs in the lounge, Mona sees that the company is the liars minus Alison. Mona asks the liars what's with the grim faces and asks if somebody died. Hanna tells Mona that the liars need her help. As Mona begins to answer, we hear Leona opening the fridge therefore Mona replies to Hanna in a lower tone asking what has she done now meaning Alison. Hanna states that she has not done nothing yet while Aria adds what they think she is about to do which Emily then adds that Alison is at the police station and she is talking to the cops. Mona asks whether they know what Alison is telling the cops. Spencer replies that a lie is halfway around the world before the truth has a chance to get its pants on. Hanna asks whether it was Alison that said that before both Mona and Spencer correct her at the same time telling her it was Churchill. Hanna states that the liars have been lying for Alison ever since she got back to Rosewood, therefore they need to know which story Alison is telling the cops. Mona is confused and asks why don't they ask Alison. Emily tells Mona that they don't believe that Alison will tell them the truth. Mona asks the liars why they think that she can help them. The liars exchanged looks before Aria replies telling her that she is Mona.
Back at the Vanderwaal Residence, Mona tells the liars that Alison stole her life from her when Alison crowned her Rosewood's biggest loser. Mona tells the liars that Alison was so convincing that even Mona was starting to believe her. Hanna asks whether this means that Mona will help the liars. Mona explains that even though she owes the four liars for everything that she has done to them in the past, she is already number one on Alison's hit list therefore if Alison was to find out that she has sided with the liars, she is afraid to think of how far Alison will go to stop Mona. Spencer asks Mona if she is really that scared of Alison. Mona replies by asking Spencer "aren't you?". Spencer looks on while Hanna exchanges looks with her. Mona continues by asking them if they are scared of Alison, is the reason that they are at Mona's. Leona enters the lounge telling them they she didn't mean to interrupt their girl talk and that she has brought them chocolate chip cookies and asks Hanna if they are still her favorite. Hanna smiles back and politely tells her that it was nice of her to bring them cookies before Emily tells her that they have to go. Leona tells them that she will send some cookies home with them and that she will be right back. Mona asks the liars if they have ever been so focused on one thing, that it takes over everything else and turns you into someone that you are not. Mona states that she took all of her Alison anger out on the four liars and that she is sorry for that. The liars acknowledge her apology and begin to walk out, however Hanna approaches Mona and tells Spencer that she is waiting for the cookies. As Spencer, Aria and Emily reach the door, Aria asks Spencer if she has decided what she is going to do with Melissa's recording. Spencer states that Melissa sent her the video to make sure Spencer knew the truth and that the confession does not actually help any of them. Emily states that Melissa said it out loud that she buried Bethany and that she killed her. Spencer replies that she only did that because she thought Spencer had hit her. Aria clarifies that Spencer did not hit Bethany, however Spencer tells her that it doesn't matter in Melissa's story, Spencer is an accessory to murder at the best case scenario. Leona brings over the cookies in a Tupperware box. Hanna thanks Leona for the cookies. Mona tells Hanna that she will see her at school before Hanna agrees. Mona walks away to back to her room. Hanna tells Leona that it was nice to see her. Leona asks Hanna whether now Alison is back, whether the bullying is starting again. Hanna tells her that she does not know what Alison is doing, as they are not friends however she does believe that Mona is afraid of her, and adds that they all are. Back in Mona's bedroom, she is dialing someone. She tells them to gather the troops and send out a code A as Alison is plotting something big.
At the brew, a worker opens the locked door for Mona, Mona tells the guy to lock the door as she believes someone is following her. Mona is shocked that no one has turned up and asks where everybody is. Lucas arrives out of the back and tells Mona that they are not coming as Alison has got to them and they are convinced she is the saint and that Mona is now Crazy Mona, which is what they are calling her now. Mona looks on defeated before looking into the mirror. Mona asks Lucas whether he thinks a person can be crazy without knowing it. Lucas tells her that if she starts to believe this, Alison wins, however Mona states that she is talking about Alison and that Mona believes Alison has gone full on socio.
