The film is loosely based on the killing spree of Charles Starkweather, upon which the films Badlands and Natural Born Killers were also based. The Sadist (also known as Profile of Terror and Sweet Baby Charlie) is a 1963 black-and-white exploitation film. Three people have car trouble and pull off into an old wreck yard where they are held at bay by a bloodthirsty psycho and his crazy girlfriend.