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Star Linda Blair says that the script kept getting re-written and that the film ended up not resembling the script for which she had originally signed. That included adding several nude scenes, including her topless shower scene. It was her first onscreen nudity and she didn't want to do it, but producers told her, "Well, if you don't do it, you're never gonna work again." So she gave in because she felt she had no choice.

Stella Stevens fell down for real in the scene in which she falls down and gets back up while running with Henry Silva.

Linda Blair's first onscreen nude scene. She said in an interview that after "Exorcist 2: The Heretic", she was unable to break free of the young-girl-as-victim role, so she attempted to revitalize her image. She wanted to show the world that she was a grown woman capable of adult roles, which is why she posed for full nude photos in the October 1982 issue of "Oui" magazine. Unfortunately, the photoshoot had an unintended consequence: Instead of big Hollywood pictures, Blair was only offered parts in exploitation and B-films like this one requiring her to get naked, or small television roles, for most of her career.

Linda Blair said that this and "Red Heat" (1985) almost ruined her career.

Sybil Danning said she ghost-directed and ghost-wrote all the best parts because director Paul Nicholas had almost no idea what he was doing.