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Les démons sexuels

Original title: Byleth (Il demone dell'incesto)
  • 1972
  • Not Rated
  • 1h 23m
IMDb RATING
4.8/10
588
YOUR RATING
Les démons sexuels (1972)
DramaHorror

A man who's been in love with his sister since childhood returns after a year's absence to find she has married. Soon, several women in the area start turning up dead with strange wounds on ... Read allA man who's been in love with his sister since childhood returns after a year's absence to find she has married. Soon, several women in the area start turning up dead with strange wounds on their necks.A man who's been in love with his sister since childhood returns after a year's absence to find she has married. Soon, several women in the area start turning up dead with strange wounds on their necks.

  • Director
    • Leopoldo Savona
  • Writers
    • Norbert Blake
    • Leopoldo Savona
  • Stars
    • Mark Damon
    • Claudia Gravy
    • Aldo Bufi Landi
  • See production info at IMDbPro
  • IMDb RATING
    4.8/10
    588
    YOUR RATING
    • Director
      • Leopoldo Savona
    • Writers
      • Norbert Blake
      • Leopoldo Savona
    • Stars
      • Mark Damon
      • Claudia Gravy
      • Aldo Bufi Landi
    • 13User reviews
    • 22Critic reviews
  • See production info at IMDbPro
  • See production info at IMDbPro
  • Photos22

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    Top cast15

    Edit
    Mark Damon
    Mark Damon
    • Duke Lionello
    Claudia Gravy
    Claudia Gravy
    • Barbara
    Aldo Bufi Landi
    • Giordano
    Franco Jamonte
    • The Judge
    Alessandro Perrella
    • Magistrate
    Fernando Cerulli
    Fernando Cerulli
    • Doctor
    Silvana Panfili
    • Floriana
    • (as Silvana Pompili)
    Marzia Damon
    Marzia Damon
    • Gisella
    • (as Caterina Chiani)
    Franco Marletta
    Franco Marletta
    • Dario
    Antonio Anelli
    • Father Clemente
    Carla Mancini
    Carla Mancini
    Tony Denton
    Bruna Beani
    Bruna Beani
      Florian Endlicher
      • Dolores' Lover
      • (uncredited)
      Karin Lorson
      • Dolores
      • (uncredited)
      • Director
        • Leopoldo Savona
      • Writers
        • Norbert Blake
        • Leopoldo Savona
      • All cast & crew
      • Production, box office & more at IMDbPro

      User reviews13

      4.8588
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      Featured reviews

      7gorytus-20672

      Byleth..much better than i remembered

      Aug 21

      I have just got to see Byleth for only the 2nd time, a few years after the first viewing and i was pleasantly surprised how much i enjoyed it.

      Italian gothic type horror starring Mark Damon and Claudia Gravy, well worth finding out.

      I was slightly disappointed with the abrupt ending and a couple of times there appeared to be little flashback scenes will no explanation as to why and who the women were supposed to be.

      On the whole pretty decent.

      7.5 out of 10.
      6The_Void

      Bizarre but beautiful cult oddity

      This strange cult oddity has been all but forgotten since its release in 1972, and I'm not really surprised at that - as while it certainly is a film with some merit, it's also really bizarre and I have no idea who the target audience might be. The name of the title is a demon, who apparently also happens to be the king of hell and who can curse a man to live in incest. Lionello is a man who has been punished by the demon and thus lusts after his own sister; which is not good news for her husband Giordano. If I had to liken this film to other films I've seen, I'd put it in with the likes of Valerie and Her Weekend of Wonders and The Reincarnation of Isabel as all these films are low on plots but high on weird goings on that don't always make a great deal of sense. This film does not benefit from a constantly intriguing narrative but there is usually just about enough going on to ensure that the film doesn't become boring. Director Leopoldo Savona creates a good style for the film and it does look very nice indeed. The film benefits from a handful of beautiful women who don't seem to mind taking their clothes off, which is also nice and care is taken with the locations also. It soon becomes apparent that the plot is not really all that important; but it is at least worthwhile and the script does bother to tie things up at the end. Overall, this is a decent if strange watch and while I wouldn't recommend anyone goes out of their way to find it; it is at least worth seeing.
      5BA_Harrison

      Not as sleazy as it sounds.

