Kelly Walker will do anything to catch her sister's killer, including entering a world she'd had no idea existed, and giving her heart to a man not completely human. Kelly Walker is determined to bring down the man who killed her sister. One year later and there still hasn't been an arrest made. She knows there is an on-going investigation headed by the attractive and intriguing Alex Gray. The only man who has ever been able to touch something deep inside her she'd rather not know about. Their attraction is almost animalistic. Alex Gray has tried for a year to keep Kelly out of the investigation he's given two years of his life for. But when he finds her trapped with the man he knows has killed before, he must risk everything to protect her. Showing her what he really is and what they are up against could cost him the one thing he's waited his entire life for—a mate.