Her job description is the "tracking and apprehension of mentally-fractured killers." What this really means in FBI profiler Jace Valchek's brave new world—one in which only one percent of the population is human—is that a woman's work is never done. And real is getting stranger every day . . .

Jace has been ripped from her reality by David Cassius, the vampire head of the NSA. He knows that she's the best there is in the business, and David needs her help in solving a series of gruesome murders of vampires and werewolves. David's world—one that also includes lycanthropes and golems—is one with little knowledge of mental illness. An insane serial killer is a threat the NSA has no experience with. But Jace does. Stranded in a reality where Bela Lugosi is a bigger box office draw than Bruce Willis and every full moon is Mardi Gras, Jace must now hunt down a fellow human before he brings the entire planet to the brink of madness. Or she may never see her own world again . . .