Bodies of young men are turning up all over Sin City. It's the way they died that can't be explained.

When Charlotte is kidnapped, Reece and his team are sent on a scavenger hunt across Las Vegas in search of her location. But are they already too late? Is the unidentified body of a Jane Doe lying in the County Coroner's Office her?

Sheriff Lozano enlists Reece's help when a series of unusual deaths forces him to believe his department is out of its depth. He's heard rumors about the PI and wants to find out if they're true. Can they work together to solve the mystery, and will Reece let the sheriff in on what has happened to his fiancée?

As the two cases collide, Reece ventures into the subterranean world beneath the city alone. What has he discovered that he's not sharing? And what ancient evil is he hunting?