Based on the Pretty Little Liars series of young adult novels by Sara Shepard, the series follows the lives of four girls — Spencer, Hanna, Aria, and Emily — whose clique falls apart after the disappearance of their queen bee, Alison. One year later, they begin receiving messages from someone using the name "A" who threatens to expose their secrets — including long-hidden ones they thought only Alison knew.
Writer: I. Marlene King
Air date: 2011-06-14
Runtime: 41 min
Overview: Disbelieved by police and families, the tormented quartet is sent for therapy. The chance to share at least some of their secrets proves appealing.
Writer: Joseph Dougherty
Air date: 2011-06-21
Runtime: 41 min
Overview: Emily gets a lifeline, Aria faces Mr Fitz’s farewell, Hanna confronts her father, and Spencer is troubled by Toby’s treatment, Melissa’s lies, plus Alison’s brother.
Writer: Oliver Goldstick
Air date: 2011-06-28
Runtime: 42 min
Overview: While having to stay apart, Hanna turns match-maker, Spencer exploits her sister’s loss, Emily forges a letter, and Aria is upset in pottery.
Writer: Charles Grant Craig
Air date: 2011-07-05
Runtime: 41 min
Overview: Hanna helping Lucas requires Caleb’s aid, while tailing Melissa has an unexpected outcome.
Writer: Maya Goldsmith
Air date: 2011-07-12
Runtime: 41 min
Overview: A shocking discovery finally lays to rest the killer’s identity – until Emily unravels clues that reveal otherwise.
Writer: Bryan M. Holdman
Air date: 2011-07-19
Runtime: 42 min
Overview: Distracted from the charity fashion show by parental and personal factors, the teen quartet is unprepared for the final display.
Writer: Joseph Dougherty
Air date: 2011-07-26
Runtime: 42 min
Overview: Reaction to a dug-up item raises Spencer’s suspicions, an awkward dinner is disturbed at Aria’s, while Emily finds rooming with Hanna a pain.
Writer: Matt Witten
Air date: 2011-08-02
Runtime: 42 min
Overview: Emily’s swimming prospects could be sunk, along with Hanna's hopes for the future, while Spencer and Aria make a gruesome discovery.
Writer: Jonell Lennon
Air date: 2011-08-09
Runtime: 42 min
Overview: Spencer is suspicious of what Jason is hiding in his outhouse, while Caleb learns who is after him.
Writer: Maya Goldsmith
Air date: 2011-08-16
Runtime: 42 min
Overview: Aria is warned to be wary of Jason, while over-eager Mona encourages Hanna to try bonding with Kate at a country club.
Writer: Oliver Goldstick
Air date: 2011-08-23
Runtime: 42 min
Overview: The harassed foursome face the fact they need outside help, though some problems stay strictly in the family.
Writer: I. Marlene King
Air date: 2011-08-30
Runtime: 42 min
Overview: In custody after a testing day, three of the girls count the cost of the tasks ‘A’ set them to save a life.
Writer: I. Marlene King
Air date: 2011-10-19
Runtime: 42 min
Overview: The Halloween before Alison vanished shows her controlling nature, and reveals other manipulative souls were also active.
Writer: Joseph Dougherty
Air date: 2012-01-02
Runtime: 42 min
Overview: The fractured foursome endure their legal punishment plus the pain of shunning loved ones. But changes are coming.
Writer: Oliver Goldstick
Air date: 2012-01-09
Runtime: 42 min
Overview: Hanna unwillingly allows Caleb’s involvement, while a crisis helpline call alerts Emily to a new suspect, and a birthday surprise goes badly.
Writer: Bryan M. Holdman
Air date: 2012-01-16
Runtime: 42 min
Overview: Hanna fears a vengeful visitor, Aria arranges to encounter Ezra, Spencer turns investigator, and Emily worries a renewed relationship is under threat.
Writer: Charles Grant Craig
Air date: 2012-01-23
Runtime: 41 min
Overview: To protect them, Caleb and Toby are misled by Hanna and Spencer, while Aria goes out with Holden, hoping to see Ezra.
Writer: Maya Goldsmith
Air date: 2012-01-30
Runtime: 42 min
Overview: Caleb’s tech skills are used against Hanna’s wishes.
Writer: Oliver Goldstick
Air date: 2012-02-06
Runtime: 42 min
Overview: Supervised school workshops to foster honesty result in far more disclosures and discoveries outside the classrooms than within.
Writer: Joseph Dougherty
Air date: 2012-02-13
Runtime: 42 min
Overview: Caleb’s laptop leads to trouble, Aria learns what Holden has held back, and a man who had information for Alison demands money.
Writer: Jonell Lennon
Air date: 2012-02-20
Runtime: 42 min
Overview: Mona is messaged by ‘A’ again, Ezra is tempted to leave, and Spencer wants answers from Melissa, but gets distracted.
Writer: Charles Grant Craig
Air date: 2012-02-27
Runtime: 41 min
Overview: Daughter and dad bonding is awkward, while Ashley hopes to help Hanna by involving Detective Wilden.
Writer: Joseph Dougherty
Air date: 2012-03-05
Runtime: 42 min
Overview: Jenna’s return brings conflict, Aria agrees to a risky meeting, while a bag of Alison’s possessions seems like old news.
Writer: Oliver Goldstick
Air date: 2012-03-12
Runtime: 42 min
Overview: A creepy ‘hospital’ visited by Alison holds a sinister surprise, while Caleb goes along with a sting unwillingly.
Writer: I. Marlene King
Air date: 2012-03-19
Runtime: 42 min
Overview: An uncomfortable close encounter with their nemesis awaits at least one of the tormented quartet, and a death is promised.
