The circumstances surrounding Alison's disappearance continue to haunt Aria, Emily, Spencer and Hanna, as questions arise about the night she went missing. To complicate matters, Jenna's return to Rosewood makes the girls face an unpleasant past and an incident that sealed their friendship forever. Can the girls face what has taken place in their past, especially since "A" won't let them forget? Meanwhile temptation is everywhere they look, as Aria tries her hardest to stay away from Ezra and Spencer won't shy away from her sister's fiancé, Wren.
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 .