Unregistered paranormal Caleb Jansen only wants a normal life. But when a demon murders his brother, Caleb knows he has to avenge Ben's death, no matter what the cost. Unfortunately, his only allies belong to an extremist group who would kill Caleb if they found out about his talent.

Gray is a wandering spirit, summoned to hunt and destroy demons by drinking their blood. This hunt goes horribly wrong, and for the first time in his existence Gray is trapped in a living, human body. Caleb's body - and Caleb is still in it.

Hotshot federal agent John Starkweather thinks he's seen it all. But when he's called to exorcise Caleb, he finds a creature which isn't supposed to exist outside of stories. For Gray is a drakul: a vampire. Having spent his life avoiding the government as an unregistered 'mal, Caleb can't let himself trust a federal exorcist, no matter how sexy. And he certainly isn't going to give into the heat growing between them and sleep with Starkweather.

Can Starkweather win Caleb's trust and convince him he isn't the enemy? Can Caleb keep Gray under control, as the drakul experiences the temptation of a living body for the first time? Because if he fails and Gray gives in to bloodlust, Starkweather will have no choice but to kill them both.