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
- Writers
- Stars
- Floriana
- (as Silvana Pompili)
- Gisella
- (as Caterina Chiani)
- Dolores' Lover
- (uncredited)
- Dolores
- (uncredited)
- Director
- Writers
- All cast & crew
- Production, box office & more at IMDbPro
Featured reviews
Byleth..much better than i remembered
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.
Decidedly odd at times
Bizarre but beautiful cult oddity
Italian Gothic sleaze.
deserve to get a proper release
Did you know
- TriviaThe 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.
- ConnectionsFeatured in Death Falls Lightly (1972)
- How long is Byleth: The Demon of Incest?Powered by Alexa
Details
- Runtime
- 1h 23m(83 min)
- Sound mix
- Aspect ratio
- 1.85 : 1





