S6, E18: After the stalker nearly killed Emily, the Liars begin to take the threats more seriously and attempt to keep their mouths shut to prevent any further harm. Caleb must deal with the collateral damage of taking the blame for the leak about Yvonne (recurring guest star Kara Royster); Spencer tries to comfort him and get him to tell the truth. Emily goes on a mission to track down the person who came after her. Aria and Ezra move forward with the novel. Meanwhile, Hanna avoids dealing with her personal life.