Pretty Little Liars is an American mystery-thriller teen drama television series created by 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. Also in March 26, 2013 they renewed Pretty Little Liars again for a fifth season.
As of February 11, 90 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|
|After telling the police about Ian’s death and then the cops finding no body, the girls are now seen as liars by the town. With their parents concerned for their daughters, the girls are now forced to seek counseling from a therapist. But will the girls be able to entrust everything in her? Who is "A"?|
|Season 3||June 5, 2012 - March 19, 2013|
|It takes place 6 months after the discovery that Mona Vanderwaal is the elusive "A" that has been tormenting four teenage girls, Aria Montgomery, Spencer Hastings, Hanna Marin, and Emily Fields. It will also address the issue of whether or not Garrett Reynolds actually killed or was involved in the murder of the girls' former best friend and queen bee, Alison DiLaurentis, and how Mona achieved her role as "A."|
|Season 4||June 11, 2013 - March 18, 2014|
|This is the Season of Answers! Now that the girls were saved by who they thought was Alison, operation: World War A has begun! Join Aria, Emily, Hanna, and Spencer as they discover more and more about the summer Alison went missing, leading to a surprise A reveal and a surprise visit from the dead. Now that the fight is on, the secrets are bigger, the lies are more dangerous, and girls are more glamourous than ever!|
|Season 5||June 2014 - March 2015|
|As of now the plot is unknown.|