On a crisp autumn night, a man is murdered in his car. This was the first murder, quickly followed by more killings, all equally brutal, and apparently inexplicable. Detective Scott Sullivan unique ability to uncover the patterns that others miss has brought him an impressive string of arrests. Together with Lieutenant Luther Peterman, Scott unravels threads that lead back in time, and straight into the heart of the past. But the old case, unfolding before there eyes, has left them looking for something that may not exist. An angel of death with a soul dark as hell itself.