Pretty Little Liars 7×05 “Along Comes Mary” Sneak Peek – A mutual enemy draws two of the Liars’ adversaries together to stir up trouble in “Along Comes Mary,” an all-new episode of Freeform’s hit original series “Pretty Little Liars,” airing Tuesday, July 19th. Jenna returns to Rosewood and befriends another one of the Liars’ enemies, making her the PLL’s number one suspect for Uber A. In order to leave the psychiatric hospital, Ali must be released into the care of a relative, leaving her under the suspicious watch of Mary Drake. Spencer enlists Hanna’s help to search for Caleb as he’s missing in action. Aria and Emily stumble upon a secret apartment they hope will lead them to more answers.