Pretty Little Liars is an American mystery-thriller teen drama television series created by I. Marlene King. Based on the popular series of novels written by Sara Shepard, the show premiered on June 8, 2010 on ABC Family. The series follows the lives of Aria Montgomery (Lucy Hale), Spencer Hastings (Troian Bellisario), Hanna Marin (Ashley Benson) and Emily Fields (Shay Mitchell), four girls whose clique falls apart after the disappearance of their queen bee, Alison DiLaurentis (Sasha Pieterse). One year later, they begin receiving messages from a mysterious figure using the name "A" who threatens to expose their secrets. At first they think it's Alison herself, but after she is found dead, the girls realize that someone else knows their secrets, — including long-hidden ones they thought only Alison knew.
After an initial order of 10 episodes, on June 28, 2010, ABC Family ordered an additional 12 episodes for season one. These episodes began airing on January 3 and ended on March 21, 2011. The ratings success of the first 10 episodes prompted the book series to be extended beyond the initial eight novels. On January 10, 2011, ABC Family renewed the series for a second season. The second season premiered on June 14, 2011, and after an initial order of 24 episodes, an additional Halloween episode was added as a part of the network's 13 Nights of Halloween lineup bringing the season 2 episode order to 25 episodes. On November 29, 2011, ABC Family renewed the series for a third season, consisting of 24 episodes. On October 4, 2012, ABC Family renewed the show yet again for a fourth season consisting of 24 episodes. On March 26, 2013, ABC Family renewed the series again for a fifth season consisting of 25 episodes. On June 10, 2014, they renewed Pretty Little Liars for both a sixth and seventh season, making the show ABC Family's longest running original hit series.
As of June 12th, 2016, 144 episodes of Pretty Little Liars have aired.
|Season 1||June 8, 2010 - March 21, 2011|
|Rosewood is a perfect little town with a great many secrets, the ugliest of which belong to the four prettiest girls in town: Aria, Spencer, Hanna and Emily, friends whose darkest secrets are about to unravel. One year ago, Alison, the Queen Bee of the group, disappeared, and the girls stopped being each other's BFFs. Now they start getting messages from "A" saying things only Alison would know. "A" spills their secrets, watches their every move and makes some very scary threats. The girls reunite to discover what's going on: Is Alison back? Or is "A" someone else altogether?|
|Season 2||June 14, 2011 - March 19, 2012|
|All of Rosewood wants to know who killed Alison--and the names Aria, Emily, Hanna and Spencer are on everyone's lips. Forced to move their friendship underground and to meet with a therapist, the girls feel utterly alone. Is no place safe from the watchful eye of "A"? With parental and romantic relationships on the rocks, the four friends consider revealing their secret, further straining their bond. But as the mystery deepens, the body count increases, and the texts from "A" grow ever more menacing, the girls need each other more than ever.|
|Season 3||June 5, 2012 - March 19, 2013|
|A long summer vacation appears to be just what Aria, Emily, Hanna and Spencer needed to heal from the traumatic year that included Maya's murder and learning Mona was "A". Things may seem "normal", but the four girls are hardly over what happened. As school starts and the second anniversary of Alison's death approaches, what begins as an attempt to leave the past behind ends with a shocking new nightmare. With the unearthing of family secrets and shifting alliances among the girls' intimate relationships, sinister new mysteries unfold... mysteries that the girls are desperate to solve in order to clear their names and find out the truth behind Alison's last days--and to stay alive.|
|Season 4||June 11, 2013 - March 18, 2014|
|In the aftermath of Season Three's mysterious lodge fire, Aria, Emily, Hanna and Spencer turn to a surprising new ally to help them discover what happened that night, all while trying to uncloak Red Coat. But when a new corpse appears in Rosewood, the girls are drawn into yet another murder investigation, one that puts a cloud of suspicion around them and their friends and family. With "A" lurking in the shadows and feeling that Alison is closer than ever, the Liars grow bolder in their detective work--and in the stories they tell to cover up their secrets!|
|Season 5||June 10, 2014 - March 24, 2015|
|Season Five finds the Liars in the moments following the shocking acts and revelations of the epic Season Four finale. While Aria, Emily, Hanna and Spencer are relieved that both Alison and Ezra are alive and safely back home, the discovery of two new corpses brings more questions to the surface--plus terrifying threats from "A." Is Alison really "A"? Or is "A" pretending to be Alison? With a surprising confession that tears the five friends apart, the game is far from over. In fact, a new one is just beginning... one where surviving senior year might be the PLL's toughest challenge yet!|
|Season 6||June 2, 2015 - March 15, 2016|
|Season Six begins moments after the Season Five finale, with Aria, Emily, Hanna, Spencer and Mona trapped outside the "dollhouse"--where their tormentor, Charles, has been keeping them--with nowhere to run. As the girls struggle to survive, Ezra, Caleb and Toby continue the fight to find the girls with or without Rosewood Police Department's help. Charles' story begins to come together, and the Liars eventually solve the puzzle, finally putting an end to the "A" game. But that's not the end of the mystery! The season's second half leaps five years forward with new secrets, new lies and a whole new look.|
|Season 7||June 21, 2016 - March, 2017|
|In the seventh and most romantic season of hit drama series Pretty Little Liars, the PLLs band together to unearth answers to the last remaining secrets and take down "Uber A" for good. Andrea Parker joins the cast as a series regular this season, as Mary Drake, the identical twin of Alison’s mother, Mrs. DiLaurentis.|