Brown twice guest-starred in another ABC/WB western, "Colt .45", with Wayde Preston. He appeared as Dave with Andrew Duggan and Bob Steele, who were cast as Jim Rexford and Sergeant Granger respectively in "The Peacemaker" or "Judgment Day", the series premiere in 1957. Thereafter that same season, he was cast as Jimmy Benedict opposite Charles Bronson as the outlaw Danny Arnold in the episode "Young Gun". In the story line, Benedict, who wants to make a name for himself, challenges Arnold to a gunfight.