Wicked

Wicked is the fifth book in the series Pretty Little Liars by Sara Shepard, which was published on November 25th, 2008 by HarperTeen.

A new "A" begins making threats. Ian denies Ali's murder, Emily gets a new boyfriend named Isaac but still has feelings for Maya; Hanna has trouble with her stepsister Kate; Aria meets a man who soon becomes her mother's boyfriend; Spencer comes to believe that she is adopted. At the end of the book, the four girls find Ian dead in the woods behind the Hastings' house.