Alternative Versionen

Although the original UK cinema version was uncut this film was undeservedly caught up in the British video nasties hysteria in the early eighties, and consequently did not receive an official British video certificate until 1990. Illegally circulated copies of the film, followed by successful prosecutions under the Obscene Publications Act, forced the BBFC to edit 30 seconds from the movie with most cuts being made to the opening burning scene and a brief sequence of a bandaged patient being stabbed in the eye with a syringe. The BBFC fully waived all the edits for the 1999 Polygram video and all subsequent releases are fully uncut.

Even though the film was shown uncut on cinema in Sweden, a very unique decision back then due to the hard policy on violence, the Transfer rental VHS release is cut by several minutes.

The Finnish VHS version is heavily cut, probably in the same way as the Swedish cassette.

The end credit music is different on all video and the recent DVD release when compared to the theatrical and the HBO/Cinemax airing in the '80s. The theatrical and HBO had on the end credits the suspense music from the film, which then changes to a Glenn Miller jazz score, while the suspense music is heard in the background, creeping up faintly, until when the cast names start rolling, then the suspense music takes over, ending exactly when the credit ends. However, all video release of this, as well as the DVD, the end credit music is now the rehash of the beginning credit sequence music, you can tell its tacked in, for they fade the music early when the credit ends.