Collared

When ex-priest Jack finds a dead man nailed to his bed, he knows it's going to be a bad night. He just has no idea how bad. Now he's been recruited by his own personal demon to find the thieves who killed a man, kidnapped his family, and stole something of indescribable value from the demonic Math. To find answers he has to delve deep into the infernal underbelly of his town and face his own past. Jack's been promised his soul back if he succeeds.
As local cop Ben Ambrose risks his own soul by following too closely in Jack's footsteps, and with a child's life on the line, Jack has to decide if it's a deal he's willing to make. Originally published in the anthology Devil Take Me.