Don Gordon and Simon Oakland were reunited in Bullitt (1968), where Simon Oakland would play the role of 'captain' (Captain Samuel Bennett) and Don Gordon would play the part of Sergeant Delgetti.
The Empyrian facial prosthetic worn by Simon Oakland in this episode was later worn, with an added beak, by Janos Prohaska as the humanoid bird creature in The Cage (1966).
When this episode was originally aired, the title was "Joy Ride."
Joseph Stefano had earlier recommended that Simon Oakland play the part of the psychiatrist in Psycho (1960), and later asked him if he'd like to appear on The Outer Limits. Oakland said yes, but only if he could play the monster.