Exorcist Denis Kaine has spent his life fighting demons, but nothing could prepare him for losing his twin brother. When the Vatican declares Xavier's death a suicide, Denis knows better. Something made his brother pull the trigger. He's going to find out the truth, no matter the cost.

Fueled by rage, whiskey, and a reckless disregard for his own survival, Denis scours the dark underbelly of Rome, exorcising every creature that slithers up from Hell to get in his way. But his search takes a dangerous turn when he stumbles upon a Vatican-sealed crypt and accidentally releases something far older, far more powerful than any demon he's ever faced.

She's not a ghost. She's not a demon. But she's hungry, and she's not leaving without raiding his fridge.

Now, exiled from the Church and stuck with a thousand year old roommate named Emma, Denis is forced into an uneasy alliance. If he wants to know the truth about Xavier's death, he'll need Emma's help. Armed with a messenger bag full of holy water and their habit of making bad decisions, they dive into the darkest corners of faith, power, and the Vatican's buried secrets.

And something is watching. Hell isn't the only thing hunting him.

Perfect for fans of Harry Dresden and the Supernatural TV series.