Bonanza
The Blood Line
S2 E15:
When 16-year-old Todd Grayson arrives from Boston to Virginia City, he is told that his father has been killed by Ben Cartwright. Ben shot Luke Grayson in self-defense, but Todd won't listen to this. The boy has only one thing in his head: to avenge his father by killing Ben Cartwright.
Starring
Jan Sterling, David Macklin, Lee Van Cleef