Director/a
Lester Wm. Berke
DIRECTOR/A
William Berke
Reparto (por orden de créditos)
Robert Loggia
Dr. David Loring
Ellen Parker
Joan Wood
Phillip Pine
Dr. Joe Freed
Larry Kerr
General Barr
Marilee Earle
Ella Freed
Fred Engelberg
TV Singer
Kitty Kelly
Mama - Ella's Mother
Selmer Jackson
Secretary of State
Hari Rhodes
Black Man at Piano
Shirley J. Shawn
Black Woman by Piano
J. Anthony Hughes
Governor of New York
Robert Busch
ACTOR
Jack Holland
Harold
John McNamara
Civil Aeronautics Board Officer
Mike Steele
CONAD 3-Star General
Cecil Elliott
Harold's Wife
Viola Harris
Don Pethley
Myron Cook
Mark Dunhill
Joe Hyams
Young - Reporter
Bill Bradley
Lawrence Dobkin
Narrator(voice)
Chet Brandenburg
Worker(uncredited)
John Daheim
Man with Dog Sled Team(uncredited)
John Damler
Guard at Institute(uncredited)
Stanley Fafara
Boy on Evacuation School Bus(uncredited)
Kam Fong
Chinese Officer(uncredited)
Kenneth Gibson
Reporter(uncredited)
Gina Gillespie
Little Girl in Underground Bunker(uncredited)
Shep Houghton
Thomas E. Jackson
New York State Broadcaster(uncredited)
Jason Johnson
Soviet Officer(uncredited)
Kenner G. Kemp
Harold Miller
Joint Chiefs of Staff Officer(uncredited)
Hans Moebus
Tom Monroe
Bus Driver(uncredited)
Frances Morris
Joe's Wife(uncredited)
William H. O'Brien
Scientist at Institute(uncredited)
Monty O'Grady
Aide(uncredited)
Murray Pollack
Anthony Redondo
Cosmo Sardo
Pentagon Broadcaster(uncredited)
Robert Shayne
Air Force General(uncredited)
Stephanie Shayne
Sandra(uncredited)
Olan Soule
TV Floor Director(uncredited)
Ted Stanhope
Aide to Secretary of State(uncredited)
Bert Stevens
Arthur Tovey