Vampires may not walk among us, but FBI agents Della Hamilton and Mason Carter know real monsters exist. They've witnessed firsthand the worst humankind has to offer. They're still catching their breaths after the apprehension of two such monstrous killers when they're met with horrific news: Stephan Dante, the self-proclaimed king of the vampires, has escaped from prison, followed only by a trail of blood.

All too familiar with Dante's cruelty, Della and Mason know the clock is ticking. But as Dante claims more victims, a chilling message arrives. The vampire killer seeks his eternal bride—Della herself. Playing into Dante's desires might be the only way to stop the carnage once and for all, assuming they can outwit him. Della is confident the agents have the upper hand, but Mason knows every gamble runs the risk of not paying off, and this time, the consequences could be deadly.