For his scenes with the lion, Patrick McGoohan had to walk with a piece of liver strapped to his ankle to attract the animal's interest.
The title "Nor the Moon by Night" comes from a passage in the Bible. "The sun shall not smite thee by day, nor the moon by night." Psalm 121:6
The main "stunt" lion was a tame one shipped out from Newcastle, England as the ones in the Kruger National Park were deemed to be dangerous to work with.
The film turned a profit in the United States, largely on the strength of its popularity at drive-in theaters.
Belinda Lee unexpectedly left the production halfway through to be with her Italian lover at the time. She was persuaded to return to complete the film.