Under Wraps (The Underworld Detection Agency Chronicles)

As a human immune to magic, Sophie Lawson can help everyone from banshee to zombie transition into normal, everyday San Francisco life. With a handsome werewolf as her UDA boss and a fashionista vampire for a roommate, Sophie knows everything there is to know about the undead, the unseen, and the uncanny. Until a rash of gruesome murders has demons and mortals running for cover, and Sophie finds herself playing sidekick to detective Parker Hayes. Dodging ranging bloodsuckers, bad-tempered faires, and love-struck trolls is one thing. But when Sophie discovers parker isn't what he seems, she's only got one chance to figure out whom to trust. Because an evil hiding in plain sight is closing in...and about to make one wisecracking human it means to ultimate power.