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.
Richard Bailey
Linda Stirling
Roy Barcroft
Kenne Duncan
Forrest Taylor
Forbes Murray
Jack Ingram
Harry Strang
Ed Cassidy
Frank Alten
Lane Chandler
Russ Vincent
Dale Van Sickel
Tom Steele
Duke Green