The Angel of the Abyss (Tales of Jake Hatcher)

Never one to leave well enough alone, ex-special forces interrogator and demon magnet, Jake Hatcher, went looking for trouble and found it. Finally able to be with the woman he truly loves, his bank account swollen beyond proportion, life for anyone else would seem charmed, but his good fortune came at a steep price. Two years after witnessing his former lover, Vivian Fall, disappear into perdition, Jake may finally have been offered a way to free her. But the forces determined to stop him are hidden, and a deal with the devil cannot easily be trusted. Jake must discover for himself if he has what it takes to survive a battle of wit and wills with both an unknown contender for the Throne of Damnation and the being that has been its occupant since the dawn of creation.