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?
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.
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.
The liars finally come face-to-face with their tormentor; Rosewood's Junior League Masquerade Gala is the perfect setting for "A's" next game of cat and mouse with their favorite targets, but will this game be "A's" last?
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..