| Le Retour des sept | 1966 | Screenplay |
| I Deal In Danger | 1966 | Writer |
| Scream Baby Scream | 1969 | Screenplay |
| Daddy's Gone A-Hunting | 1969 | Screenplay |
| El Condor | 1970 | Screenplay |
| Bone | 1972 | Writer |
| Bone | 1972 | Producer |
| Black Cesar, le parrain de Harlem | 1973 | Writer |
| Black Cesar, le parrain de Harlem | 1973 | Producer |
| Casse dans la ville | 1973 | Screenplay |
| Casse dans la ville | 1973 | Producer |
| Le monstre est vivant | 1974 | Writer |
| Le monstre est vivant | 1974 | Producer |
| Meurtres sous contrôle | 1976 | Screenplay |
| Meurtres sous contrôle | 1976 | Producer |
| Calling Doctor Storm, M.D. | 1977 | Writer |
| The Private Files of J. Edgar Hoover | 1977 | Writer |
| The Private Files of J. Edgar Hoover | 1977 | Producer |
| Les Monstres sont toujours vivants | 1978 | Writer |
| Les Monstres sont toujours vivants | 1978 | Producer |
| The American Success Company | 1980 | Screenplay |
| Full Moon High | 1981 | Screenplay |
| Full Moon High | 1981 | Producer |
| J'aurai ta peau | 1982 | Screenplay |
| Épouvante sur New-York | 1982 | Writer |
| Épouvante sur New-York | 1982 | Producer |
| Perfect Strangers | 1984 | Writer |
| Special Effects | 1984 | Writer |
| The Stuff | 1985 | Writer |
| The Stuff | 1985 | Executive Producer |
| La Vengeance des monstres | 1987 | Screenplay |
| La Vengeance des monstres | 1987 | Executive Producer |
| Les Enfants de Salem | 1987 | Executive Producer |
| Les Enfants de Salem | 1987 | Screenplay |
| Pacte avec un tueur | 1987 | Writer |
| Homicide à Wall Street | 1987 | Writer |
| Maniac Cop | 1988 | Producer |
| Maniac Cop | 1988 | Writer |
| Desperado: Avalanche at Devil's Ridge | 1988 | Writer |
| Ma Belle-mère est une sorcière | 1989 | Writer |
| Ma Belle-mère est une sorcière | 1989 | Executive Producer |
| L'ambulance | 1990 | Writer |
| Maniac Cop 2 | 1990 | Writer |
| Maniac Cop 2 | 1990 | Producer |
| Maniac cop 3 | 1992 | Writer |
| L'Avocat du diable | 1993 | Writer |
| The Expert | 1995 | Writer |
| Uncle Sam | 1996 | Writer |
| Piège intime | 1996 | Writer |
| The Ex | 1996 | Screenplay |
| Misbegotten | 1998 | Screenplay |
| Phone Game | 2003 | Screenplay |
| Captivity | 2007 | Writer |
| It's Alive | 2009 | Screenplay |
| La Mort au bout du fil | 2010 | Writer |
