 Dennis O'KeefeBarry Amsterdam | Barry Amsterdam |
 Abbe LaneConnie Peters | Connie Peters |
 Paul StewartArnold 'Arnie' Valent | Arnold 'Arnie' Valent |
 Allison HayesJoyce Kern, Alias Sue Morton | Joyce Kern, Alias Sue Morton |
 Xavier CugatBenny Chico | Benny Chico |
 Richard H. CuttingDavid Healey | David Healey |
 Chris AlcaideNate | Nate |
 William ChalleeDolan | Dolan |
 Carroll McComasMother Valent (uncredited) | Mother Valent (uncredited) |
 Hugh SandersPat Winters | Pat Winters |
 John ZarembaRobert Fenton | Robert Fenton |
| GGeorge BrandJack Roper | Jack Roper |
| HHortense PetraCleo Allen (uncredited) | Cleo Allen (uncredited) |
 Al CaponeAl Capone (archive footage) (uncredited) | Al Capone (archive footage) (uncredited) |
 Steve CarruthersGambler (uncredited) | Gambler (uncredited) |
 Franklyn FarnumNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
 Bess FlowersGambler (uncredited) | Gambler (uncredited) |
| GGil FryeTony (uncredited) | Tony (uncredited) |
| RRobert HainesParty Guest (uncredited) | Party Guest (uncredited) |
 Charles HorvathHugo (uncredited) | Hugo (uncredited) |
 Jack KenneyCrowd Member at Murder Scene (uncredited) | Crowd Member at Murder Scene (uncredited) |
 Tyler McVeyHenderson (uncredited) | Henderson (uncredited) |
 Joseph MellMarkey (uncredited) | Markey (uncredited) |
 Harold MillerFight Spectator (uncredited) | Fight Spectator (uncredited) |
| JJoe PloskiStreet Passerby / Party Guest (uncredited) | Street Passerby / Party Guest (uncredited) |
 Cosmo SardoNightclub Patron / Party Guest (uncredited) | Nightclub Patron / Party Guest (uncredited) |
 Carl SkloverReporter on Murder Scene (uncredited) | Reporter on Murder Scene (uncredited) |
| BBert StevensNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
| MMark HannaBrad Lacy (uncredited) | Brad Lacy (uncredited) |
