Demonoid

Erika Carlsson played the nurse as well as the topless possessed woman at the beginning of the film, even though she was only credited as Nurse Morgan. She holds the rare distinction of being killed twice as different characters in a single movie.

(around 33 min) The mine owners death a crew member or fire crew can be seen briefly crossing the burning hut from right to left.

A comparison between the US version and the Mexican version shows that both contain different footage. The face-crusher death scenes are more violent on the Media Home Entertainment version. The Mexican version has an alternate soundtrack, extended dialog scenes, cut scenes, alternate death scenes, and a slightly different ending. However, it is missing the first three minutes of the satanic cult chopping the girl's hand off.

Featured in Sneak Previews: Force: Five, Escape from New York, Gates of Heaven, On the Right Track, The Fox and the Hound (1981)