Dr. Susan Wheeler
Geneviève Bujold
Dr. Mark Bellows
Michael Douglas
Chief Resident
Michael MacRae
Kelly
Frank Downing
Computer Technician
Gary Barton
Nurse
Betty McGuire
Sean Murphy
Tom Selleck
Dr. Goodman
Charles Siebert
Lab Technician
William Wintersole
First Doctor
Ernest Anderson
Second Doctor
Harry Basch
Third Doctor
Maury Cooper
Mrs. Emerson
Elizabeth Ashley
Dance Instructor
Joni Palmer
Diane
Joanna Kerns
Sally
Kay Cole
Dr. Cowans
Tom Borut
Dr. Richards
Philip G. Brooks
Mr. Schwartz
Benny Rubin
Jimmy
David Hollander
1st Maintenance Man
Dick Balduzzi
2nd Maintenance Man
Gary Bisig
1st Cop
Kurt Andon
Dr. George
Rip Torn
2nd Cop
Wyatt Johnson
Security Man
Mike Lally
Norman
John Widlock
1st Man in Shower
Duane Tucker
2nd Man in Shower
Del Hinkley
1st Technician
Paul Ryan
2nd Technician
Michael Mann
Woman in Elevator
Sarina C. Grant
Man in Elevator
David McKnight
Anesthetist
Gerald Benston
Dr. Harris
Richard Widmark
Pathology Resident
Robert Burton
Ed Harris
Surgical Resident
Joe Bratcher
Martin Speer
Roger Newman
Paul Davidson
Amentha Dymally
Lois Walden
Sharron Frame
Sue Bugden
Nancy Greenly
Lois Chiles
Susie Luner
Jefferson Institute Security Guard (uncredited)
Vaughn Armstrong
Surgical Resident (uncredited)
Jason Bernard
Security Guard (uncredited)
Gerald Berns
Patient (uncredited)
Jeffrey Corazzini
Subway Passenger (uncredited)
Bob Dio
Doctor (uncredited)
Philip Baker Hall
Edward C. Higgins
Mary D. Mascari
Ambulance Driver (uncredited)
Gerry Vichi
Dr. Morelind
Hari Rhodes
Patterson Institute Chief of Security (uncredited)
Nicholas Worth
Jim
Richard Doyle
Dr. Marcus
Alan Haufrect
Vince
Lance LeGault
Original Music Composer
Jerry Goldsmith
Producer
Martin Erlichman
Director
Michael Crichton
Screenplay
Director of Photography
Victor J. Kemper
Novel
Robin Cook
Editor
David Bretherton
Casting
Sam Christensen
Joyce Robinson
Production Design
Albert Brenner
Set Decoration
Rick Simpson
Hairstylist
Carolyn Ferguson
Makeup Artist
Don Schoenfeld
Carrie White
Unit Production Manager
Phil Rawlins