The Crazies

In the fictional town of Ogden Marsh, Iowa, residents begin to exhibit bizarre behavior, such as a man entering a town baseball game with a shotgun and a neighborhood farmer trapping his wife and son in a closet and setting fire to the house. These changes are observed by David, the sheriff of surrounding Pierce County, and his pregnant wife, Judy, the community doctor. David and his deputy, Russell eventually discover that a C130 military aircraft crashed into the town's river, leading David to suspect that the plane's cargo contaminated the water supply and is the cause of the strange behavior.