The Thing That Darkness Hides (Teddy London Supernatural Detective)

Teddy London is a private investigator with a case load of strange crimes and even stranger clients. Millionaire George Collins swears he sold his soul to the Devil, and now he wants it back. So he goes to Teddy London to get the job done, because London will go to the ends of the earth to help a client. But even that may not be far enough.