
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.

Albert Dekker
Dr. Alexander Thorkel

Thomas Coley
Bill Stockton

Janice Logan
Dr. Mary Robinson

Charles Halton
Dr. Rupert Bulfinch


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April 12, 1940
1h 16m
6.2
Ernest B. Schoedsack
Malcolm Stuart Boylan, Tom Kilpatrick


Paramount Pictures
US

Victor Kilian
Steve Baker

Frank Yaconelli
Pedro

Paul Fix
Dr. Mendoza

Frank Reicher
Prof. Kendall

Jane Webb
Woman (uncredited)

Billy Wilkerson
Silent Indian (uncredited)
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