P.I.A. Agent and shifter Grace Masterson is on leave after surviving being held captive and subjected to horrific experiments. She doesn't need a fellow agent-who's way too charming and protective-showing up to check on her. And she definitely doesn't want the unsettling pull of desire that's started appearing anytime he's around. Darrius Hilliard knows what Grace needs, and it's not people treating her with kid gloves. She's a damn good agent, and she needs a small push to get back into the job. But it soon becomes clear that there's someone out there who wants to see her and other survivors of the experiments dead. With the line between friendship and lovers growing blurry, Darrius is more determined than ever to keep her safe. Soon they're in a world of danger and passion, where secrets are revealed and trust is fragile. But it becomes clear their bond with each other is as inevitable as the evil that would see them both destroyed.