A 15 episode serial in which Blake battles the "Scorpion" over possession of a 'death ray' machine.
Ralph Byrd
Herbert Rawlinson
Joan Barclay
Lloyd Hughes
Dickie Jones
Lucille Lund
Nick Stuart
Sam Flint
Gail Newbury
Jimmy Aubrey
Theodore Lorch
George DeNormand
Bob Terry
William Farrel
Frank Wayne