Just when guardian Riley Jenson thought her life was getting back to normal, fate has another twist in store for her. The alpha of her distant pack—and the man who once tried to kill her by pushing her off a cliff—is asking for her help to find his missing granddaughter. Riley would like to refuse, but if she does, her mother will die. And if that's not enough, something is dismembering people, and it's up to Riley to track down the killer before one more soul is embraced by darkness.