Writing
Evolution
2001 · Screenplay
Arachnophobia
1990 · Screenplay
Vampires
1998 · Screenplay
Double Team
1997 · Screenplay
Lifeforce
1985 · Screenplay
Blue Thunder
1983 · Screenplay
Death Wish 3
1985 · Writer
The Philadelphia Experiment
1984 · Story
Invaders from Mars
1986 · Screenplay
1984 · Writer
Philadelphia Experiment II
1993 · Characters
