Sneak Peek! Pretty Little Liars: Crazy
Events in Rosewood take a turn for the worst when Mona (Janel Parrish) goes missing from the psychiatric ward. What will Aria ( Lucy Hale) and Hanna (Ashley Benson) do when they discover that their only connection to A is nowhere to be found? It's going to be one crazy episode.
Pretty Little Liars airs every Friday at 8 p.m. on ETC.