阿瑟·希尔
Arthur Hill
饰：Dr. Jeremy Stone
大卫·韦恩
David Wayne
饰：Dr. Charles Dutton
詹姆斯·奥尔森
James Olson
饰：Dr. Mark Hall
凯特·瑞德
Daphne Kate Reid
饰：Dr. Ruth Leavitt
George Mitchell
饰：Jackson
拉蒙·比厄里
Ramon Bieri
饰：Maj. Manchek
彼得·霍布斯
Peter Hobbs
饰：Gen. Sparks
Richard O'Brien
饰：Grimes
埃里克·克里斯马斯
Eric Christmas
饰：Senator from Vermont
Peter Helm
饰：Sgt. Crane (Piedmont team)
Carl Reindel
饰：Lt. Comroe
根·斯沃福德
Ken Swofford
饰：Toby (technician)
弗朗西丝·瑞德
Frances Reid
饰：Clara Dutton
理查德·布尔
Richard Bull
饰：Air Force major
John Carter
饰：MP Capt. Morton
沃尔特·布鲁克
Walter Brooke
饰：Assistant to Cabinet Secretary (uncredited)
Jan Burrell
饰：Mother (Piedmont) (uncredited)
Dee Carroll
饰：Technician (uncredited)
迈克尔·克莱顿
Michael Crichton
饰：Bearded surgeon (uncredited)
丽莎·丹尼尔斯
Lisa Daniels
饰：Woman (uncredited)
Walker Edmiston
饰：Voice (uncredited)
兰斯·富勒
Lance Fuller
饰：Man (uncredited)
James W. Gavin
饰：Dempsey (helicopter pilot) (uncredited)
Tom McDonough
Tom McDonough
饰：Stetson (uncredited)
David McLean
饰：Sen. McKenzie (New Mexico) (uncredited)
Emory Parnell
饰：Pete 'Old Doughboy' Arnold (uncredited)
迈克尔·帕塔奇
Michael Pataki
饰：Operator of 'The Hands' (uncredited)
福特·雷尼
Ford Rainey
饰：Bit part (uncredited)
奎因·K·雷德克
Quinn K. Redeker
饰：Capt. Morris (uncredited)
Reuben Singer
饰：Dr. Rudolph Karp (uncredited)
Robert Soto
饰：Manuel Rios (the baby) (uncredited)
Gil Stuart
Gil Stuart
饰：Man (uncredited)
洛娜·塞耶
Lorna Thayer
饰：Woman (uncredited)
Garry Walberg
饰：Technician (uncredited)
Russ Whiteman
饰：Civilian (uncredited)
保拉·凯利
Paula Kelly
饰：Karen Anson
Kermit Murdock
饰：Dr. Robertson
Mark Jenkins
饰：Lt. Shawn (Piedmont team)
乔·迪雷达
Joe Di Reda
饰：Wildfire Computer Sgt. Burk (as Joe DiReda)
Harold Dyrenforth
Harold Dyrenforth
饰：(as Dr. Haraold O. Dyrenforth)
Paul Ballantyne
饰：Hospital director (uncredited)
艾弗·巴里
Ivor Barry
饰：Murray (uncredited)
Joe Billings
饰：Scientist (uncredited)
Michael Bow
Michael Bow
饰：MP at Stone's (uncredited)
苏珊·布朗
Susan Brown
饰：Allison Stone (uncredited)
Duke Cigrang
饰：Father (Piedmont) (uncredited)
桑德拉·德·布鲁茵
Sandra de Bruin
饰：Technician (uncredited)
Bill Dunbar
饰：Vandenberg AFB sergeant (uncredited)
Judy Farrell
饰：Pam (uncredited)
Ray Harris
饰：Scientist (uncredited)
Rob Hughes
饰：Air Force technician (uncredited)
Jason Johnson
饰：Dr. Benedict (uncredited)
格伦·兰甘
Glenn Langan
饰：Cabinet Secretary (uncredited)
巴特·拉鲁
Bart La Rue
饰：Medic captain (uncredited)
Johnny Lee
饰：Boy (uncredited)
Theodore Lehmann
饰：Scientist (uncredited)
Cliff Medaugh
饰：Civilian (uncredited)
Victoria Paige Meyerink
Victoria Paige Meyerink
饰：(uncredited)
Midori
饰：Bess (lab technician) (uncredited)
Francisco Ortega
饰：Gateman at Agricultural Center (uncredited)
Alma Platt
饰：Woman (uncredited)
Georgia Schmidt
饰：Old lady (Piedmont) (uncredited)
Joan Swift
饰：Decontamination receptionist (uncredited)
Len Wayland
饰：Utah crash site officer (uncredited)
Gary Waynesmith
Gary Waynesmith
饰：Air Force technician (uncredited)
Patty Bodeen
饰：Girl (uncredited)
Rhodie Cogan
饰：Minor Role (uncredited)
Sandra Ego
饰：Girl (uncredited)
Don Ellis
饰：Minor Role (uncredited)
Sheila Jo Guthrie
饰：Girl - Piedmont (uncredited)
Jamie Lamb
饰：Boy - Piedmont (uncredited)
Carl B. Morrison
饰：Minor Role (uncredited)
Bob Olen
饰：Soldier (uncredited)
Clark Savage
饰：M.P. Sergeant (uncredited)