Der Springteufel

Der Springteufel is a 1974 West German TV movie starring Dieter Hallervorden and Arno Assmann, directed by Heinz Schirk based on a story by Derrick Sherwin, an English television writer best known for his work in Doctor Who. It's a psychological thriller about a hitchhiker to Frankfurt who takes the man who gives him a lift hostage and plays mind games with him. It was released on DVD in 2006.