Nato/a il August 29, 1935 · Chicago, Illinois, USA
Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Director | L'esorcista | 1973 | |
| Director | La parola ai giurati | 1997 | |
| Director | Il braccio violento della legge | 1971 | |
| Director | Killer Joe | 2011 | |
| Director | The hunted - La preda | 2003 | |
| Director | Cruising | 1980 | |
| Writer | Cruising | 1980 | |
| Producer | Luna di carta | 1973 | |
| Director | Il salario della paura | 1977 | |
| Director | Regole d'onore | 2000 | |
| Director | Vivere e morire a Los Angeles | 1985 | |
| Writer | Vivere e morire a Los Angeles | 1985 | |
| Director | Bug - La paranoia è contagiosa | 2006 | |
| Director | Basta vincere | 1994 | |
| Director | Festa per il compleanno del caro amico Harold | 1970 | |
| Actor | The Devil and Father Amorth | 2018 | |
| Director | The Devil and Father Amorth | 2018 | |
| Writer | The Devil and Father Amorth | 2018 | |
| Director | Jade | 1995 | |
| Director | L'albero del male | 1990 | |
| Writer | L'albero del male | 1990 | |
| Actor | The Fear of God: 25 Years of The Exorcist | 1998 | Himself |
| Director | L'affare del secolo | 1983 | |
| Actor | Leap of Faith: William Friedkin on The Exorcist | 2019 | William Friedkin |
| Director | Assassino senza colpa? | 1987 | |
| Writer | Assassino senza colpa? | 1987 | |
| Producer | Assassino senza colpa? | 1987 | |
| Director | Pollice da scasso | 1978 | |
| Actor | Fellini degli spiriti | 2020 | William Friedkin |