The Revolt of the Seven

(1964)

Writer

$100,000 for Ringo

(1965)

Screenplay

Django Shoots First

(1966)

Screenplay

Dirty Heroes

(1967)

Writer

Spy Pit

(1967)

Screenplay

Argoman the Fantastic Superman

(1967)

Writer

Eagles Over London

(1969)

Story and Screenplay

Carnal Circuit

(1969)

Story and Screenplay

The Man with Icy Eyes

(1971)

Writer

The Killer Is on the Phone

(1972)

Writer

Counselor at Crime

(1973)

Screenplay

High Crime

(1973)

Writer

Five Women for the Killer

(1974)

Screenplay

The Antichrist

(1974)

Writer

Hallucination Strip

(1975)

Screenplay

Syndicate Sadists

(1975)

Screenplay and Story

Violent Rome

(1975)

Story and Screenplay

Rome, the Other Face of Violence

(1976)

Story and Screenplay

Violent Naples

(1976)

Story and Screenplay

Shadows in an Empty Room

(1976)

Screenplay

A Special Cop in Action

(1976)

Screenplay and Story

Weapons of Death

(1977)

Screenplay

From Corleone to Brooklyn

(1979)

Screenplay

Hunted City

(1979)

Story

I'm for the Hippopotamus

(1979)

Screenplay

House on the Edge of the Park

(1980)

Writer

Desirable Teacher

(1981)

Story and Screenplay

The Last Shark

(1981)

Screenplay

I camionisti

(1982)

Writer

Desirable Teacher 2

(1982)

Story and Screenplay

The New York Ripper

(1982)

Screenplay and Story

Raiders of Atlantis

(1983)

Screenplay

Murder-Rock: Dancing Death

(1984)

Screenplay and Story

Formula for a Murder

(1985)

Writer

Miami Golem

(1985)

Screenplay

Cobra Mission

(1986)

Writer

Cobra Mission 2

(1988)

Writer

Phantom of Death

(1988)

Screenplay

The Sweet House of Horrors

(1989)

Screenplay

Panama Sugar

(1990)

Screenplay

The Last Match

(1990)

Writer

Arizona Road

(1991)

Writer

Phantom of Death

(1988)

Producer