An unusual case in that the murder victim is never seen, either alive or dead, not even in a photograph.
This is the first episode William Talman appeared in after being rehired by the studio. His first episode back was The Case of the Fickle Fortune (1961) after missing 12 episodes. This is his 7th episode since returning.
Detective Paul Drake drives a newer-model Ford Thunderbird convertible. (It appears to be a 1961 model.)
Even though Joyce Mackenzie and Anne Helm played mother and daughter, there was only a thirteen year age difference between them.