Ever since he was turned, FBI special agent Ty Duncan has had one mission: bring rogue vampires to justice. As a recruiter for Belladonna, a shadow agency formed to keep vampires in check, Ty must recruit Ana Martin, a beautiful but damaged woman and one of the few humans who can infiltrate places that his kind cannot. As they work together, Ana and Ty climb the heights of pleasure and passion even as an enemy is conspiring to destroy them both.