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John Nesbitt as Narrator (voice) |
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Stephen McNally as Dr. Christiaan Eijkman |
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Dorothy Morris as Secretary (uncredited) |
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Emmett Vogan as Scientist (uncredited) |
| Directing | Jacques Tourneur | Director |
| Production | John Nesbitt | Producer |
| Writing | Robert Lopez | Story |
| Writing | Robert Lopez | Screenplay |
| Camera | Alvin Wyckoff | Director of Photography |
| Editing | Harry Komer | Editor |
| Art | Paul Youngblood | Art Direction |
