I saw this on German television, dubbed, probably mid to late 1980s. I'm moderately sure it is a North American production, though it might be a made-for-tv movie rather than a Hollywood film, or Canadian. The film is set in what was then the present, i.e. mid 1970s to mid 1980s. The protagonist is a young man in his twenties, who wants to be a private investigator. His father is a policeman, still active, I think, probably with an important...
Originally asked by Herr Rau on Stack Exchange (movies) (CC BY-SA 3.0).