When she discovers that a would-be creator is determined to make his own demons and needs her blood, former witch-turned-day-walking demon Rachel Morgan, a bounty hunter, faces her toughest adversary yet--humanity Ritually murdered corpses are appearing across Cincinnati, terrifying amalgams of human and other.Pulled in by the FIB to help investigate, former witch-turned-day-walking demon Rachel Morgan soon realizes a horrifying truth: others want to create their own demons, and to do so they need her blood. She's faced vampires, witches, werewolves, demons, and more?but this time Rachel's toughest challenge might be humanity itself.