As Garrett's trial begins in Rosewood, the Little Liars are at complete odds with each other. Emily is furious with Hanna, Aria and Spencer for trying to insinuate that "A" could be Paige. She doesn't want to hear any of their warnings and refuses to believe it. In an attempt to get away from everything, she agrees to go out of town with Nate.
Elsewhere, Mona (disguised as a nurse) walks out of Radley with no problems! Aria is shocked when Maggie arrives at Ezra's apartment. But she's even more stunned when Maggie doesn't let on that she's met Aria before. And Toby returns to Rosewood; he and Spencer have sex for the first time.
Meanwhile, the girls are intent on protecting Ems and proving that "A" is Paige. When they receive a message from "A" to meet them at Ali's grave, they decide to expose her once and for all with a little help from Caleb. But when no one shows up at the cemetery, they quickly realize something doesn't seem right. They split up and head to try and find Emily.
At the Lighthouse Inn (where Nate and Emily went), Emily discovers that Nate's been lying -- big time! He isn't Maya's cousin at all. And his name isn't Nate. He's actually Lyndon James, Maya's stalker from True North...and he killed Maya! The situation goes from bad to worse when he reveals he is holding Paige captive and wants to cause Emily the same pain she caused him. Emily manages to briefly escape, but Nate tracks her down. He attacks her, and in self defense, Emily manages to get a hold of Nate's knife and she stabs him. Caleb arrives moments later and comforts Emily -- but he's then shot! Hanna, Aria and Spencer arrive on the scene to learn that Nate is dead and Caleb's been critically wounded. Hanna is, of course, distraught as Caleb is rushed away to the hospital for emergency surgery.
At the end of the episode, Veronica tells the Liars that because of everything that happened, Garrett is now a free man. The girls receive a call from "A," who is very pleased with the night's events. And elsewhere, as Mona sneaks back into Radley, another member of the "A" Team is revealed: It's TOBY!