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.
Cast
Richard Bailey
Lance Reardon
Linda Stirling
Claire Forrest
Roy Barcroft
Capt. Mephisto
Kenne Duncan
Sidney Brand
Forrest Taylor
Prof. William Forrest
Forbes Murray
Prof. Harry Hargraves
Jack Ingram
Edward Armstrong
Harry Strang
Frederick "Fred" Braley
Ed Cassidy
Paul Melton
Frank Alten
John Raymond
Lane Chandler
Police Insp. Reed
Russ Vincent
Ruga
Dale Van Sickel
Barker / Ritter / Lewis / Frazier / Sardon
Tom Steele
Lyons / Bailey
Duke Green
Spencer Harvey
Crew
Wallace Grissell
Director
Spencer Gordon Bennet
Director
Yakima Canutt
Director
Joseph F. Poland
Screenplay
Jesse Duffy
Screenplay
Basil Dickey
Screenplay
Albert DeMond
Screenplay
Alan James
Screenplay
Grant Nelson
Screenplay
Harold Minter
Editor
Cliff Bell Sr.
Editor
Bud Thackery
Director of Photography
Ronald Davidson
Producer, Associate Producer
Ed Borschell
Sound
Howard Lydecker
Special Effects
Theodore Lydecker
Special Effects
Mort Glickman
Original Music Composer
Richard Cherwin
Music Director
Charles S. Thompson
Set Decoration
Fred Graham
Stunts
Duke Taylor
Stunts
Dale Van Sickel
Stunts
Duke Green
Stunts
Tom Steele
Stunts
Eddie Parker
Stunts
Babe DeFreest
Stunts
R.G. Springsteen
Unit Manager
Fred A. Ritter
Art Direction
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