Ken Curtis plays Festus Haggen for the first time in this episode. The Festus character became a regular during the ninth season.
It is revealed that Festus had a twin brother named Fergus.
Ken Curtis who portrays Festus Haggen was nearly 4 years older than Denver Pyle who portrayed Festus's Uncle Black Jack Haggen. When this episode was produced Ken Curtis was 46 years old while Denver Pyle was 42.