Trailer
Cast
Donald Pleasence
Dr. Michaels
Arthur O'Connell
Col. Donald Reid
Kenneth MacDonald
Henry - Heart Monitoring (uncredited)
Raquel Welch
Cora
Jean Del Val
Jan Benes
Barry Coe
Communications Aide
Edmond O'Brien
General Carter
William Redfield
Capt. Bill Owens
Arthur Kennedy
Dr. Duval
Ken Scott
Secret Service
James Doohan
Dr. Sawyer (Hypothermia technician) (uncredited)
Christopher Riordan
Young Scientist (uncredited)
Stephen Boyd
Grant
Shelby Grant
Nurse
James Brolin
Technician
Brendon Boone
Military Policeman (uncredited)