On screen
Cast
15 credited performers
Robert Stack
Eliot Ness
Keenan Wynn
Joe Fuselli
Barbara Nichols
Brandy LaFrance
Pat Crowley
Betty Anderson
Bill Williams
Martin Flaherty
Joe Mantell
George Ritchie
Bruce Gordon
Frank Nitti
Neville Brand
Al Capone
Peter Leeds
Character not listed
Eddie Firestone
Character not listed
Robert Osterloh
Character not listed
Paul Dubov
Character not listed
Abel Fernandez
Character not listed
Wolfe Barzell
Picco
John Beradino
Johnny Giannini