Director Jack Hill asked that his name be removed from the credits for two reasons: (1) the special effects, around which much of the script had been written, ended up being much less impressive than producer Roger Corman had promised, and (2) Hill had written a role for his friend Sid Haig but Corman refused to hire him at the last minute.
Director Jack Hill claims that Dino De Laurentiis, who was filming Dune (1984) in the same studio, stole the movie's lighting equipment for his own production.
The name of the film was decided on when Roger Corman took a list of potential titles to a local high school and polled the students on which they preferred, even though the film didn't actually contain a sorceress.
During production, two days' worth of footage was destroyed by an explosion in the studio's film vault.
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