When I'm asleep, I'm afraid someone else might take my place. It can happen in a flash. One minute she's kissing her boyfriend, the next she's lost in the woods. Sixteen-year-old Ellie Cox is losing time. It started out small...forgetting a drive home or a conversation with a friend. But her blackouts are getting worse, more difficult to disguise as forgetfulness. When Ellie goes missing for three days, waking up in the apartment of a mysterious guy-a guy who is definitely not her boyfriend-her life starts to spiral out of control. Perched on the edge of insanity, with horrific memories of her childhood leaking in, Ellie struggles to put together the pieces of what she's lost-starting with the name haunting her, Gwen. Heartbreakingly beautiful and intimately drawn, this poignant story follows one girl's harrowing journey to finding out who she really is.