In a search for a serial killer, a fallen angel and a Detroit crime boss find themselves engaging in an erotic dance of love and lust.

In punishment for rebelling against God, Celeste is banished from Heaven. She has spent centuries on earth trying to keep mortals safe from those of her brethren. As an Enforcer, she still does what she can to protect the innocents from the evil in the world.

Adam Montgomery lives on the wrong side of the tracks in Detroit as the head of a crime syndicate. He's crawled his way to the top, and nothing will keep him from getting what he wants. And what he wants is Celeste.

Yet as they try to track down a serial killer who's more than human, Celeste and Adam discover they are in danger of losing more than their lives. They could lose their hearts to each other, but is their trust enough to survive Celeste's secret?