 The Return of the Man from U.N.C.L.E.: The Fifteen Years Later Affair1983 · Writer | Writer |
 Killjoy1981 · Writer | Writer |
 Relentless1977 · Writer | Writer |
 Enigma1977 · Writer, Producer | Writer, Producer |
 Rosetti and Ryan: Men Who Love Women1977 · Writer | Writer |
 Law of the Land1976 · Writer | Writer |
 Matt Helm1975 · Writer | Writer |
 This Is the West That Was1974 · Writer | Writer |
 Manhunter1974 · Writer | Writer |
 Climb an Angry Mountain1972 · Writer | Writer |
 The Delphi Bureau: The Merchant of Death Assignment1972 · Writer, Producer | Writer, Producer |
 Hardcase1972 · Writer | Writer |
 They Call It Murder1971 · Writer | Writer |
 The Mask of Sheba1970 · Writer, Producer | Writer, Producer |
 The Spy with My Face1965 · Producer | Producer |
 To Trap a Spy1965 · Writer | Writer |
 Pillars of the Sky1956 · Screenplay | Screenplay |
 Target Zero1955 · Writer | Writer |
 The McConnell Story1955 · Screenplay | Screenplay |
 The Naked Spur1953 · Writer | Writer |
