First appearance of Peter Breck as Doc Holliday. The character had been portrayed twice during the first season by Gerald Mohr.
Bart makes a rare post-Season 3 Bret Maverick reference when he makes Bret the beneficiary of his life insurance policy. In conversation with Doc Holiday, Doc asks if Bret himself might kill him for the insurance money. Bart at first denies it and then considers for a moment, saying: "Still, we haven't been too close lately"--a sly reference to the fact Garner had left the series the season before and had only appeared in one episode of the 4th season ("The Maverick Line") that had been shot at the end of Season 3.