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Movies like Guilty Trails (1938)

Banker Eason uses Yates to stage a fake holdup and in the ensuing chase and gunfight Eason kills Lawson. Sheriff Bob Higgins was in the chase and in the confusion thinks he killed him. Quitting as Sheriff he later finds Yates gold piece at the scene. But just as he is about to get a confession from Yates, Eason shoots Yates.