• 
  Roger Corman

  regizor

• 
  Howard Browne

  scenarist

• 
  Jason Robards

  Al Capone
• 
  George Segal

  Peter Gusenberg
• 
  David Canary

  Frank Gusenberg
• 
  Frank Silvera

  Nick Sorello
• 
  Ralph Meeker

  George Clarence 'Bugs' Moran
• 
  Jean Hale

  Myrtle

• 
  Paul Richards

  Charles Fischetti
• 
  Jan Merlin

  Willie Marks
• 
  Joseph Campanella

  Albert Wienshank
• 
  Alex Rocco

  Diamond
• 
  John Agar

  Dion O'Bannion
• 
  Tom Signorelli

  Bobo Borotto
• 
  Daniel Ades

  Angelo Molina

• 
  Harold J. Stone

  Frank Nitti
• 
  Tom Reese

  Ted Newberry
• 
  Kurt Kreuger

  James Clark
• 
  Leo Gordon

  Heitler
• 
  Rico Cattani

  Albert Anselmi
• 
  Milton Frome

  Adam Heyer
• 
  Gus Trikonis

  Rio
• 
  Clint Ritchie

  Jack McGurn
• 
  Charles Dierkop

  Salvanti
• 
  Bruce Dern

  Johnny May
• 
  Alexander D'Arcy

  Joe Aiello
• 
  Richard Bakalyan

  John Scalise
• 
  Celia Lovsky

  Josephine Schwimmer
• 
  Reed Hadley

  Hymie Weiss
• 
  Mickey Deems

  Reinhold Schwimmer
• 
  Joe Turkel

  Jake 'Greasy Thumb' Guzik
• 
  Jack Nicholson

  Gino
• 
  Joan Shawlee

  Edna, Frank's Girlfriend
• 
  Dick Miller

  Gangster dressed as a cop
• 
  Betsy Jones-Moreland

  Poolside Interviewer
• 
  Mary Grace Canfield

  Mrs. Doody, Landlady
• 
  Buck Taylor

  Poolside interviewer 2

• 
  Roger Corman

  producător
• 
  Paul Rapp

  producător asociat
• 
  Milton R. Krasner

  imagine
• 
  William B. Murphy

  montaj
• 
  Fred Steiner

  coloană sonoră
• 
  Lionel Newman

  coloană sonoră
• 
  Steven Potter

  decoruri
• 
  Walter M. Scott

  decoruri