Three men gamble their lives in space to change the history of the world
William Lundigan
Dr. Richard Donald Stanton
Herbert Marshall
Dr. Donald L. Stanton / Narrator
Richard Carlson
Dr. Jerry Lockwood
Martha Hyer
Dr. Jane Flynn
Dawn Addams
Susan Manners
Robert Karnes
Walter Gordon
Lawrence Dobkin
Dr. Delmar
George Eldredge
Dr. Paul Dryden
Dan Riss
Dr. Frank Werner
Michael Fox
Dr. Klinger
King Donovan
James O'Herli
Kem Dibbs
David Wells
James Best
Dr. Sidney K. Fuller
Director
Curt Siodmak
Screenplay
Ivan Tors
Producer
Herbert L. Strock
Associate Producer
Harry Sukman
Original Music Composer
Stanley Cortez
Director of Photography
Jerome Pycha Jr.
Art Direction
Victor A. Gangelin
Set Decoration
Louis Phillipi
Makeup Artist
Story
Editor
