Trailer
Cast
William Traylor
Party Guest (uncredited)
Eric Braeden
Dr Charles Forbin
Susan Clark
Dr. Cleo Markham
Marion Ross
Angela Fields
Sid McCoy
Secretary of Defense
Robert Cornthwaite
First Scientist
Tom Basham
Thomas L. Harrison
Paul Frees
Colossus (voice) (uncredited)
Robert Quarry
Scientist (uncredited)
Gordon Pinsent
The President
William Schallert
CIA Director Grauber
Georg Stanford Brown
Dr. John F. Fisher
Martin E. Brooks
Dr. Jefferson J. Johnson
Don Ross
Logan US Air Force (uncredited)
Willard Sage
Dr. Blake
Alex Rodine
Dr. Kuprin
Dolph Sweet
Missile Commander
Byron Morrow
Secretary of State
James Hong
Dr. Chin