The last time ranch owner Lacey Hampton saw her fiancé, Bryan Cauldwell, he was covered in blood, claiming he'd blacked out. Then he disappeared. Five years later, he's back, this time with a brother no one has ever heard of and a debt he owes her. She wants nothing to do with him, but something strange is going on with her body and the draw to be near him has never been stronger.

Hunter Cauldwell's bond with Bryan runs deeper than blood. He brought Bryan back from the brink of death years ago, and now, together, they must save Lacey and try not to kill each other in the process. But first, they'll have to reveal their secret to her and convince the stubborn woman to cooperate. Lacey might learn to accept her new nature, but can she devote her life to the men who may have killed her father?