Robert Fuller plays a boyhood friend of Johnnys. Only 2 months earlier in The Souvenir (1959) he played a character Johnny thought he had shot.
This episode provides the least screen time for John Russell (Marshal Troop) of the entire first season. He appears for two minutes at the beginning of the program, and doesn't return for the remainder of the episode. Also, Troop's murdered predecessor, Marshal Lemp, is mentioned briefly during the storyline, one of the few times he is cited since the very first episode.