      Countess Barbara (Claudia Gravy) returns home after a year of gallivanting around Europe, much to the delight of lovestruck Duke Lionello Shandwell (Mark Damon, who looks like a cross between Doug McClure and Martin Landau). A couple of problems: 1) she announces that she has got married, and 2) Lionello is her brother (Barbara is a total babe, but that's no excuse). Jealous Lionello proceeds to spy on his sister and her new husband Giordano (Aldo Bufi Landi), including when the couple are making love; meanwhile, a mysterious figure is killing local women with a three bladed weapon. Giordano comes to suspect that Lionello is possessed by the demon Byleth, who causes its victims to kill and live in incest.

      Byleth: The Demon of Incest features plenty of nudity and sex, with some very attractive actresses revealing all for their art, but despite the film's salacious title, it really isn't all that depraved. Shame. With a little more deviancy and a lot more gore (the murders are extremely tame, with just a few trickles of blood), this could have been a classic of Italian sleaze, but as it stand. it's actually surprisingly bland, nothing much of interest happening between the soft-core romps and lacklustre deaths.

      The incest angle finally comes into fruition moments before the end, when Lionello gives in to his urges and Barbara willingly obliges (he's possessed by a demon... what's her excuse?), but the sex is only suggested (keeping it 'tasteful'). Lionello wakes to discover Barbara dead, three wounds on her neck, and goes in search of Byleth for revenge, leading to a rather confusing climax in which the demon appears, looking like Lionello in drag-queen make-up. As erotic gothic Euro-horrors go, this one is merely run-of-the-mill, not nearly as controversial or taboo-busting as the title suggests.
      7HumanoidOfFlesh

      Italian Gothic sleaze.

      A young man possessed by the demon spirit of incest since he was a boy is morbidly in love with his sister.Toss in some female victims,all killed naked with a three-points blade and the fact that this was the first time incest themes were documented in an Italian horror film this way and you have sleazy winner.So I finally watched X-Rated Cult DVD of "Byleth" and I must say that I enjoyed this Gothic mood piece.Strange and atmospheric little horror film that is beautifully shot and has a great score.There is plenty of atmosphere until the climax,which is a big disappointment.Plenty of soft-core sex and full-frontal nudity kept me constantly interested.7 out of 10.
      6trashgang

      deserve to get a proper release

      Hunting after OOP and rare horrors I fell on this one. But I had to be sure that it had some subs because it's an Italian movie. A lot of copies are available but most of them are in Italian without subs. But you really need those subs to understand the movie. The only label that has it with subs is the X Rated Kult release. I know, you pay a lot more than the price for a copy but what you'll get is a uncut version with English subs and a real nice hard box with beautiful art. The only problem I have is were to catalogue this flick. There is no real horror in it, there is almost 1 minute of blood in it and that part is just filled with some blood drops. Further on it's all about demons but when the demon appears it has a human face. Really something to say, this is crap but somehow the movie doesn't fail to keep you attracted to the end. It's a bit weird, I wont spoil it to tell that it's all about incest between brother and sister. From there on things got worser. It really never frightens or deliver you the shivers but somehow it got me. It wouldn't be Italian without a lot of nudity included. Not being a real Giallo freak, wouldn't say this one is, this one got my attention; it's out there and just like the demon Byleth, you will have to search the net to find the X Rated version, for the moment it is still available but be aware with X Rated, once it becomes OOP the prices go up and up...

      Related interests

      Mahershala Ali and Alex R. Hibbert in Moonlight (2016)
      Drama
      Mia Farrow in Rosemary's Baby (1968)
      Horror

      Storyline

      Edit

      Did you know

      Edit
      • Trivia
        The picture of the woman and killer on the poster is the same one used on "Sex of the Witch".
      • Quotes

        Duke Lionello: Why did you write me those letters when you were in love with someone else? Don't you remember our promise? We wanted to stay together forever.

        Barbara: We are not children anymore. We are adults. Brother and sister can't get married.

      • Connections
        Featured in La mort tombe doucement (1972)

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      FAQ13

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      Details

      Edit
      • Release date
        • May 31, 1972 (Italy)
      • Country of origin
        • Italy
      • Language
        • Italian
      • Also known as
        • Byleth: The Demon of Incest
      • Filming locations
        • Elios Film, Rome, Lazio, Italy(Studio)
      • Production company
        • Agata Film
      • See more company credits at IMDbPro

      Tech specs

      Edit
      • Runtime
        • 1h 23m(83 min)
      • Sound mix
        • Mono
      • Aspect ratio
        • 1.85 : 1

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