For a Few Demons More (The Hollows, #05)

Despite dating one vampire and living with another, Rachel Morgan has always managed to stay just ahead of trouble . . . until now. A fiendish serial killer stalks the Hollows, and no one living in or around Cincinnati—human, inhuman, or undead—is safe. An ancient artifact may be the key to stopping the murderer—a mysterious relic that is now in the hands of Rachel Morgan, fearless independent bounty hunter and reckless witch. But revealing it could ignite a battle to the death among the vast and varied local supernatural races. Rachel's been lucky so far. But even she can't hide from catastrophe forever.