Innocent people are being brutally murdered on the streets of New York by a uniformed police officer. As the death toll rises and City Hall attempts a cover-up, Frank McCrae (Atkins) heads the investigation. A young cop, Jack Forrest (Bruce Campbell), finds himself under arrest as the chief suspect, having been the victim of a set-up by the real killer and a mysterious woman phone-caller. Forrest, his girlfriend Theresa, and McCrae set out to solve the puzzle before the Maniac Cop can strike again.
Cohen takes the slasher/serial-killer genre and puts a unique spin on it while adding plenty of gallows humor