A smart new thriller that breaks the traditional horror rules, from the world's most successful podcasting author. Across America, ordinary people are suddenly turning into raving murderers, possessed with inhuman strength. Dew Phillips, a specialist working for the CIA, risks his life as he travels across the country, trying to stop the possessed killers. Meanwhile, Margaret Montoya, a CDC scientist, discovers the terrifying cause of the infection the killers have contracted: a parasite that is technological rather than biological in origin, engineered with a complexity far beyond modern science. And in a small town, one young man battles with his own body as he realizes that he is infected, and the fate of the world may depend on his fight to retain his sanity.