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 Purcellas Captain America / Grant Gardner
Lorna Grayas Gail Richards
Lionel Atwillas Cyrus Maldor
Charles Trowbridgeas Police Commissioner Dryden
Russell Hicksas Mayor Randolph
George J. Lewisas Bart Matson
John Davidsonas Gruber
Frank Reicheras Lyman
Al Fergusonas Detective
Howard Hickmanas Lyman’s Attorney