The Road to Jericho (The Hell Walker Series #1) by Mark Reefe
No good deed goes unpunished. That’s a lesson Finn McCallan will soon learn. While saving the life of a critically injured woman, Finn gains the attention of a powerful demon. Amused by Finn’s selfless heroics, the fiend tricks him into a contest, one designed to help Finn “find” his soul. What Finn doesn’t know is this contest will push him beyond the darkest regions of our mortal world.