Pretty Little Liars (2010)

S7E5 Along Comes Mary

Jenna comes back to Rosewood and strikes up a friendship with yet another adversary of the Liars, putting her at the top of their list of suspects for Uber A. Meanwhile, Ali needs to find a relative to take her in before she can be released from the psychiatric hospital, which puts her in the care of the enigmatic Mary Drake. Spencer asks Hanna to assist her in locating Caleb, who has gone missing. Elsewhere, Aria and Emily discover a hidden apartment that they believe might hold vital clues.