Two women share one body. One wants love. The other wants blood. Samantha falls in love easily—too easily. Every time she does, Maria takes control. And the man she loves ends up dead. It's how it's always been. Until Dr. Luke Lawson . Luke has no idea the woman he's dating is fighting a war inside her own mind. He doesn't know that one half of her wants to protect him… and the other has already put him on her hit list. If Samantha wins, Maria will die—taking Samantha with her. If Maria wins, Luke dies—and they move on to the next doctor. But Luke is different. He might be the one person who can save Samantha from herself. If she can keep him alive long enough. Because loving him might cost her everything. And losing him means becoming a monster forever.