After being blackmailed by A.D, one of the liars begins to pass to the dark side to protect those closest to her.

Cast: Troian Bellisario, Ashley Benson, Tyler Blackburn, Lucy Hale, Ian Harding, Shay Mitchell, Andrea Parker, Janel Parrish, Sasha Pieterse, David Bianchi, Johnny Glasser, Nicholas Gonzalez, Julian Morris, Brendan Robinson, Lindsey Shaw