The establishment shot of the Hotel Royal exterior appears to be from World War II. All of the visible cars look prewar (or 1942 at the latest) and the neighboring property has a "Victory Clothing" sign.
Beginning with this episode, the rather jazzy arrangement of theme music in the opening and closing credits was replaced by a more symphonic arrangement that was used through the end of season eight.
Two of the guest stars, Eduardo Ciannelli and Elisha Cook Jr., had previously costarred in Dillinger (1945).
The murder victim in this episode was played by James Anderson, who would go on to play Bob Ewell in To Kill a Mockingbird (1962). The cast of the previous episode, The Case of the Lucky Loser (1958), included Richard Hale, who would later play Boo Radley's father in the same film.
Up to this point, Perry had a portfolio-style briefcase. In this one, he begins using a standard hard-sided briefcase.