Arthur Hill
Dr. Jeremy Stone
                                    David Wayne
Dr. Charles Dutton
                                    James Olson
Dr. Mark Hall
                                    Kate Reid
Dr. Ruth Leavitt
                                    Paula Kelly
Karen Anson
                                    George Mitchell
Jackson
                                    Ramon Bieri
Major Manchek
                                    Peter Hobbs
General Sparks
Kermit Murdock
Dr. Robertson
                                    Richard O'Brien
Grimes
                                    Eric Christmas
Senator from Vermont
Mark Jenkins
Lt. Shawn (Piedmont team)
                                    Peter Helm
Sgt. Crane (Piedmont team)
Joe Di Reda
Wildfire Computer Sgt. Burk
                                    Carl Reindel
Lt. Comroe
                                    Ken Swofford
Toby (technician)
                                    Frances Reid
Clara Dutton
                                    Richard Bull
Air Force Major
                                    John Carter
MP Capt. Morton
                                    Glenn Langan
Cabinet Secretary (uncredited)
Sandra de Bruin
Technician (uncredited)
                                    Susan Brown
Allison Stone (uncredited)
Bart La Rue
Medic Captain (uncredited)
                                    Walter Brooke
Assistant to Cabinet Secretary (uncredited)
                                    Jan Burrell
Mother - Piedmont (uncredited)
Dee Carroll
Technician (uncredited)
                                    Michael Crichton
Bearded Surgeon (uncredited)
                                    David McLean
Sen. McKenzie (uncredited)
                                    Emory Parnell
Pete 'Old Doughboy' Arnold (uncredited)
                                    Michael Pataki
Operator of 'The Hand' (uncredited)
                                    Quinn K. Redeker
Capt. Morris (uncredited)
                                    Garry Walberg
Technician (uncredited)
Len Wayland
Utah Crash Site Officer (uncredited)
Jason Johnson
Dr. Benedict (uncredited)
                                    Ivor Barry
Murray (uncredited)
                                    Lance Fuller
Man (uncredited)
                                    Don Messick
Alarm (voice) (uncredited)
Joan Swift
Decontamination Receptionist (uncredited)
Alma Platt
Woman (uncredited)
Paul Ballantyne
Hospital Director (uncredited)
Benjie Bancroft
Police Officer (uncredited)
Joe Billings
Scientist (uncredited)
Patty Bodeen
Girl (uncredited)
Michael Bow
MP at Stone's (uncredited)
Duke Cigrang
Father - Piedmont (uncredited)
Rhodie Cogan
Minor Role (uncredited)
                                    Lisa Daniels
Woman (uncredited)
Bill Dunbar
Vandenberg AFB Sergeant (uncredited)
Harold Dyrenforth
Minor Role (uncredited)
                                    Walker Edmiston
Voice (voice) (uncredited)
                                    Sandra Ego
Girl (uncredited)
Don Ellis
Minor Role (uncredited)
Judy Farrell
Pam (uncredited)
James W. Gavin
Dempsey - Helicopter Pilot (uncredited)
Sheila Jo Guthrie
Girl - Piedmont (uncredited)
Robert L. Hughes
Air Force Technician (uncredited)
Jamie Lamb
Boy - Piedmont (uncredited)
Johnny Lee
Boy (uncredited)
Theodore Lehmann
Scientist (uncredited)
Tom McDonough
Stetson (uncredited)
Cliff Medaugh
Civilian (uncredited)
                                    Victoria Paige Meyerink
Minor Role (uncredited)
                                    Midori
Bess - Lab Technician (uncredited)
Carl B. Morrison
Minor Role (uncredited)
Francisco Ortega
Gateman at Agricultural Center (uncredited)
Georgia Schmidt
Old Lady - Piedmont (uncredited)
Reuben Singer
Dr. Rudolph Karp (uncredited)
Gilchrist Stuart
Man (uncredited)
                                    Lorna Thayer
Woman (uncredited)
Gary Waynesmith
Air Force Technician (uncredited)
Russ Whiteman
Civilian (uncredited)
Le Mystère Andromède
Released
$ 6,500,000
$ 12,376,563