After her father's mysterious death, seventeen-year-old Jodi Logan is forced to move back in with her mother and stepfamily. This in itself tears at Jodi. Her mother kicked her out two years earlier after discovering Jodi was romantically involved with her stepbrother, Jeremy. To make matters worse, there’s Jeremy himself. No matter how hard Jodi fights it, she’s still drawn to him.Adding to the suck-fest that is now her home life, lately Jodi has time lapses she can’t account for, waking places she doesn’t remember going. When she comes to one day and finds herself making out with a boy she's never met, Sawyer, Jodi learns she's been living a double life as a girl named Kenzie. But who is Kenzie? Jodi fears she's going crazy—maybe developing a split personality. But when she discovers the truth, it's even worse. Jodi is possessed by a ghost—a stranger inside her that refuses to leave. When a girl from school is murdered Jodi doesn’t know who she can trust: her new friends? Sawyer? Jeremy? Or the stranger inside?