John Hillerman and Betty White would later co-star together on the short-lived CBS sitcom The Betty White Show.
Eve Arden's radio role in this episode is strongly based on her TV role in the 1950's sitcom Our Miss Brooks.
Bert Parks was the longtime host of the Miss America pageant.
This was the final acting role for John McGiver. Sadly, he died of a heart attack on September 9, 1975, a month and 10 days before the episode aired.
Vera: Olivia's a cretin but what can you expect? It's radio.
Inspector Queen: Between no sleep and this ridiculous diet I'm turning into a pretty poor father.
Vera: (to Ellery) Miss Aggie should never appear afraid.
Louise: (to Vera) If you're not safe in the RCA Building you're not safe anywhere.
Inspector Queen: (to Ellery) That was the Mayor. His wife is in mourning for Miss Aggie.
Inspector Queen: Get out of here, Brimmer. This is one case you're not gonna be meddling in.
Ellery: It's about Vera Bethune, Mr. Warren.
Warren: I already gave.
Warren: (about why he broke up with Vera) Why tie your wagon to a dead horse?
Ellery: What about your diet?
Inspector Queen: The Constitution of the United States expressly forbids cruel and unusual punishment.
Ellery: Dad, we'd better get down to the station right away. Simon's gonna accuse the wrong person.
Inspector Queen: You're paying suspects?
Brimmer: Unfortunately, Inspector, my suspects are members of the radio actors union. I have no choice.
Pearl: (to Brimmer) Don't call me, I'll call you!