The "howdunit" of this case bears a strong similarity to the solution of an episode of Perry Mason entitled The Case of the Wednesday Woman.
Pat Harrington is best remembered for his role as wacky apartmen supervisor Duane Schneider on One Day at a Time.
The radio announcer of the baseball game Zelda Van Dyke is listening to is long-time New York Yankess broadcaster Mel Allen.
The resort town of Wrightsville, the setting for The Adventure of the Chinese Dog, is mentioned at the beginning of the episode when Ellery states he's going there for some rest and relaxation before getting dragged into the murder investigation.
Johns: Inspector, you measure a newspaperman by the number of enemies he's made.
Johns: (to Inspector Queen about Flannigan) Do I have to stand here and listen to this overrated fool?
Flannigan: I'm just trying to serve the people, Inspector.
Ellery: Don't you like elevators?
Velie: Not this one.
Judy: $22.50 a week doesn't go very far these days.
Johns: McCully is an All-American, red-blooded idiot.
McCully: I can spot a Commie at 50 paces.
McCully: You show me a man who's trying to sell world peace and I'll show you a card-carrying Commie every time.
Ellery: Strange how people end up, isn't it?
Inspector Queen: You wanted to be a magician.
Ellery: I was eight years old.
Inspector Queen: (to Ellery) You mean I was dragged down here in the middle of the night to find out this case is still impossible to solve?
Ellery: Flannigan, what are you doing here?
Flannigan: Oh, just trying to make a living.
Flannigan: The police don't pay Flannigan's salary. The Gazette does.
Arthur: Do you have any idea what it's like writing about dead people every day?
Ellery: Well, sort of, yeah.