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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.
$168,000
March 17, 1945
Republic Pictures
15 people
Richard Bailey
Lance Reardon
Acting
Linda Stirling
Claire Forrest
Acting
Roy Barcroft
Capt. Mephisto
Acting
Kenne Duncan
Sidney Brand
Acting
Forrest Taylor
Prof. William Forrest
Acting
Forbes Murray
Prof. Harry Hargraves
Acting
Jack Ingram
Edward Armstrong
Acting
Harry Strang
Frederick "Fred" Braley
Acting
Ed Cassidy
Paul Melton
Acting
Frank Alten
John Raymond
Acting
Lane Chandler
Police Insp. Reed
Acting
Russ Vincent
Ruga
Acting
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