Robert Stack
Eliot Ness (118 eps)
Nicholas Georgiade
Enrico Rossi (118 eps)
Steve London
Jack Rossman (118 eps)
Paul Picerni
Lee Hobson (118 eps)
Abel Fernandez
William Youngfellow (118 eps)
Walter Winchell
Narrator (118 eps)
Charlie Picerni
Club Patron (uncredited) (13 eps)
Anthony George
Cam Allison Jr. (8 eps)
Frank Wilcox
Beecher Asbury (7 eps)
Dick Cherney
Police Officer (uncredited) (7 eps)
Lovyss Bradley
Matron (uncredited) (7 eps)
Richard Reeves
Bartender (uncredited) (6 eps)
Harold J. Stone
Barney Jarreau (6 eps)
Cyril Delevanti
Newsboy (5 eps)
Eddie Hice
Hood (uncredited) (5 eps)
Dale Van Sickel
Police Officer (uncredited) (4 eps)
Frank De Kova
Louis Campagne (4 eps)
Robert Middleton
Mayor Anton J. Cermak (4 eps)
Eugene Iglesias
George Karig (4 eps)
Charles Sherlock
Police Photographer (uncredited) (4 eps)
Roy Damron
Club Patron (uncredited) (4 eps)
Russell Custer
Boxing Spectator (uncredited) (4 eps)
Chuck Hicks
LaMarr Kane (3 eps)
Hal Taggart
Room Clerk (uncredited) (3 eps)
Sol Gorss
Carmen (uncredited) (3 eps)
Joe Turkel
Birdie Yates (3 eps)
Phyllis Coates
Ellie Morley (3 eps)
Richard Bakalyan
Benno (3 eps)
Howard Culver
Joe (uncredited) (3 eps)
John Harmon
Ed Johnson (uncredited) (3 eps)
Nehemiah Persoff
Jake 'Greasy Thumb' Guzik (3 eps)
Harry Harvey
Harold Coldman (2 eps)
Raymond Bailey
John Carvell (2 eps)
Penny Santon
Mrs. Zagano (2 eps)
Virginia Vincent
Mona Valentine (2 eps)
Martin Landau
Jerry Fanning (2 eps)
Gavin MacLeod
Whitey Metz (2 eps)
Sam Gilman
Detective Barney Kyle (2 eps)
Stefan Gierasch
Cooker (2 eps)
Claude Akins
Jake 'Dodo' Ryan (2 eps)
Norman Alden
Barry Carlton (2 eps)
Joseph Mell
Herschel Levitan (2 eps)
Frank Puglia
Joe Flores (uncredited) (2 eps)
Joe Mantell
Giuseppe 'Joe' Zangara (2 eps)
Lee Van Cleef
Frank Diamond (2 eps)
Ted de Corsia
Nate Stryker (2 eps)
Virginia Christine
Dora Mizo (2 eps)
Lee Marvin
Mike Brannon (2 eps)
Michael Hinn
Sheriff (2 eps)
Joseph Ruskin
Alexander Stavro (2 eps)
Barry Morse
Michel Viton (2 eps)
Marc Lawrence
Luigi Renaldo (2 eps)
John Daheim
Tom A. Jansen (2 eps)
Percy Helton
Mr. Meyer (2 eps)
John George
Spectator Outside Arena (uncredited) (2 eps)
Dan Seymour
Weisman (2 eps)
Leo Gordon
Pops Gantry (2 eps)
Adam Williams
Lloyd Barker (2 eps)
Dabbs Greer
Thomas B. Randall (2 eps)
Madlyn Rhue
Sally Karpeles (2 eps)
Darryl Hickman
Danny Madikoff (2 eps)
Frank J. Scannell
Sideshow Barker (uncredited) (2 eps)
Lou Krugman
Henchman (uncredited) (2 eps)
Paul Sorensen
Angie (2 eps)
Roy Engel
Fire Chief Dawson (uncredited) (2 eps)
Jeremy Slate
Elroy Daldran (2 eps)
A.G. Vitanza
Cooker (2 eps)
Malachi Throne
Duke Barker (2 eps)
John Kellogg
Lucky (2 eps)
Michael Ansara
Charlie Steuben (2 eps)
Norman Burton
Wally Dagan (2 eps)
Alex Montoya
Max Charcas (1 eps)
Vince Edwards
Nick Delgado (1 eps)
Sid Haig
Augie the Hood (1 eps)
Elizabeth Montgomery
Rusty Heller (1 eps)
David White
Atty. Archie Grayson (1 eps)
Warren Oates
Artie Krebs (1 eps)
Elizabeth MacRae
Bunny Colton (1 eps)
Herbert Lytton
Restaurant Patron (uncredited) (1 eps)
Marion Ross
Vera Schultz (1 eps)
Leonard Mudie
Judge (uncredited) (1 eps)
Lawrence Dobkin
Dutch Schultz (1 eps)
Richard Anderson
Sidney Rogers / Zoran Bresnovitch (1 eps)
Bruce Gordon
Frank Nitti (1 eps)
William Bendix
Wally Legenza (1 eps)
Alan Hale Jr.
