Article Photos: “Pretty Little Liars”: “A” to be revealed in second season finale March 19 1/1

 PRETTY LITTLE LIARS - ABC Family's "Pretty Little Liars" stars Shay Mitchell as Emily Fields, Lucy Hale as Aria Montgomery, Ashley Benson as Hanna Marin and Troian Bellisario as Spencer Hastings. (ABC FAMILY/BOB D'AMICO)