Crushed (Pretty Little Liars 13) In the thirteenth Pretty Little Liars novel, the secrets are ti for the perfect prom dress, Hanna, Spencer, Emily, and Aria are on a different kind of hunt: They&39;re looking for A Hanna puts her can for prom queen on the back burner to volunteer at a burn clinic, where one of A&39;s victis into Ali&39;s past at the mental hospital with some very crazy consequences Spencer contacts an amateur private eye to help her stalk her stalker But when their sessions get a little too private, they et to keep their eyes on A And Aria&39;s worried that A is even closer than she thought When her dark secret froht, she discovers thatto hide the truth fro The liars are finally taking the fight to A But no matter what they do, A&39;s always one step ahead, ready to crush the girls completely