Future movie-studio executive Tony Bill is cast as halfbreed Charlie Two, who has sworn to killi the Cartwrights to avenge the hanging of his father Charlie Monahan. Hoping to dissuade Charlie, Joe Cartwright adopts an alias and accompanies the boy on his journeys. In the course of events, the two men find that they have a lot more in common than meets the eye. First broadcast on November 20, 1966, "The Oath" was written by Sidney Ellis. ~ Hal Erickson, Rovi