Last of eight appearances in the series by Dabbs Greer.
San Carlos, the fictional Southern California city in which this episode is set, is also the name of a real California city in the San Francisco Bay Area.
Interestingly Raymond Burr and guest star Brian Donlevy have something in common, both appeared in edited versions of Japanese science fiction films. Burr, of course, was in Godzilla: King of the Monsters! (1956), which was edited from Godzilla (1954) , while Donlevy was in Gammera the Invincible (1966), which was edited from Gamera: The Giant Monster (1964).
This is the last of Ted de Corsia's 3 appearances on the series, he was the murder victim twice.
Bill Cannon refers to his camera store as a "pigeon drop" where people dropped off envelopes of money for George Emory, who set him up in business. That is not what a "pigeon drop " is. A "pigeon drop" is a confidence trick in which a con man pretends to find a package of money and convinces a victim to give him a smaller sum of money and hold the found money until he returns. He never returns and the money the victim is holding turns out to be newspaper -the package has been switched.