Breakheart Pass. 1973.
John Deaken is a prisoner being transferred by train, on board is a vaccine for diphtheria, along the way someone is killing off everyone on board one by one. Charles Bronson plays a mysterious outlaw who is held prisoner on the train, though there are plenty of clues that he may not be exactly who he says he is. Other well delineated characters are played by Richard Crenna, Jill Ireland, Archie Moore, and Ed Lauter. One truly amazing sequence involves a rooftop scuffle between Bronson and Moore. I went on a search for a Bronson movie to watch and this popped up, was hesitent about it, it is a bit of a drag but entertaining at the same time.
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