A sweet sixteen party is supposed to be among the most memorable events of a girl s life. But on the night of her party, Mercy Clare wakes up in the waiting room of a hospital with no memory of how she got there. To make matters worse, she s wearing something she would never be caught dead in: her best friend Lyla s clothes. Mercy s nightmare is just beginning. The doctor tells her, referring to her as Lyla, that Mercy is lying in the hospital bed waiting to die. A trip to the bathroom confirms Mercy s fears, as Lyla s face stares back at her and Lyla s curvy figure pokes through her tight clothes. But finding out what s really going on won t be easy. Because if Mercy wants her body back . . . it might just cost her Lyla s life."