Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Le Bon, la Brute et le Truand | 1966 | |
| Writer | Il était une fois dans l'Ouest | 1968 | |
| Writer | Et pour quelques dollars de plus | 1965 | |
| Writer | Il était une fois la Révolution | 1971 | |
| Writer | Le contrat | 1986 | |
| Writer | Orca | 1977 | |
| Writer | Viol en première page | 1972 | |
| Writer | On m'appelle Malabar | 1981 | |
| Writer | Colorado | 1966 | |
| Writer | Man on Fire | 1987 | |
| Writer | Count Tacchia | 1982 | |
| Writer | Count Tacchia | 1982 | |
| Writer | The Little Lord | 1996 | |
| Writer | Bonnie and Clyde Italian Style | 1983 | |
| Writer | La Sicilienne | 2008 | |
| Writer | Almost Blue | 2000 | |
| Writer | Le Continent des hommes-poissons | 1979 | |
| Writer | Le Dernier face à face | 1967 | |
| Writer | Casablanca, Casablanca | 1985 | |
| Writer | Holocauste 2000 | 1977 | |
| Writer | Holocauste 2000 | 1977 | |
| Writer | Tit for Tat | 1984 |