Narrator (archive sound)
Rod Serling
Martin Sloan (archive footage)
Gig Young
Kanamit (archive footage)
Richard Kiel
Steve Brand (archive footage)
Claude Akins
Les Goodman (archive footage)
Barry Atwater
Charlie Farnsworth (archive footage)
Jack Weston
Mrs. Sloan (archive footage)
Irene Tedrow
Wilcox Boy (archive footage)
Ron Howard
Charlie (archive footage)
Byron Foulger
Mrs. Chester (archive footage)
Lela Bliss
Doctor (archive footage)
William D. Gordon
Janet's Nurse (archive footage)
Jennifer Howard
Robert Sloan (archive footage)
Frank Overton
Leader (archive footage)
George Keymas
Astronaut (archive footage)
Douglas Heyes
Citizen Gregori (archive footage)
Theo Marcuse
Secretary General (archive footage)
Hardie Albright
Tommy (archive footage)
Jan Handzlik
Don Martin (archive footage)
Burt Metcalfe
Sally (archive footage)
Mary Gregory
Wilcox (archive footage)
Bill Erwin
Mr. Wilson (archive footage)
Pat O'Malley
Myra Brand (archive footage)
Anne Barton
Henry Bemis (archive footage)
Burgess Meredith
Mrs. Goodman (archive footage)
Leah Waggner
Pete Van Horn (archive footage)
Ben Erway
Mrs. Farnsworth (archive footage)
Lyn Guild
Walter Smith (archive footage)
Edson Stroll
Janet Tyler (archive footage)
Donna Douglas
Scientist (archive footage)
Nelson Olmsted
Colonel #1 (archive footage)
Bartlett Robinson
Colonel #2 (archive footage)
Carleton Young
Senor Valdes (archive footage)
Robert Tafur
Leveque (archive footage)
Lomax Study
Mr. Carsville (archive footage)
Vaughn Taylor
Japanese Delegate (archive footage)
Jerry Fujikawa
Helen Bemis (archive footage)
Jacqueline deWit
Bandaged Janet Tyler (archive footage)
Maxine Stuart
Woman (archive footage)
Agnes Moorehead
Michael Chambers (archive footage)
Lloyd Bochner
Patty (archive footage)
Susan Cummings
Original Music Composer
Bernard Herrmann
Jerry Goldsmith
Producer
Writer
Leith Stevens
Director
Richard L. Bare
Richard Matheson
Buck Houghton
John Brahm
Sound
Franklin Milton
Charles Scheid
Editor
Joseph Gluck
Ron Winston
Jason H. Bernie
Robert Stevens
Bill Edmondson
Associate Producer
Del Reisman
Jean G. Valentino
Van Allen James
Bill Mosher
Leon Barsha
René Garriguenc