The girls seek justice for Mona and grow determined to find evidence that will incriminate Alison, using any means necessary. Meanwhile, Paige and Emily reach a turning point in their relationship; and Aria becomes concerned about her future.

A search for Mona's laptop gets underway, and it may lead Spencer and Caleb to break Toby's rules. Meanwhile, Aria gets sidetracked when she's about to come clean to Ezra; and Hanna tries to keep her mom's secret when Pastor Ted returns.