Lawman

(1971)

Writer

Chato's Land

(1972)

Writer

Scorpio

(1973)

Screenplay

The Stone Killer

(1973)

Screenplay

Death Wish

(1974)

Writer

Firepower

(1979)

Screenplay

Mr. Corbett's Ghost

(1987)

Writer

Under the Glacier

(1989)

Screenplay

The Diver

(2000)

Screenplay

Anita O'Day: The Life of a Jazz Singer

(2007)

Himself