Movies and TvShows featuring "radium-detector" theme.
In The Phantom Empire, a singing cowboy and his friends stumble upon an ancient underground civilization ruled by a high priest. They must navigate treachery, radioactive uranium, and a sinister death-ray to protect their ranch and radio show.
Claire Forrest seeks her kidnapped scientist father, hidden somewhere on Mystery Island. He is held and forced to work on diabolical inventions by Captain Mephisto, a costumed villain.
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