After this third feature length pilot movie, Universal finally commissioned a regular TV series.
In the original tv movie the OSI was called the OSO. Here the criminal organization is called OSO.
The part of this story where the memory of a dead man's was transferred to another person was directly borrowed from the book by Curt Siodmak and, later, the movie of the same name, "Hauser's Memory".
The footage of the United States Gold Depository, also known as Fort Knox, was taken on September 23, 1974. It was the first time the Depository was opened to the public and press since 1943 when President Franklin D. Roosevelt visited. Fort Knox has only been opened three times, the last was in 2017.