Homicide detective Allison Goodnight has a big problem. The mutilated victim in her latest case was killed by a werewolf. She ought to know the signs; she's a werewolf, too. Her whole family is...members of an ancient species separate from humans but able to pass as human. It's urgent she close this case without revealing the killer's nature, before humans' racial memory of her kindred reawakens. And her new partner is watching her with unnerving intensity. Zane Kerr's excitment at working with the best detective in the department has become tempered by worry about Allison's secretive conduct of this case. It almost seems as if she is trying to protect, not catch, the killer. Watching Zane watch her, Allison is afraid that if Zane sees too much, she may have to turn killer herself to protect her people.