In Rosewood, Pennsylvania, everyone has something to hide. High school juniors Spencer, Hanna, Aria, and Emily thought their darkest secrets vanished when their best friend, Alison, went missing three years ago. But now someone named "A" is sending them notes and threatening to reveal their ugliest secrets—things only Alison knew. Is "A" Alison? Or someone else? Only, who could hate them so much? These liars are about to discover that nothing is as it seems in Rosewood. No one is safe, and no one can be trusted. . . .

This page-turning start to the Pretty Little Liars series introduces readers to Rosewood and the pretty little liars who call it home.