This is the first episode in which John Carter plays police Lieutenant John Biddle, a role he will play frequently for the rest of the series. He did play another role in an earlier episode, but it was not Lt. Biddle.
Portions of this episode were filmed in Lancaster, California and Woodland Hills, California.
Guest star Nancy Priddy's first of three appearances on Barnaby Jones. She is largely forgotten now and is best remembered for being the mother of Christina Applegate.
Robert Hogan plays a helicopter pilot. A few years later he plays another helicopter pilot in Smilin' Jack (1976).
Barnaby employs a bloodhound in his investigation. The dog was a rental as he doesn't have his own.