Scenarist
- It's Alive (2008)
- Captivity (2007)
- Phone Booth (2002)
- As Good as Dead (1995)
- Guilty as Sin (1993)
- Maniac Cop 3: Badge of Silence (1993)
- The Ambulance (1990)
- Best Seller (1987)
- The Stuff (1985)
- The Private Files of J. Edgar Hoover (1977)
- It's Alive (1974)
- Hell Up in Harlem (1973)
- Black Caesar (1973)
- Return of the Seven (1966)
Filmografie - altele
