Duration: 44m

TV-14 8.4 Drama / Mystery / Thriller / Romance

Pretty Little Liars S1E22

In the season finale, the girls seek help to stop "A" and unravel the mystery of Alison.

Release Date: March 21, 2011 (USA)

Creator: I. Marlene King

Cast: Lucy Hale, Troian Bellisario, Ashley Benson, Shay Mitchell, Sasha Pieterse, Ian Harding, Laura Leighton, Janel Parrish, Tyler Blackburn