Every patient zero has a doctor. Edward Taylor just killed a man. It wasn’t the first time but it could be the last. For the last twenty years, he’s been careful, hiding his true self behind a mask of humanity. But now someone out there knows what Edward is, and he has no idea what they’re planning to do with that knowledge. When he’s approached by a journalist working to bring down controversial research lab, Hunter Neurologics, Edward’s personal and work life collide. Cornered, and with his paranoia growing, he’s forced to take action and triggers a sequence of events that might just unleash a plague of the dead on the world. Dexter meets The Walking Dead in this gripping prequel to the brand new horror series, Serial Killer Z.