A curmudgeonly instructor at a New England prep school is forced to remain on campus during Christmas break to babysit the handful of students with nowhere to go. Eventually, he forms an unlikely bond with one of them — a damaged, brainy troublemaker — and with the school’s head cook, who has just lost a son in Vietnam.

In the aftermath of an unspeakable act of terror, Police Sergeant Tommy Saunders joins courageous survivors, first responders and investigators in a race against the clock to hunt down the Boston Marathon bombers before they strike again.