Ellery: Danny, you watch your temper.
Brimmer (to Winer): A bit overplayed, wouldn't you say?
Ellery: What happened?
Brimmer: Murder, plain and simple. Tell your father to alert his minions.
Inspector Queen: A record library is the perfect place for a murder. Nobody around.
According to the production code, this was the final episode of the series to be filmed.
Daniel Boone (Albert Salmi), F Troop (Ken Berry), Occasional Wife (Michael Callan), My Sister Sam (Dori Brenner), and Three's Company (Norman Fell) are among the shows with alums appearing in this episode.
This episode marked the final appearance of John Hillerman as radio mystery sleuth Simon Brimmer. Brimmer was 0-for the series when it came to guessing the correct killer.