Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Três Homens em Conflito | 1966 | |
| Writer | Era uma Vez no Oeste | 1968 | |
| Writer | For a Few Dollars More | 1965 | |
| Writer | Duck, You Sucker | 1971 | |
| Writer | Raw Deal | 1986 | |
| Writer | Orca - A Baleia Assassina | 1977 | |
| Writer | Slap the Monster on Page One | 1972 | |
| Writer | Buddy goes West | 1981 | |
| Writer | The Big Gundown | 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 | The Sicilian Girl | 2008 | |
| Writer | Almost Blue | 2000 | |
| Writer | A Ilha dos Homens-Peixe | 1979 | |
| Writer | Face to Face | 1967 | |
| Writer | Casablanca, Casablanca | 1985 | |
| Writer | Holocaust 2000 | 1977 | |
| Writer | Holocaust 2000 | 1977 | |
| Writer | Tit for Tat | 1984 |