Having survived the double-cross planned by Samael, the demon king, and Fanon, his own spawn-father, Augustus Thorne is trying to come to terms with his lot in life. Both Fanon and Agamemnon, the king's assassin, are dead. But also gone is the only woman Augustus has ever loved -- driven away by the dangers his lifestyle brings. Augustus doesn't have the luxury of dwelling on what might have been. An insidious new threat has emerged, one that exposes humanity to a danger unlike anything they've ever faced before. Stumbling upon a mysterious woman who appears to be the only other Cambion he's ever met, Augustus discovers he doesn't have to face this new threat alone. Has he finally met his soul mate, or is she too good to be true?