"Never Trust A Pretty Girl With An Ugly Secret." According to Shepard, that is the moral learned at the end of this book. The 4 girls involved in the story; Aria, Emily, Spencer, and Hanna all have their own secrets that they have kept from each other and the only one that knows their secrets is Allison. Most of the Rosewood students consider her the leader of their group. And after Allison goes missing the group splits up; there is nothing to keep them together anymore and no way can she tell others their personal secrets. At least that's what they think, until 3 years after Allison goes missing. Little things from their past begin to appear, and it’s got all the girls spooked. The girls begin to receive messages and threats from some mysterious person that signs her messages as "A." Who could "A" be? Allison? What worries the girls the most is their biggest secret that they all share. The Jenna thing. "A" knows all their dirty secrets, and has come to Rosewood to tell it all.
