At thirty-four, Internet entrepreneur Ryan Perry seemed to have the world in his pocket -- until the first troubling symptoms appeared out of nowhere. Within days, he's diagnosed with incurable cardiomyopathy and finds himself on the waiting list for a heart transplant. One year later, Ryan has never felt better. Then the unmarked gifts begin to appear: a box of Valentine candy hearts, a heart pendant. Most disturbing of all, a graphic heart surgery video and the chilling message: Your heart belongs to me. In a heartbeat, the medical miracle that gave Ryan a second chance at life is about to become a curse worse than death. For Ryan is being stalked by a mysterious woman who feels entitled to everything he has. She's the spitting image of the twenty-six-year-old donor of the heart beating steadily in Ryan's own chest. And she's come to take it back.