People are dying in the street - the hospitals are overwhelmed by sheer numbers. Is it mass food poisoning, a virus, or something more sinister? Has someone, rather than something, caused this? Detective Duckworth is already investigating two murders and an explosion at the town's drive-in. He starts to wonder if these crimes and the new attacks are connected to the mysterious incidents in Promise Falls involving the number twenty-three. A pulse-pounding, race-against-time thriller.