In the Rosewood High School bathroom, Hanna, Emily, Aria and Spencer have gathered to meet Mona. Mona tells them that Alison volunteered to take the polygraph test. Emily asks how she knows that before Hanna tells Emily that she is Mona. Mona explains that after they left her house last night, Mona did some recon. Spencer interrupts telling Mona that Alison would never put herself at risk unless she believed her story. Mona tells her that if you believe a lie, it becomes the truth and why lie to yourself unless as Hanna finishes the sentence, unless you did something so bad, you don't want to believe you did it. However Mona tells them she meant the person is playing a game. Aria asks Mona whether she thinks Alison took the lie detector test for fun. Mona replies saying she thinks Alison took the test because she is not having fun anymore as Alison can't play with her dolls if you won't let her and that this is how Alison is ending the game. Hanna asks Mona what game before Emily adds the 'A' Game before Mona expands, saying the game she stole from Mona. Aria asks Mona whether she thinks Alison is now 'A' before Mona nods yes. Hanna states now they are all having bad thoughts. Mona explains that Alison had assembled the perfect group, Smart, Loyal, Admiring and Compassionate. Aria asks perfect group for what before Spencer realizes that these people are who a sociopath would manipulate. Mona states that Alison would have gotten bored with any one of the liars but all together they are a challenge. Aria says that she never knew why Alison chose her as a friend and asks what made her so special. Mona replies telling Aria that when you don't feel anything, it must be really fun to mess with someone who feels a lot and that Alison picked Aria because Aria cares and Alison can't. Emily then asks if they are really saying that Alison is A out loud. They all exchange looks in agreement before Emily states that Alison had never left her as Aria adds that Alison had never really left any of them. Spencer tells the Liars that if Mona is right, that if Alison is ending the game because the Liars had cut her off, then Alison has gone to the police station to convince the police that she is innocent and that the Liars are the guilty ones. Aria asks what are they guilty of before Mona tells her everything. Mona tells the Liars that she can found out everything Alison had told the cops and that it might give them a fighting chance to get their stories straight. As Mona goes to leave the girls bathroom, Hanna asks her why is she helping the Liars. Mona turns around and states that she got early acceptance letters from three colleges however she still needs to survive senior year and that she can't do it alone. Emily states that they accept her help however it does not make them best friends. Mona tells Emily that she does not want to hold her hand in the corridors and that no one can know that Mona is helping the liars, including their "bed buddies" or the deal is off. Mona tells them to do whatever they was going to do today and to act normal. At that moment Cindy and Mindy walk in the bathroom as Mona greets them. Mona and the liars leave the bathroom as Cindy and Mindy come back out of the stalls exchanging looks.
Leona Vanderwaal is seen walking out of Principle Hackett's room. She runs into Mona and lies, telling Mona that she was here delivering food for the food bank as Mona forgot to bring the bag this morning. Mona apologises and tells her that her mind is on the holiday break. Leona assures Mona and tells her that it is no big deal. The bell rings and Leona tells Mona not to be late for class. As Mona is walking to class, she sees Alison surrounded by a new group of friends. Alison coyly smiles at Mona before Alison is called to Principle Hackett's office. Alison smiles at Mona while she passes her.
At the police station, Lucas approaches Barry Maple and inquires about the high school liaison program. Barry tells Lucas to wait here while he goes to get him an application form. While Barry is gone, Lucas plugs in a bluetooth device into Barry's computer and texts Mona to start hacking. In the Police Station bathroom, Mona receives the text and begins hacking into Barry's computer to find the results from Alison's polygraph test. Mona encounters some trouble as she needs the admin password however she manages to get around this and starts copying all the files.
In the kitchen, the Liars and Mona are watching Alison's polygraph test on the laptop. They hear Alison tell the instructor that she last saw Spencer Hastings come into her house. Alison declares that she was unofficially the leader of the group and that she thinks the Liars would have done anything for her if she needed them to. She states that as far as she knew, Spencer was a loyal friend. Alison explains that Spencer was at her house and that it was her fault as she pushed her to that place and that Spencer was angry. Alison says she found out Spencer was on drugs as she dropped her pills. Alison states that Spencer was emotional and that she promised Spencer she wouldn't say anything. She states that she wouldn't know what Spencer would do in return for her silence as they never discussed it again. The instructor asks if she has anything else to say. The liars look on nervously as Alison states that she did not have anything to do with Bethany Young's murder.
