Aria, Emily, Hanna and Spencer are sure that Mona is up to her old tricks again, but can they prove it? Meanwhile, Aria's fears about her father grow stronger.
Will their secrets drive the girls to take desperate actions that could make things worse? Plus, Emily learns more about what Ali may have been hiding the summer before her murder.
Alison's family is set to bury her again, now that they have her remains, but the girls are divided about going to yet another memorial; Emily visits Dr. Sullivan.
Holding new information about Detective Wilden, Aria, Emily and Hanna are on the hunt for answers about the detective's past; Spencer finds someone to lean on.
Spencer is now ready to talk, but Emily is not ready to accept what she has to say. Hanna helps her mother and keeps a new secret, and wonders if "A" had something to do with it.
"A" plays games with higher stakes. Aria considers things with Ezra and Hanna is thrown in the midst of Caleb's family drama. Spencer looks for answers about Mona's time in Radley.
In the third season finale, the girls attempt to put an end to the game. With so much happening and new information uncovered, will the girls be ready for what is waiting for them?
Spencer and Emily visit a nearby college, but they have different agendas for their time on campus. Hanna is frantic after another horrifying discovery among her mom's things.
Trying to protect her mom gets Hanna in trouble with the cops; Searching for the recipient of Ali's mysterious phone number leads Spencer and Toby to Ravenswood.
Caleb and Toby team up to investigate "A" and what happened the night of the lodge fire; Ezra struggles with how he fits into Aria's life; Hanna tries to act normal.
Caleb tries to convince Hanna that Mona can't be trusted, causing Mona to prove her loyalty in the most unexpected way; Emily reconnects with her old boss Zoe.
Paige throws Emily a surprise birthday party; Mona's selfless act provides Hanna and her mother with their first bit of good news; Ezra gets some distressing news.
Ezra reaches out to Aria, just as she decides to move on with Jake; A Western-themed dance turns into a two-step with "A"; Hanna is stalked by a fellow student.