Jillian Conrad never believed in vampires - until she was unwillingly injected with a serum that was supposed to act as a deadly poison to them. Previously, in Nightshade, tormented half-vampire Declan Reese wanted her blood to destroy the undead kingdom. Unfortunately, the serum also made her blood irresistible to all vampires - including Declan, whose desire for Jillian was more than mere hunger. Now, Jillian's blood has killed the vampire king. An enemy to all vampires, she is targeted for elimination - and so is the infant daughter of the dead king.