Trivia: Perry Mason's WWII service is revealed as it is stated here that he served on a Navy minesweeper in the South Pacific with the defendant.
The card at the pawnshop says that Sarah Demay's address is 204. However, when they get there, they go to 203.
The prosecutor's last name is given as Green in the credits, but everyone refers to him as Telford. The actor played D.A. Telford in previous appearances.
A most unusual sign is posted on the outside of the train station. It can be seen in the background after Iris arrives in Pinon City, is speaking with her Aunt Sarah and Dan Southern (Adam West) approaches them. The sign reads, "UNBEARDED MEN WILL BE PINCHED". It is hung just to the right of another sign advertising: "PINON CITY FOUNDERS WEEK - JULY 7-14 - GALA CELEBRATION - 76 Years of Progress"
Kathie Browne is listed in the credits as portraying Donna Loring, but in the episode she is called Donna Ross.
Trivia: Paul Drake is the one who apprehends the murderer in this episode.