The Gene Autry Show (1950) : 3x12

Gene and his friends Pat and John Morgan transport a wagonload of freight to San Dimas. On the way, John is killed by attacking outlaws. Gene finds empty 49-90 bullet shells, and goes into investigation. Afterwards, John's son Tim sells the freight line to Paul Nash, the local banker. He was talked into it by Laura Bryan, who works for Tim, but also secretly works for Paul. To stop the sale, Gene puts to line into bankruptcy, and continures to investigate, only to find himself taken prisoner by the outlaws. Gene escapes, and returns to town, where he is accused of robbing a safe. Laura confesses she gave the combination to Paul to keep Tim from getting hurt. Gene is released, and goes after Paul, who is taken in.