Beware the Leaven is a vampire novel like no other. The definitive vampire tale. History's first vampire is identified, and their unending bloodlust is finally explained. In identifying history's first vampire, and the reason for the creature's birth, the novel breaks ground previously untread within the genre. The vampire's bloodlust is meticulously explained. Not just any blood will do, and there are caveats, even for the undead as they stalk humanity. But if the proper bloodline is ultimately found, humanity may well face a quick and unthinkable end. Only the custodians stand between the vampire population and their prey, and the custodians' line predates even that of the vampire. Beware the Leaven will cause the reader to think about vampirism as never before.