One by One (1968)

At the Texas/Mexico frontier, during the Civil War, Colonel Greyson was accused of embezzling $ 500,000 that he was to deliver to the Confederate command. In fact, he was betrayed by four officers who accompanied him, and robed the money. When a young man reveals to be Bill Greyson, the son of the colonel, he is about to be lynched by the infuriated, and wrongly informed citizens. El Charro, the leader of a Mexican gang, tells the real story to Bill, and helps him in his revenge plan: to identify and eliminate the four men, who are now respected - and wealthy - citizens. El Charro expects the naive young man to be happy to rehabilitate his family name, and he will outsmart him and take the money. A public statement rehabilitates Bill, alright, and the money comes into the pockets of El Charro. Does crime pay?