- Directed by Leopoldo Savona
- Starring Mark Damon, Claudia Gravy, Aldo Bufi Landi, Franco Jamonte
- Written by Leopoldo Savona
Byleth: The Demon of Incest (1972) -- The young Duke Lionello Shandwell (Mark Damon) morbidly loves his sister Barbara (Claudia Gravy). When he learns Barbara has married Giordano, a middle-aged man, his jealousy becomes explosive and attempts to separate the consorts in every way. In the meantime some mysterious crimes occur (victims are all women, killed with a three-point blade) and the entire village is stunned. Blood ceremonies, insane love and incestuous relationships are the dominant elements in this rarely seen film from Leopoldo Savona.
Byleth: The Demon of Incest DVD is offered as a compact edition. This transfer is manufactured on demand and is presented on premium DVD-R with thermal disc print in a clear plastic wallet. Important: This title has been manufactured from the best-quality video master (rated 9/10) currently available and has not been remastered or restored.