Discover
Richard Derr
David Randall
Barbara Rush
Joyce Hendron
Peter Hansen
Dr. Tony Drake
John Hoyt
Sydney Stanton
Larry Keating
Dr. Cole Hendron
Rachel Ames
Julie Cummings
Stephen Chase
Dr. George Frye
Frank Cady
Harold Ferris
Hayden Rorke
Dr. Emery Bronson
Sandro Giglio
Dr. Ottinger
Kirk Alyn
Rioter Bringing Guns (uncredited)
James Congdon
Eddie Garson (uncredited)
Gertrude Astor
Traveler (uncredited)
Robert Chapman
Student (uncredited)
Gene Collins
Newsdealer (uncredited)
Marcel De La Brosse
Headwaiter (uncredited)
Estelle Etterre
Traveler (uncredited)
Paul Frees
Narrator/U.S. President (voice)
Gay Nelson
Leda (uncredited)
Mary Murphy
Student
Art
Hal Pereira
Art Department Manager
Albert Nozaki
Art Department Assistant
Sam Comer
Set Decoration
Ross Dowd
Set Decoration
Editing
Arthur P. Schmidt
Editor
Production
George Pal
Producer
Sound
Leith Stevens
Original Music Composer
Gene Merritt
Sound Recordist
Walter Oberst
Sound Recordist
Art
Hal Pereira
Art Department Manager
Albert Nozaki
Art Department Assistant
Sam Comer
Set Decoration
Ross Dowd
Set Decoration
Editing
Arthur P. Schmidt
Editor
Production
George Pal
Producer
Sound
Leith Stevens
Original Music Composer
Gene Merritt
Sound Recordist
Walter Oberst
Sound Recordist