Back at the Hasting's Residence, Emily rules that nothing Alison said was incriminating however Mona believes that the questions they was asking was telling them more about the investigation than Alison's answers do. Hanna asks what Mona means by this and Mona explains that by asking whether Spencer was a loyal friend would she be desperate. Spencer asks what would she be desperate enough to do before Caleb walks through the door and answers that Spencer would be desperate enough to kill Bethany. Hanna states that Caleb was meant to keep this secret but he states that Mona came to him. Mona adds that she knew Hanna would go to Caleb so she asked for his help. Caleb explains that he has unlocked two more files and compliments Mona on her decoding software and asks if it is military. Mona explains that Caleb does not want to know the answer to that. Caleb explains that the cops was granted access to Bethany's Radley files yesterday but he can't open the link but he did find a statement Holbrook had sent which states that Alison is no longer a person of interest in Bethany Young's murder. Alison is totally off the hook as Aria points out however Caleb now states that Spencer is on the hook as the information obtained for Bethany Young's medical records prove a theory they have been working since day one that Spencer Hastings murdered Bethany Young to gain favor with the group's leader, Alison. Hanna wonders why killing Bethany would score points with Alison. Spencer adds that Alison had told the police that she knew Spencer was taking the pills so the police will think Spencer would have done anything to make Alison keep it a secret. Aria asks why the police would think that Alison would want Bethany dead. Mona clarifies if this was sent to the DA and Caleb nods. Spencer realizes that they have sent this to the DA so the DA can issue an arrest warrant. Spencer asks the Liars to find Toby while she goes to ring her parents however Mona stops her and tells her that before she rings her parents, wouldn't Spencer want to know what the cops know as it was sent the day after the cops had access to Bethany's files. Emily agrees and suggests that maybe something in the files link Alison to Bethany and that they should find that out. Spencer tells them that this on her and that the Liars don't need to do anything else however Hanna tells Spencer that they are gonna stick together as that is what they do. As the Liars rally around Spencer, Mona looks like she feels like out which Caleb notices. Spencer looks up at Mona and tells her they need to go back to Radley together.
Spencer and Mona are dressed up as nurses and are entering Radley through the staff entrance meanwhile Caleb is hacking the Radley security through his laptop while Hanna is on lookout sat in Hanna's car. Hanna tells them it is code go as Spencer and Mona enter Radley. In Radley Mona and Spencer are walking through the corridors until Spencer receives a text. Mona tells Spencer that Emily has not checked in therefore she better make sure that text is not from A. Spencer asks Mona whether she means Alison. The text is from Toby who asks if Spencer is coming to his graduation at the grille. Spencer worries and tells Mona that they should have told Toby what they was doing however Mona tells Spencer that although it is none of her business, but if Toby is graduating from the Police academy, he wouldn't want to know that his girlfriend has broken into Radley. Spencer tells Mona that she needs to make it to the ceremony so Mona tells her to stop chatting and get going. Mona then tells Caleb they are in the ace corridor hall approaching the security door which Caleb hacks allowing Mona and Spencer through. Back at Radley, Aria is in the day room with some patients while they are painting. Aria compliments a patient Sandy on her work. At that moment she sees Spencer and Mona reach the day room through the window. Aria gives them a nod to continue to the file room. Aria knocks over a jar of red paint which smashes all over the floor. The nurse at the main desk comes into the day room and grabs some paper roll to hand to Aria while Aria apologizes for the paint. As Mona and Spencer are entering through the day room, Aria distracts the nurse by telling her she wanted to be a dancer while growing up but she realized she was on the shorter side. At this moment Mona grabs the keys from the nurses desk and enters the file room. Aria apologizes the nurse again while she leaves the day room and locks the security gate.
Outside Radley, Hanna and Caleb, are watching the staff entrance. They see a black car pull up and watch Detective Holbrook enter Radley through the staff entrance. Caleb pulls down the sun block in the car which cause pieces of paper to fall down. Hanna tells Mona red light. Mona and Spencer arrive at the file room and tells Hanna that they are in. However Hanna says red light as in the red light on top of the cop car. Mona and Spencer exchanged worried looks.
