Bret is fighting a murder charge. But when he meets his lawyer — a numerologist, astrologer and bungler — he knows his number is up.

This is the episode that introduces Roger Moore as Cousin Beauregard Maverick. Beau is considered the ""white sheep"" of the family because he had the misfortune of earning a medal in the Civil War. (He had won the medal purely by accident.) Pappy had banished him to England for five years because no Maverick had ever been a hero. Bart Mavrick greets Beau upon his return to America and enlists his cousin to impersonate the son of the Marquis of Bognor, who had been indentured to work on a ranch in Wyoming for six months. The Maverick cousins stand to earn $4,000, but the play goes awry when Beau is kidnapped by a man who wants to settle a grudge with the Marquis.

Cowardly George Parker (Alan Hewitt) offers Doc Holliday a tempting reward. All Doc has to do is kill his best friend — Bart.

While trying to get a young girl's romance back on the right track, Bart gets involved in a train robbery to end all train robberies.