Four explorers are summoned to Peru by the brilliant physicist Dr Thorkel. They discover a rich source of radium and a half-mad Thorkel who shrinks them down to one-fifth their normal size when they threaten to stop his unorthodox experimentation.
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Cast
- Albert DekkerDr. Alexander Thorkel
- Thomas ColeyBill Stockton
- Janice LoganDr. Mary Robinson
- Charles HaltonDr. Rupert Bulfinch
- Victor KilianSteve Baker
- Frank YaconelliPedro
- Paul FixDr. Mendoza
- Frank ReicherProf. Kendall
- Jane WebbWoman (uncredited)
- Billy WilkersonSilent Indian (uncredited)
Crew
- Ernest B. SchoedsackDirector
- Malcolm Stuart BoylanScreenplay
- Tom KilpatrickScreenplay
- Henry SharpDirector of Photography
- Gerard CarbonaraOriginal Music Composer
- Albert Hay MalotteOriginal Music Composer
- Ernst TochOriginal Music Composer
- Ellsworth HoaglandEditor
- Merian C. CooperProducer
- Dale Van EveryProducer
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