Back at Radley, Mona and Spencer have found Bethany's file. Mona tells Spencer that it seems they recorded every one of Bethany's sessions. Spencer asks Mona what are her college choices and Mona replies Yale, Harvard and Dartmouth. Spencer then asks if she got early acceptance into all three and Mona adds that Brown did too but as they are not offering her a full ride, she is passing on their offer, she then asks what choices Spencer has. Spencer tells Mona that she has not heard from any colleges yet. Mona offers her help but Spencer tells her that she thinks Mona has done enough. Spencer carries on reading the files while Mona starts to place different files and the recordings in her bag. Spencer asks if they are stealing the stuff but Mona claims they are just burrowing it. Spencer asks for a tape for August the 8th which Mona finds and puts in the recording device. On the recording Bethany claims that she thought she really liked me but everything she really said to her was a lie, every word and every visit. Mona asks Spencer who she was talking about and Spencer tells her that she was talking about Mrs Dilaurentis as she was having an affair with Bethany's father making Bethany and Alison half sisters. Bethany's recording keeps playing and Bethany claims whether she can trust anyone in that family and wonders whether it is like mother, like daughter. Mona stops the recording and Spencer wonders if Alison had known Bethany.
Back at Radley, as Spencer and Mona are leaving the file room, they see Holbrook blocking the way they got into Radley. Hanna tells them to use the back staircase as they can trip the emergency exit. Spencer and Mona hurry to the back stair case. Outside Radley, Aria enters the back of Hanna's car. Hanna asks Aria what Holbrook is doing there and Aria states he is asking questions about Spencer. Spencer and Mona make it out of the back staircase as Spencer receives a call from Toby. The call has bad reception and as Toby picks up his phone, he is hit by another vehicle.
At the Vanderwaal Residence, Mona is going through all the material they took from Radley while replaying Bethany's August the 8th recording. Leona shouts for Mona and Mona tells her she will be coming down now. As Mona is leaving her bedroom, she receives a text from Hanna telling Mona that Spencer has been arrested. Outside the house Mona is helping Leona put food into her car as they seem to be going elsewhere for dinner. Leona tells Mona that Leslie is going to be there and Mona is excited to see Leslie. Leona tells Mona to make sure that she gets on the road within the hour as she does not want Mona to be stuck in traffic. Mona tells her she will just after she finishes the report. Mona watches as Leona drives away and head back towards her house. Mona hears ruffling in the bushes and stops to investigate. As Mona walks onto her porch, there is a blonde figure in a black hoodie stood at her gate. Mona enters her house and looks out of the window and the figure has gone. Mona locks her front door and heads back upstairs to her room.
At the Montgomery Residence, Ezra has arrived with the pies, Aria states that her mum is still on the phone with Veronica and that they have not seen Spencer yet as she is still being processed. Ezra assures Aria that they are working on her bail and they will have Spencer out of jail in no time. At that moment, Aria's phone rings and its Mona on the other line, who tells her that Alison lured Bethany to Rosewood as she knew about the affair and Alison set her up as she was jealous and she wanted Bethany dead. As Mona is upstairs on the phone, the figure is seen pick locking the front door, entering the house and walking upstairs to Mona's bedroom. Mona is still on the phone to Aria and tells her that Alison is A and that she can prove it. Aria hangs up the phone and tells Ezra to grab his coat as they are going to Mona's as she has found proof Alison is A.
Back in Mona's bedroom, Mona is looking into the mirror. She tells Alison it is game over as Mona has won. The floorboards behind Mona creak and Mona shouts to see if it is her mom. The figure enters Mona's bedroom as Mona turns around and gasps while falling back onto her dresser. Hanna, Emily, Aria and Ezra enter the house to see blood everywhere and the place trashed. Hanna shouts for Mona. Hanna and Emily run upstairs to see if Mona is there while Aria surveys the living room full of blood. We hearing screaming from outside the house. The police eventually arrive and have taped the house off. Leona looks on concerned as the Liars look on crying and shocked. Behind the vans, Alison looks on smugly. Holbrook approaches the reporters and determines the investigation is on going and they have ruled it a homicide. Although they did not find a body, the amount of blood would indicate the victim's wounds was fatal. Holbrook then declares that Mona Vanderwaal was murdered and Leona breaks down crying at this news. The liars are even more upset and Lucas has arrived and is shocked also. Back at the vans Alison is still smiling while surveying the emotions of everyone and begins to walk away.
