Scriitor
- Mosca addio (1987)
- The Fifth Missile (1986)
- One Shoe Makes It Murder (1982)
- Chicago Story (1981)
- Top of the Hill (1980)
- Flesh & Blood (1979)
- Hunters of the Reef (1978)
- Take a Hard Ride (1975)
- The Log of the Black Pearl (1975)
- Three the Hard Way (1974)
- Strange Homecoming (1974)
- Wheeler and Murdoch (1973)
- The Culpepper Cattle Co. (1972)
- Assignment: Munich (1972)
- The Deadly Hunt (1971)
- The Other Man (1970)
- Day of the Evil Gun (1968)
- Square of Violence (1963)
- La città prigioniera (1962)
Filmografie - altele
