National bestselling author Eileen Wilks has thrilled countless readers with her fresh and compelling stories. Now, she has created a bold new world where the magical and the mundane co-exist in an uneasy balance—a balance that is threatened by a cold-blooded killer. And the only one who can end the threat is a cop on her own knife-edge struggling with a particularly tempting danger…

Lily Yu is a San Diego police detective investigating a series of grisly murders that appear to be the work of a werewolf. To hunt down the killer, she must infiltrate the clans. Only one man can help her—a were named Rule Turner, a prince of the lupi, whose charismatic presence disturbs Lily. Rule has his own reasons for helping the investigation—reasons he doesn't want to share with Lily. Logic and honor demand she keep her distance, but the attraction between them is immediate and devastating—and beyond human reason. Now, in a race to fend off evil, Lily finds herself in uncharted territory, tested as never before, and at her back a man she's not sure she can trust…