The American Gun MysteryWhen a washed up Hollywood cowboy turned circus rodeo actor is shot dead in the midst of his performance at a New York sports palace, in front of thousands of onlookers, it seems obvious that someone would have seen the perpetrator of the crime or at the very least, recovered the gun. But when the ensuing investigation fails to turn up any evidence, even after the newsreels made in the moment are reviewed, the net of suspicion widens across the troupe