PRETTY LITTLE LIARS Episode 4.24 Photos A Is For Answers : PRETTY LITTLE LIARS – “A is for Answers” – Aria, Emily, Hanna and Spencer finally get all of the answers about what happened to Ali the night she disappeared in “A is for Answers,” the season finale of ABC Family’s hit original series “Pretty Little Liars,” airing Tuesday, March 18th (8:00 – 9:00 PM ET/PT). (ABC FAMILY/Eric McCandless) ASHLEY BENSON, SHAY MITCHELL, LUCY HALE, TROIAN BELLISARIO