A 15 episode serial in which Blake battles the "Scorpion" over possession of a 'death ray' machine.DirectorRobert F. Hill
StarringRalph ByrdDr. Jerry SheehanHerbert RawlinsonSir James BlakeJoan BarclayHope MasonLloyd HughesDr. Marshall, 'The Scorpion'Dickie JonesBobby MasonLucille LundDuchessNick StuartJulotSam FlintChief Insp. HendersonGGail NewburyMimi the PolicewomanJimmy AubreyThe Hag / Baron PolinkaTheodore LorchDaggett, the ButlerGGeorge DeNormandHenchman Pedro