Nelson Riddle wrote the theme music played at the beginning and end of each episode.

David Niven (Alec Fleming) and Robert Coote (Timmy St. Clair) played Captain Fritz von Tarlenheim in different adaptations of the 1894 novel "The Prisoner of Zenda" by Anthony Hope: Niven in The Prisoner of Zenda (1937) and Coote in The Prisoner of Zenda (1952).