What was the 1971 television film directed by Steven Spielburg in which the winner of an Emmy Award for Best Supporting Actor (Continuing Character) in a Dramatic Series appeared? 
Mark McCain: Mark McCain is the son of rancher Lucas McCain in the ABC Western television series "The Rifleman," which ran from 1958 to 1963. Dennis Weaver:  He appeared in the 1971 television film "Duel", the first film of director Steven Spielberg.
i don't know