A month has passed since the liars were arrested and they're at each others' throats and Emily has been iced out completely. But what could have divided them so severely, has "A" finally won the game of divide and conquer?
With Lucas missing and questions surrounding what happened out on the lake, Hanna can barely catch her breath; Spencer follows a lead about "A" which guides her to an unexpected place and revelation.
Toby continues to pursue Spencer, knowing that she is keeping something from him; Hanna begs the other girls to stop using Caleb to help with their search; Aria is desperate to save her relationship with Ezra.
Aria continues to question Holden on what exactly he is up to during their "date nights"; Hanna tries to figure out the latest situation with Kate; Emily gets help from an unlikely source to get back on the Rosewood swim team.
Hanna's worst nightmare comes to fruition when Caleb becomes a target of "A" and his computer is in possession of the cops; Aria learns what Holden's been keeping a secret.
A surprising new victim of "A" is revealed; Spencer runs from her family troubles right into Wren's arms; Ezra's new opportunity could push him away from Aria.
With fathers looking to make amends and daughters trying to keep the peace, Rosewood's annual Father-Daughter Dance looks to be anything but fun; Ashley continues her hunt to find answers about what is going on with Hanna with help from a surprising source.
The liars are on the quest for answers of what Alison knew before she died; Jason drops off a bag of Alison's personal items that could be more than just a bag of junk; Toby's return to Rosewood brings a surprise reunion that ends dangerously.
One of Aria's past indiscretions is fodder for a new "A." A still-shaky Emily tries to focus on school, but could be derailed when she remembers a crucial piece from "that night."
A new clue could lead the girls down the wrong path. Emily gets another flashback from "that night," leading to a surprising suspect, and Aria questions Ezra's new influx of cash.
With new key evidence in Alison's murder case, Hanna fears that "A" may be framing her after a visit from Det. Wilden; Aria decides that she has to turn to Mona for answers; Someone from Ali and Jason's past arrives in Rosewood..
Trying to explain the drugged flask to Paige leads Emily to more insights about "that night"; Spencer asks Caleb for help; Aria learns about Ezra's past.
Spencer learns about Paige's shocking past with Ali, but will Emily listen to what her friends have to say?; Aria feels she has to help Ezra move on from his past.