In Tripwire, Reacher is settling into lazy Key West when his life is interrupted by a stranger who comes looking for him. When the stranger turns up beaten to death in the Old Town cemetery - fingertips removed - Reacher knows whomever the man was working for is not a friend. Reacher follows the trail to New York, where he confronts the people who dispatched the dead man: an elderly couple still mourning an all-American son lost in Vietnam, an alluring and intelligent woman from Reacher's own haunted past, and at the center of the web, an opponent more vicious than any he's ever faced.