In this serial, a "death ray" created by an ex-Scotland Yard inspector and his colleagues falls into the hands of a sinister villain called "The Scorpion." But when he discovers that the device is missing a piece, he attempts to track it down while the titular hero races to save the day. Herbert Rawlinson, Ralph Byrd, Joan Barclay star. 15 chapters; 5 hrs. Standard; Soundtrack: English.