It’s a vampire. But not just a vampire—it’s the original vampire. Even the most appalling legends fail to convey how horrifying it really is. After a miraculous escape from the beast, Dex and Daphna find a deadly disease spreading across the country. On the run from authorities, they must discover how to end the plague, kill the gender-bending monster once and for all, and recover some semblance of a life with no parents. But their quest attracts new and powerful adversaries seeking to prevent them from discovering the greatest secret the world has ever known, even at the cost of the world itself. What the twins discover launches the already controversial Sacred Books Series to positively incendiary heights.