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
Captain America / Grant Gardner
Lorna Gray
Gail Richards
Lionel Atwill
Cyrus Maldor
Charles Trowbridge
Police Commissioner Dryden
Russell Hicks
Mayor Randolph
George J. Lewis
Bart Matson
John Davidson
Gruber
Frank Reicher
Lyman
