Ten years have passed since the events of THE REVEREND'S POWDER. Instead of choosing the straight and narrow path in life, Matt has forsaken goodness, becoming a feared gun-for-hire. In his mind, though, he considers himself a public servant, eliminating evasive criminals who deserve righteous justice, for a nominal fee of course.

Now, faced with a target even feared by law enforcement and criminals alike—a devotee of Santa Muerte, the Mother of Death—Matt grapples with the consequences of his chosen profession. As he pursues a drug cartel killer conducting grisly sacrifices, he catches the attention of Santa Muerte. Appreciation from the deity brings unforeseen demands, and Matt must reckon with the cost of being esteemed by a force as deadly as the one he pursues.