Directed by
| Jacques Tourneur | ||
Writing Credits
| Richard Goldstone | ||
| N. Gayle Gitterman | ||
Cast (in credits order)
| Pete Smith | ... | Narrator (voice) | |
| Rest of cast listed alphabetically: | |||
 |
Margaret Bert | ... | Nurse (uncredited) |
|
|
André Cheron | ... | Henri Antoine Becquerel (uncredited) |
|
|
James Conaty | ... | American Scientist (uncredited) |
| Eddie Hart | ... | Photographer (uncredited) | |
| Emmett Vogan | ... | Pierre Curie (uncredited) | |
Produced by
| Pete Smith | ... | producer (uncredited) |