Outside the Field's residence, the Christmas decorations are all lit up. -A approaches the nativity set and takes Jesus out of the crib and replaces him with a Mona doll. -A takes the Jesus doll to the trunk of their car and opens it. In the trunk is Mona's body, all pale and covered in a blanket. They then places the Jesus doll on Mona's body. There is a close up of Mona's face and it shows that Mona was crying when she was murdered.
Season 1 (11/22)
Season 2 (15/25)
Season 3 (14/24)
Season 4 (13/24)
Season 5 (11/25)
- It is unclear who's side she is on, A's side or The Liars.
- Janel Parrish had a recurring role for the first two seasons, but was upgraded to a series regular for Season 3.
- In Touched by an 'A'-ngel, we learn that Mona can speak French conversationally, which is also referred to in the end of the episode Je Suis Une Amie.
- Mona wanted to be friends with Hanna after she saw her bow after doing a backflip on the trampoline and puking.
- In The Naked Truth, we learn that Mona can do perfect impressions of people. We also learn that, like Caleb, she is quite good at hacking. She was able to easily access the school's private database, even though she did not know the password.
- The lyrics Mona sang in Kingdom of the Blind, are:
- In the eye abides heart
- Every pure and tender feeling
- All emotions worth revealing
- Through the eyes their charm impart
- In the eye abides heart
- which is a song by Beth Nielsen Chapman; the song was written in 1841 and was originally composed in German as “In den Augen liegt das Herz” by Franz von Kobell.
- Mona secretly gave Hanna a website and other words like "Maya knew." and "Not safe."
- In Crazy, Mona says "I miss my dolls." In The Lady Killer, once Mona gets to visit the new lair, we see her dolls of the girls in the dollhouse and their accessories laid out in front, as if she had just been playing with them.
- At the end of the video Mona made in She's Better Now, Mona is heard talking to an unknown person, who seems hesitant, and asked him/her to back out if they can't take it.
- Mona and Hanna's friendship seemed to have survived throughout season 3, but ended officially (at least for now) in Mona Mania.
- Mona's personality is slowly revolving around Spencer (she joins the Decathlon Team, she starts to dress like her [scholarly and preppy], she listens to classic music, and even "admires" and "respects" her).
- Mona's last name was spelled Vanderwall in Season 1 and 2 but it was changed to Vanderwaal in Season 3 for unknown reasons, most likely because that is how Sara Shepard spelled it in the series.
- Mona is set to become the 5th Pretty Little Liar as she is now being targeted by A as well.
- Mona is the one who convinced Alison to disappear.
- Mona is the A who tormented Alison.
- Mona was murdered by an unknown assiliant in the Season 5 Mid Season Finale Taking This One to the Grave.
- Janel Parrish originally auditioned for the role of Spencer Hastings. After being informed she did not get the part, she re-auditioned for the role of Mona, and got the part.
- In "Never Letting Go," Mona mocks Aria at the fashion show dress rehearsal while Aria is practicing her catwalk: "Are your legs always that short, Aria?" In the same episode, Spencer alludes to Mona being five feet tall. Mona's and Aria's wikia page both show that they share the same exact height: 5'2"!
- Mona along with Hanna has appeared in character in commercials for TRESemme hair products including TRESemme Climate Control Mousse and TRESemme Fresh Start.
- Mona is up on her Wizard of Oz references, as she tells Lucas in The Perfect Storm to ask the wizard to make him a man. "A" is up on their Wizard of Oz references too, custom designing a fortune cookie that reads There's No Place Like Homecoming. (Dorothy's words at the end of the film: There's No Place Like Home.") Also, in Can You Hear Me Now?, "A" sends a flier towards the Pretty Little Liars that reads, "Ding Dong, the Bitch is Dead," a reprisal of the film's song "Ding Dong, the Witch is Dead."
- Janel Parrish revealed in an interview that she did not know she was "A" until a week before they started filming for the finale, but she was always hoping that she was "A."
