Shana says that Ali wants to meet Emily - and not the other girls - but could it all be part of an "A" plan?; Aria and Hanna deal with matters of the heart.

"A" goes after Hanna in an unexpected way; Spencer works overtime to decipher the stories in Ali's diary; Aria is upset with the new friend Mike has made.

Aria begins her volunteer work at Radley; Spencer borrows Ezra's spy equipment to keep a closer eye on the home front; Ali and Caleb butt heads.

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.

As Hanna's downward spiral continues, an unfortunate incident with Zack threatens to strain her friendship with Aria. Spencer and Emily dig deeper into Bethany's relationship with Mrs. Dilaurentis.

Spencer's numerous sleepless nights, with the help of prescription pills, take a toll on her as her hunt for Ali and much needed answers continues, teleporting her into the world of 1940s film noir.

Spencer confronts Caleb regarding Hanna's issues; Aria opens up to Ella and questions her marriage to Zack; Emily and Spencer close in on Noel's motives and a call from detective Tanner has Alison perplexed.

Spencer is determined that it is finally time to tell Aria about what she has found out about Ezra, but Emily and Hanna are worried about what it could do to her.

All eyes are on Alison as she struggles with her response to Cyrus' confession. Melissa hints at knowing the truth and warns Spencer to keep away from Ali. Aria mulls over Spencer's plan of letting everything out in the open with Tanner.

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.

Emily is on the hunt to find out the truth about Alison, seeking unlikely help from Ezra Fitz for information about Cyrus and Alison's connection. Meanwhile Melissa's secret is finally revealed, Hanna asks for Spencer's and Toby's help with Caleb and his drinking problem.

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 girls join forces with Mona to figure out why Ali reached out to the police. Alison's actions put Spencer in the cross-hairs of Bethany's murder investigation. Mona reveals the truth about Ali, resulting in an aching loss.

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?

A special Halloween themed fan special, for the first time in PLL history. The cast answer all of the fans questions, giving you hints about A and the rest of Rosewood.

The PLLs must dodge their dreaded nemesis, "A," while navigating a world with Alison back in it.

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.

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.