Sins of the Heart by Eve Silver

Half human, half god, Dagan Krayl is the Underworld’s most powerful soul reaper. When one of his brothers is murdered, Dagan must use every ounce of his power to hunt down those responsible for his brutal death. But he must move swiftly—and carefully—if he’s to have any chance of resurrecting his brother.

Yet that resurrection could wreak havoc on the mortal world. As an Otherkin, Roxy Tam has sworn to protect the human race, and it’s her mission to stop Dagan. But when she sees him face-to-face, she realizes that she has seen him once before—a meeting that changed her life forever.

Neither Dagan nor Roxy expect to join forces for the sake of mankind. Or to have their loyalties tested as they struggle against the potent desire that threatens to consume them both…