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22 Episodes 2010 - 2011
Episode 1
Tue, Jun 8, 201045 mins
Artsy and eclectic Aria has just returned to town after spending a year overseas and, while she tries to deny feeling hurt over her father Byron's indiscretion with one of his ex-students at the college, and keep her mom, Ella, from finding out, she can't ignore the intense chemistry with Ezra Fitz - Aria's English teacher. Once-chubby Hanna has transformed herself into the current "It girl," but still battles the urge to binge. Shoplifting gives her a less-fattening thrill, but when she gets caught, the charges are dismissed only because her mother, Ashley, takes matters into her own hands, eager to keep her own reputation and the image of her daughter untarnished. Spencer is a perfectionist and straight-A student whose pressure to stand out in her overachieving family leaves her feeling alone ... until she finds understanding in the unlikeliest of places - the arms of her sister's fiancé. Emily, an athlete trying to sort out her place in the world, finds herself drawn to her new neighbor, Maya, a free spirit who recently moved into Alison's old house across the street. When each girl receives a message referencing these most private details that barely scratch the surface of what they are desperate to keep hidden, living in their picturesque suburban community suddenly seems far from perfect as secrets, lies and betrayals threaten everything they hold dear. Even after Alison's body is discovered, the messages don't stop...

Episode 2
Tue, Jun 15, 201042 mins
The circumstances surrounding Alison's disappearance continue to haunt Aria, Emily, Spencer and Hanna, as questions arise about the night she went missing. To complicate matters, Jenna's return to Rosewood makes the girls face an unpleasant past and an incident that sealed their friendship forever. Can the girls face what has taken place in their past, especially since "A" won't let them forget? Meanwhile temptation is everywhere they look, as Aria tries her hardest to stay away from Ezra and Spencer won't shy away from her sister's fiancé, Wren.

Episode 3
Tue, Jun 22, 201045 mins
Aria has an unsettling encounter with Meredith; Emily is forced to see Toby in a new light; Spencer is reeling in the wake of a vengeful Melissa.

Episode 4
Tue, Jun 29, 201044 mins
The liars take matters into their own hands and try to put a stop to "A" by blocking all unknown users, but their problems are far from over.

Episode 5
Tue, Jul 6, 201045 mins
Trying to ignore "A" backfired for the liars and now they must pay the penalty as they deal with typical teenage drama - the boy kind.

Episode 6
Tue, Jul 13, 201045 mins
The homecoming dance is supposed to be a time for fun and making memories, but for the liars, disturbing secrets threaten to ruin their perfect night.

Episode 7
Tue, Jul 20, 201044 mins
After the homecoming dance, the liars try to sort out the devastation; "A" isn't the only one sending Aria texts as tensions rise in the Montgomery household..

Episode 8
Tue, Jul 27, 201044 mins
Last-minute preparations for Alison's memorial get derailed when her brother, Jason DiLaurentis arrives back in Rosewood, and saying goodbye is at the bottom of his list.

Episode 9
Tue, Aug 3, 201045 mins
The liars are trapped at school as a bad storm brews, and tensions run high; Byron leans on Ashley for advice on parenting as his relationship with Ella takes a bad turn.

Episode 10
Tue, Aug 10, 201060 mins
The liars go glamping for Mona's birthday as A's threats escalate and the FBI arrives in Rosewood. But not even a mani-pedi can lift the girls' spirits when the evening takes a dangerous turn.

Episode 11
Mon, Jan 3, 201160 mins
Moments after Hanna is hit by a car, the girls' world is turned upside down. "A" is no longer content playing a game of cat and mouse; With Hanna in the hospital and armed with the information of who "A" is, the girls are backtracking to figure out how they got to this point.

Episode 12
Mon, Jan 10, 201160 mins
Hanna's return home from the hospital and is stuck in a wheelchair and feels haunted by "A"; Spencer is still reeling from Melissa's surprise; Emily is hoping that an introduction to Maya during a tense family meal will smooth all apprehensions her parents may have; Aria and Fitz suspect a student is on to them.

Episode 13
Mon, Jan 17, 201160 mins
As Noel steps up his pursuit of Ezra, him and Aria start to feel like there may be no way out; Pam's perceived tolerance of Maya comes to a screeching halt; Spencer must handle the return of happy newlyweds Melissa and Ian; "A" has Hanna jumping through old habit hoops with regard to the stolen money.

Episode 14
Mon, Jan 24, 201160 mins
As the school gets ready for the dance-a-thon, the girls have more on their minds; Hanna is having a hard time finding a job to help her family's financial situation, but when "A" has a job for her, will Hanna be able to refuse? Emily can only think of Maya and is desperate to speak to her; Spencer finds being in close quarters with Ian, more difficult than ever; Aria's former babysitter, Simone, comes back to town for a surprise visit, and soon sets her sights on Ezra.

Episode 15
Mon, Jan 31, 201160 mins
Emily must deal with a jealous teammate who is threatened by Emily's return to the pool; Aria and Ezra plan their first date out in the open; Hanna is still stuck playing "A's" game; Spencer turns to Jason for information about the night they believe Alison died, only to have to face part of her unpleasant past with Ali.

Episode 16
Mon, Feb 7, 201160 mins
Emily and Paige go for round two, as they are pitted against each other to compete for the anchor leg of the big race; Caleb calls in his favor with a guilty Hanna as she tries to deter Aria from asking too many questions about Ella's ticket to the museum opening; Spencer takes on the task of tutoring a fellow student to try and get some answers.

Episode 17
Mon, Feb 14, 201160 mins
It's parent-teacher conferences and one little liar's father sits face to face with the love of her life. Better believe that "A" has something to say about it.

Episode 18
Mon, Feb 21, 201160 mins
As tensions rise, the girls ponder the true nature of evil; Aria views the school play as an opportunity to get closer to Ezra, but will her plan backfire?

Episode 19
Mon, Feb 28, 201160 mins
After a shocking revelation from the police, it looks like the liars could be crying wolf. With everything pointing to Ian, could the girls be wrong?

Episode 20
Mon, Mar 7, 201160 mins
As the heat is turned up on suspicions surrounding Spencer, the liars must come to the harsh realization that they aren't the only ones hiding secrets in Rosewood.

Episode 21
Mon, Mar 14, 201160 mins
Everyone has something to hide, but having to live with those secrets can become a big burden for the liars; Spencer and Toby aren't able to be seen together; Rosewood police officer Garrett keeps his promise to keep a close eye on the girls - much closer than they realize.

Episode 22
Mon, Mar 21, 201145 mins
In the season one finale, the girls go to an unlikely source for help to put an end to "A" and the mystery surrounding their friend. Can they really stop "A" once and for all?
