I have no idea what this film is called and have a very sketchy memory about what the films about. Vampire but not your normal vampire movie. A teenager who thinks he's a vampire, mid 70's I'm guessing and the film had a brutal rape scene set on a sleeper train using drugs and syringer.

Please let me know if you have any ideas, thanks

Martin. Martin (1977) - IMDb (http://uk.imdb.com/title/tt0077914/)