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.

Cast:Albert Dekker, Thomas Coley, Janice Logan, Charles Halton, Victor Kilian, Frank Yaconelli,

Genre:Adventure, Horror, Science Fiction,

country:United States of America,

Production:Paramount Pictures,