Road to Ruin (2016)

This is a solid in-depth look at the making of the movie The Naked Prey featuring interviews with David Hess, Franco Nero, Corinne Cléry as well as members of the crew. It's cool to learn that Nero put in a word for David Hess - the two actors had worked together on the TV film '21 Hours at Munich' and Nero had great things to say about the young and ambitious actor and recommended him for this film.