A propulsive and chillingly prescient novel of suspense and terror from the Bram Stoker award–winning author of The Cabin at the End of the World and A Head Full of Ghosts.

"Absolutely riveting." — Stephen King

In a matter of weeks, Massachusetts has been overrun by an insidious rabies-like virus that is spread by saliva. But unlike rabies, the disease has a terrifyingly short incubation period of an hour or less. Those infected quickly lose their minds and are driven to bite and infect as many others as they can before they inevitably succumb. Hospitals are inundated with the sick and dying, and hysteria has taken hold. To try to limit its spread, the commonwealth is under quarantine and curfew. But society is breaking down and the government's emergency protocols are faltering.

Dr. Ramola "Rams" Sherman, a soft-spoken pediatrician in her mid-thirties, receives a frantic phone call from Natalie, a friend who is...