Reparto y equipo

Richard Wilson

Malvin Wald

Henry F. Greenberg

Rod Steiger Al Capone

Fay Spain Maureen Flannery

James Gregory Schaefler (narrator)

Martin Balsam Mac Keeley, reporter

Nehemiah Persoff Johnny Torrio

Murvyn Vye George 'Bugs' Moran

Robert Gist Dion O'Banion

Lewis Charles Earl Weiss

Joe De Santis Big Jim Colosimo

Sandy Kenyon Bones Corelli

Raymond Bailey Lawyer Brancato

Al Ruscio Tony Genaro

Louis Quinn Joe Lorenzo

Ron Soble John Scalisi

Steve Gravers Albert Anselmi

John H. Burrows

Leonard J. Ackerman

David Raksin

Lucien Ballard

Walter Hannemann