Hanna tells the rest of the girls about the code she and Mona had when they were younger and Alison was missing (taking the first letter of every word) "Where were we? Maya's away sleeping sweet; until Garrett's all rosy, count on me." translates into "www.massugar.com". When the girls visit the website, a picture of Maya shows up on the screen. Underneath, it asks "What's the magic word?"
"A" is in the Children's Ward. "A" pulls off the head of the porcelain doll that Mona was brushing earlier to reveal a voice recorder. Aria's and Hanna's voices pleading Mona to tell them who "A" is, and Mona's codes were recorded.
With new key evidence in Alison's murder case, Hanna fears that "A" may be framing her after a visit from Detective Wilden; Spencer covers for Jason after he gets drunk and has a car accident; Aria decides that she has to turn to Mona for answers; Someone from Ali and Jason's past arrives in Rosewood... #PLL #PrettyLittleLiars