This was J.D. Cannon's last appearance on The FBI. He would later star in the 1970's crime show McCloud.
The car the kidnap victims are in is a Ford Fairlane. The interior changes from a black vinyl to a light brown checker pattern from act to act. Sometimes the interior changes from a view of the people in the front seat to the view of the people in the back seat in the same sequence.
The 1957 Ranchero (yellow/white) appears in the opening scene in Albany New York. The vehicle is later seen in Kiley Texas. Just a coincidence that it appears in the same places as the villain of the story?
Harley and his hostage grab a 1970 Ford Torino GT. A cool looking car of the early 1970's.
The suspect is a classic car buff with a 1914 Ford Model T and a 1940 Lincoln Continental convertible.
inspector Erskine's ride in the end credits is a white 1970 Ford Thunderbird 4-door sedan with a black top and a sunroof.
This same helicopter was used in the chase scenes for the movie "Vanishing Point" (1971)
Dawn Wells' co-star, Russell Johnson, appeared in an earlier FBI episode titled "Ceasar's Wife.
Inspector Lew Erskine goes undercover as a magazine writer. His alias is Lee Rogers.
This was the last appearance for British actor Michael Rennie.
The uniform appears to be correct except that the "Major" does not have a name tag on the uniform.
Continuity error: When Inspector Erskine and Agent Colby interviewed Mr. Post at a gas station he works at, they have a light blue 1968 Ford Galaxie 500 4-door sedan and when they go to interview Dan Scott from the information they obtained from Mr. Post, the car is a 1969 light blue Ford Galaxie 500 4-door sedan.
Susan Strasberg was the daughter of actor and founder of method acting classes founder Lee Strasberg.
In the end credits. Inspector Erskine drives a Gulfstream Aqua colored 1969 Ford Mustang Convertible in the end credits. This would be the last time he would drive a Ford Mustang or a convertible in the end credits.
Et Al is a Latin word for and others.
In the end credits. Inspector Erskine car is a bronze-colored 1968 Ford Mustang Convertible.
If you look very carefully, you will notice that the arsonist is driving a different Ford station wagon in several of the scenes. The car is the same color but the wheel covers are different! One wagon has a pie pan shaped wheelcover, the other has fake mag wheel type wheel covers!
(You have to be a true Ford fan of the 60's to catch this!)
In this episode. Inspector Erskine wears a patterned sport coat instead of his usual suit jacket.
In Act IV of this episode. Assistant Director Arthur Ward wears a fedora hat.
None of The mob members in this episode had Italian surnames.