Trailer
Images
 | Richard Derr as David Randall |
 | Barbara Rush as Joyce Hendron |
 | Peter Hansen as Dr. Tony Drake |
 | John Hoyt as Sydney Stanton |
 | Larry Keating as Dr. Cole Hendron |
 | Rachel Ames as Julie Cummings |
 | Stephen Chase as Dr. George Frye |
 | Frank Cady as Harold Ferris |
 | Hayden Rorke as Dr. Emery Bronson |
 | Sandro Giglio as Dr. Ottinger |
 | Kirk Alyn as Rioter Bringing Guns (uncredited) |
 | James Congdon as Eddie Garson (uncredited) |
 | Gertrude Astor as Traveler (uncredited) |
 | Robert Chapman as Student (uncredited) |
| Gene Collins as Newsdealer (uncredited) |
| Marcel De La Brosse as Headwaiter (uncredited) |
 | Estelle Etterre as Traveler (uncredited) |
 | Paul Frees as Narrator/U.S. President (voice) |
| Gay Nelson as Leda (uncredited) |
| Edna Smith |
 | Mary Murphy as Student |
| Camera | |
| W. Howard Greene | Director of Photography |
Production | |
| George Pal | Producer |
Camera | |
| John F. Seitz | Director of Photography |
Directing | |
| Rudolph Maté | Director |
Writing | |
| Sydney Boehm | Screenplay |
Costume & Make-Up | |
| Wally Westmore | Makeup Artist |
Art | |
| Albert Nozaki | Art Department Assistant |
| Hal Pereira | Art Department Manager |
Sound | |
| Leith Stevens | Original Music Composer |
Editing | |
| Arthur P. Schmidt | Editor |
Costume & Make-Up | |
| Edith Head | Costume Design |
Art | |
| Sam Comer | Set Decoration |
Writing | |
| Edwin Balmer | Novel |
Art | |
| Ross Dowd | Set Decoration |
Writing | |
| Philip Wylie | Novel |
Directing | |
| Michael D. Moore | Assistant Director |
Sound | |
| Walter Oberst | Sound Recordist |
| Gene Merritt | Sound Recordist |
