Lucio Fulcis tale of a serial killer on the loose in the Big Apple. When a womans body is discovered on the the banks of the Hudson, the subsequent post-mortem reveals that she was most definitely killed by a maniac and the police begin to worry that he might strike again. Sure enough, its not long before a body is discovered on a ferry, and then another in a nightclub, but with clues thin on the ground, the police are no closer to catching the culprit. However, when the next victim manages to escapes the clutches of her assailant, a vital clue is revealed: the killer is missing two fingers!