Walter Miller is the man behind the badge in this silent serial that is the powerhouse precursor to "Dragnet," etc. Battling an evil villain known as the Frog for possession of a formula that would give its owner enough power to control the world, he gets involved in a string of thrilling adventures. With Neva Gerber, Ruth Royce. 10 chapters; 3 1/3 hrs. on two discs. Standard; Soundtrack: music score. Silent with music score.