Michael Laskin (Arthur Kahn), Bernard Hocke (Security Guard), Rosemary Forsyth (Stephanie Kaplan), Ralph Tabakin (Elevator Attendant), Joseph Attanasio (Furillo), Wendy Bones (Pedestrian & Driver), Michael Chieffo (Stephen Chase), Darina Chylik (Maid), Jesse Dizon (Mohammed Jafar), David Drew Gallagher (Spencer Kaplan), Tim Earnheart (Background Extra), Faryn Einhorn (Eliza Sanders), Trevor Einhorn (Matt Sanders), Anne Flanagan (Secretary #1), Farrah Forke (Adele Lewyn), Stephen Hauser (Microphone Tester), Melanie Henderson (Garvin's Secretary), Lynne Killmeyer (Businesswoman), Suzie Plakson (Mary Anne Hunter), Rohana Razali (Malaysian Newscaster), Allan Rich (Ben Heller), Marie Rowe (Mrs. Ross), Nicholas Sadler (Don Cherry), Anneliza Scott (Secretary #2), Jack Shearer (Fred Price), Kim Tran (Chau-Minh), Lynn Tufeld (Lewyn's Assistant), Joe Urla (John Conley Jr), Kate Williamson (Judge Barbara Murphy), Nancy Yee (Cleaning Woman)

Paul Attanasio, Michael Crichton

Gregg Barbanell, Ricardo Broadus, Steve Cantamessa, Harry Cohen (II), David Farmer, Marc Fishman, William Freesh, Tim Gedemer, Paul Menichini, Vince Nicastro, Ann Scibelli, Cathie Speakman

Michael Crichton, Barry Levinson

Baltimore Pictures, Constant c Productions, Warner Bros., Warner Home Video