I've three VHS copies from different distributors, and two suffer from poor resolution, with the washed-out colors of 16mm TV station prints. This is especially true of Simitar's EP speed. This is not entirely a bad thing. In Fragments of Fear: An Illustrated History of British Horror Films, Andy Boot writes: "photographer Peter Newbrook is a skilled man, but the quality of film stock he gets looks like super-8 blown up at times. But perversely this only adds to the strange feel of a film that seems to work by default." Boot is right. The film's faded visuals (and muddy audio and rough editing) curiously enhance its surreal oddness and stifling claustrophobia. I used to wonder how much of it was intentional, or ineptitude, or censorial editing. Because it works ... sort of.

However, I now think that Boot saw a VHS version, because the DVD is a wholly different and superior experience. The DVD film is ten minutes longer, incorporating scenes that have been lost over the years. These scenes answer crucial questions left hanging in the VHS version, such as the fate of Dorothy. The DVD also corrects the "poor resolution" and "washed-out colors" of the VHS, creating a significantly different aesthetic experience. These additional scenes and sharper visuals yield a film that's clearer both visually and storywise. That "strange feel" Andy Boot refers to lessened, as the DVD no longer looks like "super-8 blown up." If you've only seen Crucible of Terror on VHS, you haven't really seen it.

Mike Raven's tall large frame and booming DJ voice make him an imposing villain. It's easy to see why Victor intimidates and/or dominates others. Mary Maude's timid Millie ironically resembles Theresa, Maude's victim in The House That Screamed.

Crucible of Terror is not to be confused with another British horror film, Crucible of Horror.