cast
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Ben Gazzara
Al Capone
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Harry Guardino
Johnny Torrio
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Sylvester Stallone
Frank Nitti
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Susan Blakely
Iris Crawford
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John Cassavetes
Frankie Yale
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Frank Campanella
Big Jim Colosimo
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John Orchard
Dion O'Banion
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Carmen Argenziano
Jack McGurn
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George Chandler
Robert E. Crowe
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John Davis Chandler
Hymie Weiss
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Royal Dano
Anton J. Cermak
- Joe De Nicola Charles Fischetti
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Angelo Grisanti
Angelo Genna
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Peter Maloney
Jake Guzik
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Dick Miller
Joe Pryor
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Robert Phillips
Bugs Moran
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Martin Kove
Pete Gusenberg
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Mario Gallo
Giuseppe Aiello
- George Milan William H. Thompson
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Russ Marin
Joseph Stenson
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Tony Giorgio
Antonio Lombardo
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John Martino
Tony Amatto
- Bert Conway Frank Loesch
- Don Pulford William Cooper
- Pamela Toll Mrs. Atkins
- Eugenia Stewart Miss Detwiller
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Don McGovern
N.Y. Cop #1
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Redmond Gleeson
N.Y. Cop #2
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John Finnegan
N.Y. Police Lt.
- Laurence Hagen Samuel Ettelson
- Tom Cook Sam Volenta
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Vincent Barbi
Solly
- Tina Scala Mrs. Torrio
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James V. Christy
Thomas Bronk
- Jack Ackerman Adam Heyer
- Ralph James Judge J.H. Wilkerson
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Carmen Filpi
Waiter
- Jim Galante John May
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John Howard
Warden J. Johnston
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Beach Dickerson
Joe Kepka
- John C. Broderick Maitre d'
- Chuck Traynor Senator
- James R. Sweeney Prison Doctor
- George Engelson Torrio's Doctor
- Deborah Klose Female Reporter
- John Favorite First Reporter
- John Armond Second Reporter
- Jack O'Leary Pool Hall Owner
- Ben Marino Frank Gusenberg
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Vincent Di Paolo
Mob Soldier (uncredited)