CONTAINS SOME SPOILERS
As a horror title, you'd think The Demon would be pretty self-explanatory: it's about a demon, in exactly the same way that The Exorcist is about an exorcist and Earthquake is about an earthquake. Except that it isn't: it's about a serial killer who may be many things but doesn't appear to be actually demonic (if it weren't for a couple of moments where he might at least have some kind of teleporting abilities). Worse: if we're looking at truth in movie titles this wouldn't just be called The Serial Killer, it would have to be The Boring Serial Killer. Years ago The Demon was listed in the still-missed zine Shock Xpress as one of the 50 most boring films ever made and it's pretty safe to say that this one does earn its place, because in addition to being more about a serial killer than about a demon, it's even moreso a film about the love lives of a couple of hot primary school teachers while a maniac with a spiked glove occasionally mooches about abducting people for no adequately explored reason.
Far too much of the 1981 film is devoted to this tedious slop in which one of the two girls (they're also cousins) tames the casual lusts of a playboy while the other has a serious relationship with a guy you'd think would turn out to save the day as the hero but doesn't. Their soap opera blather goes on for so long you forget the mad killer is even in it; he's reduced to a walk-on extra role in what is supposedly his own movie. Meanwhile Cameron Mitchell turns up as a psychic who eventually tracks down the killer in his drawings but then gets inexplicably murdered.
It's incredibly dull and the UK DVD has lousy picture quality, though even on a remastered 4K ultra hi-def Blu sourced from the original pristine 35mm master from the vaults it would still be incredibly dull. As it is, the occasional bursts of entirely unnecessary sex and nudity are blurred and indistinct and the murders, which tend to take place is the dark anyway, are just lost in the visual murk. Made in South Africa.