A Promessa

The marshal of a wild Kansas border town is killed in a gunfight in a saloon. His son, Cheyenne Harry, shoots dead two of the killers. Not wanting to lose both her son and her husband to gun violence, Harry's mother gets him to agree never to carry a gun again. However, Harry's rival for the beautiful Conchita, Boone Travis, commits a murder and frames Harry for it. Complications ensue.
Movie now considered lost.