- Mona is released from Radley in She's Better Now which implies what the title meant.
- Mona's favorite Holiday is Halloween, she likes it better than Christmas because it involves more makeup.
- Mona got kicked off the A team at the end of the Season 3 finale and is now considered to be part of the liars starting in Season 4.
- "A" puts a doll of Mona with the liars in the doll house in A is for A-L-I-V-E.
- Mona is one of the two female characters with history of mental illnesses. The other one is Meredith Sorenson.
- In EscApe From New York, Mona has formed a group (including Lucas Gottesman and possibly Melissa Hastings and Paige McCullers) of people who have been mistreated by Alison in the past. It is known as "Mona's Army".
- Main article: Mona Vanderwaal (Book Character)
- In the show, Mona has dark hair and brown eyes. In the books, she has blonde hair and blue eyes.
- Mona, in the books, witnessed The Jenna Thing and received burns from the accident. While in the show, only Toby saw what The Liars did.
- In the books, Jenna and Mona were friends, but in the series they hardly knew each other.
- In the TV series, Spencer is the first to find out that Mona is A. In the books, it was Hanna.
- In the show, Mona dated Noel. In the books, she hooked up with Noel's brother Eric, before her death in Unbelievable.
- Mona dies after her reveal as "A" in the books. In the TV show, Mona survives the fall and is admitted to Radley Sanitarium and becomes an ally to the liars after the events of A DAngerous GAme.
- In the books, Mona becomes "A" as revenge for the Liars taking part in the blinding of Jenna Cavanaugh. In the TV show, Mona starts being A and also created the "A-Team" because she feels that the Liars (possibly including Alison, as she received notes from "A" as well) "took" Hanna away from her.
- In the books, Mona is the first A, and seems to have no accomplice. In the show, Mona started the A-Team, and while she was in Radley, Red Coat took over the leadership.
- Mona dated Lucas before Ali disappeared in the books. This never happened in the show.
- In the books Mona was much more reckless, getting wasted, helping Hanna crash Sean's car, and showing her underwear to guys for fun.
- In the books, Mona's friendship with Hanna was just a ploy to get information, whereas in the show, they had a real friendship with Mona seemingly atoning for being A.
- In the show Mona and Mike date for a short period of time, however in the books they barely interact.
- In the book, Mona is killed when she accidentally falls of a cliff after a fight with Spencer at the quarry whereas in the TV show, Mona is murdered in her own home.
Mona [to Hanna]: This sounds totally gay, but if I saw you struttin' it in that dress and kickin' up those heels, I would think about doing you.
Hanna: We had so much fun last summer.
Mona: And some of it was even legal.
Mona [to Lucas]: You can go now. This beauty doesn't need a beast.
Mona: I was eating three almonds a day, and you were getting liposuction?
Mona [to Hanna]: I'm making sure you don't host a pity party for yourself and invite a cheese cake.
Mona [about her birthday gifts]: Whatever it is, I'm sure I'll love it. And if not, I'll return it.
Emily: I can't blackmail a school official.
Mona: Honey, you can't be a shark if you're toothless.
Mona: People are toads.
Mona: Frankly, I'd like to take that cane and whack her like a pinata.
Mona [to Spencer]: You bitches underestimated me.
Mona: It's easier to forgive an enemy, than it is to forgive a friend.
Mona [to Spencer]: I admire you Spencer, so I'm going to let you choose how this ends tonight. You can join the 'A-Team' or disappear.
Mona [to Aria and Hanna]: Miss Aria, you're a killer, not Ezra's wife.
Mona [to Emily, Spencer and Aria]: Look, I'll take heels over a hoodie any day of the week. But just because I'm not A anymore, doesn't mean I can't recon your asses when I need to.
Mona: And who's looking cray-cray now, Spencer?
Mona: Looks like someone's been skipping their anger management class.
Hanna: You were on the Halloween train dressed like Caleb.
Mona: To think we were this close to our first kiss.
Mona [to Alison]: I don't have to hide, you do. And you're gonna wish you stayed dead.
Mona [to Aria]: Alison is "A"! And now I can prove it.
Mona: Game over Alison. I win.