Superhero Captain America battles the evil forces of the archvillain called The Scarab, who poisons his enemies and steals a secret device capable of destroying buildings by sound vibrations.
Dick Purcell
as Captain America / Grant Gardner
Lorna Gray
as Gail Richards
Lionel Atwill
as Cyrus Maldor
Charles Trowbridge
as Police Commissioner Dryden
Russell Hicks
as Mayor Randolph
George J. Lewis
as Bart Matson
John Davidson
as Gruber
Frank Reicher
as Lyman
Al Ferguson
as Detective
Howard Hickman
as Lyman’s Attorney
Tom London
as Mack
Edward Van Sloan
as Gregory
