The High Chaparral (1967) : 4x6

Fearing for the life of his threatened brother Buck, John Cannon accepts the demands of a blackmailer. Confronted by the demands of one-time gunman Tulsa Red, John has little choice but to turn over $5,000 to the man who has threatened to goad Buck into a shootout that John knows his brother will lose. Upon learning of how he was used, an angered Buck takes his own steps to recover the money and his pride.