Bonanza

The Burning Sky (9x18)

: 28, 1968

A cruel, sadistic, alcoholic and racist rancher named Aaron Gore stalks the wife of Ben's friend, whom he has hired as a horse trainer. The woman is a glowingly beautiful Sioux who befriends Mr. Gore's son, whom he regularly beats up. Mr. Gore uses some incredibly vicious means to ensure she regrets ever having anything to do with his son.