The Nash family is close-knit. Tom is a popular teacher, father of two teens: hockey star Eli and his sister Deenie, a diligent student. Their seeming stability, however, is thrown into chaos when Deenie's best friend is struck by a terrifying, unexplained seizure in class. Rumors of a hazardous outbreak spread rapidly through this Northeastern community. As hysteria and contagion swell, a series of tightly held secrets emerges, threatening to unravel friendships, families and the town's fragile idea of security. A chilling read from the author of Dare Me (2012).