Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Der Pate | 1972 | |
| Writer | Der Pate - Teil III | 1990 | |
| Writer | Superman - der Film | 1978 | |
| Writer | Superman II - Allein gegen alle | 1980 | |
| Writer | Erdbeben | 1974 |
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Der Pate | 1972 | |
| Writer | Der Pate - Teil III | 1990 | |
| Writer | Superman - der Film | 1978 | |
| Writer | Superman II - Allein gegen alle | 1980 | |
| Writer | Erdbeben | 1974 |