Action Sci-Fi
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.
Directed by
Wallace Grissell, Spencer Gordon Bennet, Yakima Canutt
Lane Chandler
Police Insp. Reed
Fred Graham
Eddie Parker
Roy Barcroft
Capt. Mephisto
Forrest Taylor
Prof. William Forrest
Kenne Duncan
Sidney Brand
Tom Steele
Lyons / Bailey
Forbes Murray
Prof. Harry Hargraves
Linda Stirling
Claire Forrest
Yakima Canutt
Dale Van Sickel
Barker / Ritter / Lewis / Frazier / Sardon
Russ Vincent
Ruga
Harry Strang
Frederick "Fred" Braley
Ed Cassidy
Paul Melton
Jack Ingram
Edward Armstrong
Richard Bailey
Lance Reardon
Frank Alten
John Raymond
Duke Green
Spencer Harvey

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