Byleth: The Demon of Incest (1972)
A young man becomes obsessed with Byleth, the demon of incest, and it leads to an unhealthy infatuation with his sister.
- Country : Italy
- Genre : Drama, Horror
- Studio : Agata Film
- Director : Leopoldo Savona
- Cast : Mark Damon, Claudia Gravy, Aldo Bufi Landi, Fernando Cerulli, Silvana Pompili, Marzia Damon