On the eve of the Rosewood Charity Fashion Show, the liars are surprised with Jessica DiLaurentis' return to town and her request that they participate in the show on Alison's behalf; Spencer quickly learns that Mona has stepped in and taken charge of running the event.

The PLLs work with Mona to try and get some clarity on A.

The presence of Mrs. DiLaurentis continues to unnerve all those around her; Toby shares a heartbreaking secret with Spencer; "A" nearly kills Mona.

Mrs. DiLaurentis offers to let Emily move into Ali's old room; Trying to get involved in Jake's interests; Aria finds an opportunity to follow a lead.

Now it's confirmed that Alison is alive, who was buried in Ali's coffin?

After Hanna reveals that she has Ali's diary, the liars hope it can answer some questions, but are they ready to admit which personal story is about them?

Spencer's hunt for the truth takes a dangerous turn. Will Hanna be able to figure out Spencer's secret?; Emily looks to make amends with Alison through Shana.

Emily, Hanna and Spencer are concerned for Aria as they watch their friend crumble after learning shocking news about Ezra. Not knowing what is true or who to trust, Aria goes looking for answers, not wanting to believe this revelation to be true. Spencer is concerned for Aria, but she is not doing so well herself. Trying to prove to her parents and Toby that she can kick the habit on her own, Spencer has to be careful because one misstep could send her to rehab. Can Spencer really rein it in, or will her constant curiosity and drive be her undoing? Meanwhile, Paige has had enough with Emily's secrets and is determined to stop it.

Emily takes up the sleuthing reins and hunts for answers about Ezra and Mona; Hanna begins a new search after being confronted by Holbrook and Tanner; Spencer and Aria lean on new men in their lives to recover.

It is a rough time for all of the Liars as Spencer is reeling about the memories from her "lost summer," Aria is still nursing a broken heart, Emily is reeling from Paige's betrayal and Hanna unsuccessfully attempts to wade back into the dating pool. But as each girl tries to deal with her individual issues, they must focus their attention on their suspicions surrounding Mrs. DiLaurentis. Assuming that Mrs. D knows more about Ali and the night she went missing, girls decide to help out at her charity bridal fashion show to gain access to the DiLaurentis house to search for answers. Meanwhile, Ella and Jason return to Rosewood, each with something to hide.

The liars finally get answers about the night Ali disappeared. With their newfound knowledge of Ali's long-held secrets, can they figure out who "A" is?

The liars try to wrap their head around the new normal; Jason's odd behavior and Kenneth's search for Jessica starts to raise eyebrows.

It is Christmas time and all of the liars are planning on having a great time at the Ice ball, but 'A' has other plans.

'A' has always had fun playing with the liars, but now they have the biggest game to date in store for the girls.

The liars are trapped outside of Charles' dollhouse, where his games grow more sinister; Ezra, Caleb and Toby are determined to locate the liars.

Kenneth DiLaurentis comes clean about the family's connection to Charles and all roads lead to Radley.

Charles declares he is coming home for his birthday; Mona is shutting Mike out; Hanna gets an unwelcomed surprise.

After years of torment, the liars will finally come face to face with their tormenter, and uncover the puppeteer behind the hoodie.

Alison is faced with a sudden jeopardy; Hanna and Caleb develop a plan to come face-to-face with their tormentor; Emily and Spencer investigate Mona; Aria and Ezra continue with the book.

The stalker threatens to kill the liars if they don't divulge Charlotte's killer by the election; Alison experiences strange visions and starts to question her sanity.

The liars rush to save Hanna after she's abducted by Über A, and the only way is to turn over evidence that will reveal who really murdered Charlotte DiLaurentis.

Worried that Ali is being tortured by Uber A, the liars turn to a potential enemy for help.

To save Ali from Über A's threats, the liars snap into action to rescue her, but a deadly mistake is made which changes everything.

The liars made a mistake and now they're trying to hide it, but their romantic relationships will bear the brunt of their actions.

Ali is released into the care of Mary Drake; Spencer and Hanna search for a missing Caleb; Aria and Emily stumble upon a secret apartment.

Hanna wonders if she should reveal the truth to the police; Ali learns her friends turned her in to Uber A; Someone is killed for being on the wrong team.

Jason returns and goes all-out in order to get rid of Mary; The liars learn something new about Mary and Jessica; Ezra gets a call about someone in his past.

Emily and Paige apply for the same job; Hannah is visited by Mrs. Grunwald; Ali returns to work; Spencer and Aria pursue answers from the doctor who delivered Mary's baby.

Hanna goes rogue to prove that Noel is Über A; Emily unexpectedly turns to Paige for comfort; Jason and Aria look into Mary's past.

The liars face off with their enemies in a chaotic fight that ends fatally; One liar learns a secret about her past; Another discovers something about her future.

With more secrets being uncovered, the liars all have something to deal with; A.D sets a game for the liars.

Emily butts heads with teenager Addison; Spencer confronts her mother; Aria confides in Holden; Jenna stirs up trouble when she returns.

Aria and Emily team up to investigate Sydney; Spencer grows closer to Detective Furey; Hanna's turn at the game is more intense than she bargained for.

Ali's turn at the game forces her to face a monumental personal decision; Hanna and Spencer run into a familiar face with a shocking secret.

After being blackmailed by A.D, one of the liars begins to pass to the dark side to protect those closest to her.

With the Rosewood P.D closing in, the liars try to destroy any evidence that would incriminate one of their own.

Emily teams up with Mona; Ashley returns after learning frightening information; Spencer's family reels from A.D's latest taunt.

The Rosewood PD turn up the heat on the liars; A.D. presents the liars with a choice designed to drive a wedge between them; Aria makes a horrifying discovery.

The Liars gear up for a confrontation with A.D.; Spencer, Hanna and Caleb discover new information regarding Charlotte's death.

Secrets come tumbling out as the ultimate endgame comes to light and A.D. is revealed.