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 w...