Aranda (Rodolfo Acosta, the Mexican-born sheriff of Prince River, regularly betrays his own people by participating in a land grab perpetrated by ruthless miner Owen Driscoll (Warren Stevens). The Cartwrights become involved when Aranda frames Mexican farmer Ramon Cardenas (Jaime Sanchez) for murder, the first step in Driscoll's scheme to buy out the other farmers for ridiculously low prices. A shocker ending caps this Bonanza episode, which was written by Ken Pettus and Dick McDonough. "El Jefe" first aired on November 15, 1970. ~ Hal Erickson, Rovi