This is the tenth of 20 appearances Frank Wilcox makes in this series, each time playing Federal DA Beecher Asbury. While still appearing in this series, he took on the recurring role of oilman John Brewster, a role he is perhaps best remembered for, in the hit TV sitcom The Beverly Hillbillies (1962).
This is the first of five appearances Michael Constantine makes in the series, each time appearing as a different character.