My perfect life was a lie. Now I'd do anything to uncover the truth. Not long ago, I had everything a girl could wish for: amazing friends, an adorable boyfriend, a loving family. But none of them know that I'm gone--that I'm dead. To solve my murder, my long-lost twin sister, Emma, has taken my place. She sleeps in my room, wears my clothes, and calls my parents Mom and Dad. And my killer is watching her every move. I remember little from my life, just flashes and flickers, so all I can do is follow along as Emma tries to solve the mystery of my disappearance. But the deeper she digs, the more suspects she uncovers. It turns out my friends and I played a lot of games--games that ruined people's lives. Anyone could want revenge . . . anyone could want me--and now Emma--dead. From Sara Shepard, the #1 New York Times bestselling author of the Pretty Little Liars books, comes a riveting series about secrets, lies, and killer consequences.

It's springtime in suburban Rosewood, which means iced soy lattes, fresh manicures in shimmering pastels—and prom. But while everyone else is flipping through the racks at Saks in search of the perfect dress, Hanna, Spencer, Emily, and Aria are on a different kind of hunt: They're looking for A. . . . Hanna puts her campaign for prom queen on the back burner to volunteer at the burn clinic, where one of A's victims is recovering. Emily digs into Ali's past at the mental hospital with some very crazy consequences. Spencer contacts a private eye to help her stalk her stalker. But when their sessions get a little too private, they may forget to keep their eyes on A. . . . And Aria's worried that A is even closer than she thought. When her dark secret from Iceland finally comes to light, she discovers that maybe, just maybe, the one person she's been trying to hide the truth from has known all along. The liars are finally taking the fight to A. But no matter what they do, A's always one step ahead, ready to crush the girls completely.

In picture-perfect Rosewood, Pennsylvania, ash-blond highlights gleam in the winter sun and frozen lakes sparkle like Swarovski crystals. But pictures often lie— and so do Rosewood's four prettiest girls. Hanna, Aria, Spencer, and Emily have been lying ever since they became friends with beautiful Alison DiLaurentis. Ali made them do terrible things—things they had to keep secret for years. And even though Ali was killed at the end of seventh grade, their bad-girl ways didn't die with her. Hanna's on a mission to corrupt Rosewood's youth, starting with a very attractive sophomore. Aria's snooping into her boyfriend's past. Spencer's stealing— from her family. And pure little Emily's abstaining from abstinence. The girls should be careful, though. They thought they were safe when Ali's killer was arrested and A's true identity was finally revealed. But now there's a new A in town turning up the heat. And this time Rosewood is going to burn.