Piranha II: The Spawning

1982 · Writer

Tentacles

1977 · Director

The Visitor

1979 · Writer

Beyond the Door

1974 · Director, Writer

Forever Emmanuelle

1976 · Writer

Madhouse

1981 · Director, Writer

Choke Canyon

1986 · Writer

Red Riding Hood

2003 · Writer

Desperate Moves

1980 · Director, Writer

Embryo: Beyond the Door

Writer

Out of Control

1992 · Director

Italy Possessed: A Brief History of Exorcist Rip-Offs

2020 · Acting

Beyond the Door: 35 Years Later

2009 · Acting

The Devil and I: Interview with Ovidio G. Assonitis

2020 · Acting

An Italian Irwin Allen - An Interview with Ovidio G. Assonitis

2023 · Acting