Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | The Amityville Horror | 2005 | |
| Writer | Huset Som Gud Glömde | 1979 | |
| Director | Amityville: The Evil Escapes | 1989 | |
| Writer | Amityville: The Evil Escapes | 1989 | |
| Writer | Amityville: The Evil Escapes | 1989 | |
| Producer | Amityville: The Evil Escapes | 1989 | |
| Director | Pin | 1988 | |
| Writer | Pin | 1988 | |
| Director | The Stranger Beside Me | 1995 |