Private eye Mike Hammer (Meeker) is driving his convertible on a dark highway when he sees the almost naked Christina Bailey (Leachman) running down the middle of the road. He picks her up, but is soon forced off the road. Hammer is knocked unconscious, and Christina is killed. Both of them
are put back in his car, which is then pushed off a cliff. Surviving, Hammer investigates, his curiosity aroused by an FBI warning to stay away. He finds Christina's roommate (Rodgers) and also meets a powerful gangster (Stewart) whose strings are being pulled by a mysterious higher power. Hammer
knows he's on to something when his mechanic friend (Dennis) is killed and his secr...