Suspecting that Alison/"A" is out to frame her for Mona's murder, Hanna is not willing to just sit by and let it happen. When Caleb and her friends try to come up with a safe plan to get Hanna off the hook, it isn't good enough for her. Taking her fate into her own hands, Hanna strikes out alone to clear her name.
Meanwhile, relationships are tested when Aria comes clean to Ezra and Spencer's shady actions continue to put Toby in a bind at work.
Secrets are hard to keep, especially when you are keeping them from a loved one. Spencer searches for Mona's missing laptop with Caleb's help but where the search leads them could cross the "Toby approved" line. Aria tries to get up the courage to come clean to Ezra about her lie when she gets diverted by a possible goose chase. And Hanna is stuck in the middle having to cover Ashley's secret when Pastor Ted returns with big news.
Meanwhile, Emily struggles to come to terms with the end of her relationship with Paige.
Toby's new position in the Rosewood police department was to give the PLLs an upper hand on finally closing the door to Ali/A's game. But when a surprising bit of evidence show's up, Toby is put in a difficult position with his job and with Spencer. Not one to trust the police or evidence "surprisingly" showing up, Spencer tries to convince Toby to stray from his moral gut reaction, which puts stress on their relationship.
Meanwhile, Emily and Aria take drastic measures to keep control of situations that are out of their hands and that could affect their future.
Say hello to America's prettiest little liar.