![all posters](http://image.pmgstatic.com/cache/resized/w140/files/images/film/posters/168/821/168821031_c0z9py.jpg)
Italy,
1972, 81 min
Directed by:
Leopoldo SavonaCinematography:
Giovanni CrisciComposer:
Vasili KojucharovCast:
Mark Damon, Claudia Gravy, Silvana Pompili, Marzia Damon, Bruna Beani, Carla Mancini, Aldo Bufi Landi, Franco Marletta, Fernando Cerulli, Franco Jamonte (more)Plots(1)
A boy is possessed by Byleth, the demon of the incest. He wants to madly love his sister, but his tragic end will be the natural epilogue of this morbid tale. (Severin Films)
Cast
![Mark Damon](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/165/431/165431404_45b6b9.jpg)
Mark Damon
USA
Best movies:
The Longest Day (1962)
The Reluctant Saint (1962)
House of Usher (1960)
Claudia Gravy
Best movies:
A Dog Called... Vengeance (1977)
Desert Warrior (1984)
Bad Man's River (1971)
Silvana Pompili
Best movies:
Byleth: The Demon of Incest (1972)
![Marzia Damon](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/158/741/158741741_263c88.jpg)
Marzia Damon
Best movies:
Evil Face (1974)
Lover of the Monster (1974)
Byleth: The Demon of Incest (1972)
Bruna Beani
Best movies:
I giorni della violenza (1967)
The Tormented (1974)
Byleth: The Demon of Incest (1972)
![Carla Mancini](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/158/634/158634528_01ed72.jpg)
Carla Mancini
Best movies:
Viva Italia! (1977)
Seven Beauties (1975)
Scent of a Woman (1974)
Aldo Bufi Landi
Italy
Best movies:
The Shortest Day (1963)
Zorro contro Maciste (1963)
Third Person (2013)
Franco Marletta
Best movies:
They Call Me Trinity (1970)
Investigation of a Citizen Above Suspicion (1970)
The Most Beautiful Wife (1970)
Fernando Cerulli
Italy
Best movies:
The Life of Verdi (1982) (series)
Life Is Tough, Eh Providence? (1972)
Caliber 9 (1972)
Franco Jamonte
Best movies:
Pirates of the Coast (1960)
Rosmunda e Alboino (1962)
Byleth: The Demon of Incest (1972)
Alessandro Perrella
Italy
Best movies:
Ludwig: The Mad King of Bavaria (1973)
The Driver's Seat (1974)
The Knock Out Cop (1973)