A polling at Classic Jonny Quest.com ranked this episode #1 among fan favorites.
Originally, the series began with John Stephenson as the voice of Dr. Quest till it was felt his was too much like that of Mike Road's for Race. This is the only Jonny Quest episode to feature John Stephenson's voice after he discontinued playing Dr. Quest.
The invisible monster in this story is very similar to the invisible "monster from the Id " in the movie "Forbidden Planet".
A close-up on Race's jet pack shows four switch settings marked "Off On Hi Rev." Since there is no practical application for a reverse setting on a jet pack, the last setting must mean "revved up" (something higher than high) - or was possibly just a joke by the creators.