Sir James Blake has retired from Scotland Yard so that he can assist his niece Hope and her friend Jerry in developing an apparatus they have invented. Sir James thinks that their invention has the potential to prevent wars, and plans to donate it to the League of Nations. But a gang of criminals led by the elusive "Scorpion" steals the device, and Blake and his associates must recover the invention and determine the identity of the "Scorpion".
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Cast
Ralph Byrd
Jerry Sheehan
Joan Barclay
Hope Mason
Lloyd Hughes
Doctor Marshall
Dickie Jones
Bobby Mason
Lucille Lund
Duchess
Nick Stuart
Julot
Sam Flint
Chief Insp. Henderson
Gail Newbury
Mimi - Policewoman
Jimmy Aubrey
The Hag / Baron Polinka
Theodore Lorch
Daggett - the Butler (as Ted Lorch)
George DeNormand
Pedro - Henchman
Bob Terry
Peyton - Henchman
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