Equipped with their new information about Mona, the Liars decide they need to speak to Alison. But once the truth is out there, Aria quickly learns that Mike's involvement with Mona and this new revelation could have serious repercussions for her family. Determined to keep Mike safe and get Ali out of jail, the Liars intensify their search for information on "A." Meanwhile, Spencer heads to London for an important college interview, and Alison looks to someone surprising for help with her murder trial.
Elenco: Troian Bellisario , Ashley Benson , Lucy Hale , Ian Harding , Laura Leighton , Shay Mitchell , Ian Harding , Ian Harding , Keegan Allen , Bianca Lawson , Brant Daugherty , Brendan Robinson , Chad Lowe , Claire Holt , Cody Christian , Eric Steinberg , Holly Marie Combs , Janel Parrish , Julian Morris , Laura Leighton , Lesley Fera , Lindsey Shaw , Nia Peeples , Nolan North , Roark Critchlow , Ryan Merriman , Sasha Pieterse , Tammin Sursok , Torrey DeVitto , Yani Gellman .