'Big' Bill Phillips (1 eps)
Florence Halop
Flora Weinberg (1 eps)
Jerry Paris
Agent Martin Flaherty (1 eps)
Peter Falk
Duke Mullen (1 eps)
Sam Flint
Minister (uncredited) (1 eps)
J. Carrol Naish
Joseph H. 'Joe' Bucco (1 eps)
Henry Silva
Little Charlie Sebastino (1 eps)
Rita Lynn
Anna Bucco (1 eps)
John McIntire
Loren Hall (1 eps)
Len Lesser
Gunther (1 eps)
Richard Conte
Arnie Seeger (1 eps)
Michael Constantine
Edmund Wald (1 eps)
Ed Asner
Fedor Bartok (1 eps)
George Murdock
Gus Dmytryk (1 eps)
Jack Gordon
Man at Party (uncredited) (1 eps)
Fred Graham
Guard (uncredited) (1 eps)
Don C. Harvey
Howard (uncredited) (1 eps)
Ruth White
Bertha Levinson (1 eps)
Jim Backus
William Norbert (1 eps)
Connie Hines
Maybelle Maney (1 eps)
Anne Francis
Doreen Maney (1 eps)
John Dehner
Huey Barker (1 eps)
Tim Considine
Arnie Mizo (1 eps)
Joyce Van Patten
Claire Vale (1 eps)
Mike Mazurki
Frankie Marlowe (1 eps)
Ralph Dumke
Judge Albert Humboldt (uncredited) (1 eps)
Keenan Wynn
Augie 'The Banker' Ciamino (1 eps)
Mario Siletti
Restaurant Owner (uncredited) (1 eps)
Maudie Prickett
Telephone Supervisor (uncredited) (1 eps)
Roy Thinnes
Denny Brannon (1 eps)
James Caan
Keir Brannon (1 eps)
Marianna Hill
Laurie Reagan (1 eps)
Sherwood Price
Herbie Pulaski (1 eps)
Grace Lee Whitney
Fran (1 eps)
Richard Deacon
Bill Skidmore (1 eps)
Sterling Holloway
Horace De Vilbill (1 eps)
Jimmy Lydon
Hotel Clerk (uncredited) (1 eps)
Jack Klugman
Morton Halas (1 eps)
Peter Brocco
Pete Lavery (1 eps)
Alexander Lockwood
Dr. Burley (1 eps)
Kaaren Verne
Landlady (1 eps)
Dennis Patrick
Gil Haller (1 eps)
Norman Leavitt
Customs Records Clerk (uncredited) (1 eps)
Joseph V. Perry
Junkie (uncredited) (1 eps)
Charles Seel
Baggage Car Clerk (uncredited) (1 eps)
Albert Salmi
Steve 'Country Boy' Parrish (1 eps)
Carroll O'Connor
Barney Lubin (1 eps)
Victor Jory
Arnold Stegler (1 eps)
Frank Mills
Spectator at Shooting (uncredited) (1 eps)
Robert Vaughn
Charlie Argos (1 eps)
John Indrisano
Referee (uncredited) (1 eps)
Louise Fletcher
Eloise (1 eps)
Emerson Treacy
Reverend (uncredited) (1 eps)
Richard Jaeckel
Hans Eberhardt (1 eps)
Stacy Harris
Capt. Reardon (1 eps)
Willis Bouchey
Nathaniel Emmons (1 eps)
Forbes Murray
Banker (uncredited) (1 eps)
Barbara Parkins
Girl (uncredited) (1 eps)
Ruth Roman
Georgiana Drake (1 eps)
Anne Helm
Marian Keyes (1 eps)
Mario Gallo
Manny Kravitz (1 eps)
Joe Lo Presti
Pete Appleby (1 eps)
Robert Redford
Jackson Emmit Parker (1 eps)
Walter Koenig
Student (uncredited) (1 eps)
Yale Summers
Student (uncredited) (1 eps)
Lillian Bronson
Mrs. Lindsey (1 eps)
Carleton Young
Inspector (1 eps)
Harold Gould
Arnold Javits (uncredited) (1 eps)
Frank Albertson
Jason MacIntyre (1 eps)
Telly Savalas
Leo Stazak (1 eps)
Bill Zuckert
Vic (1 eps)
Don Diamond
George Keeley (1 eps)
Herschel Graham
Pedestrian (uncredited) (1 eps)
Ted Knight
Turnley (uncredited) (1 eps)
Dick York
Ernie Torrance (1 eps)
Nita Talbot
Alice (1 eps)
Edward Binns
Dr. Samuels (1 eps)
Raymond Guth
Morrie (1 eps)
Robert Yuro
Dino (1 eps)
Buck Kartalian
Al Gross (1 eps)
Bartlett Robinson
Mayor Marcus Stone (1 eps)
Majel Barrett
Waitress (uncredited) (1 eps)
Joseph Wiseman
Albert Maris (1 eps)
Vic Morrow
Collier (1 eps)
John Larch
Bryan 'Bull' Hanlon (1 eps)
John McLiam
Driver (1 eps)
Jack Elam
Jug Alverson (1 eps)
Guy Way
Hood (uncredited) (1 eps)
Woodrow Parfrey
Ferris (1 eps)
Dan Frazer
Phil Olive (1 eps)
Victor Buono
Parnise Surigao (1 eps)
Anne Whitfield
Sue (1 eps)
Dal McKennon
Mr. Phelps (1 eps)
Wayne Heffley
Swede (1 eps)
Henry Jones
Brooks Wells (1 eps)
Edward Andrews
E. Carlton Duncan (1 eps)
J. Pat O'Malley
Warden Carroll (1 eps)
George Ford
Restaurant Patron (uncredited) (1 eps)
Harry Morgan
George 'Bugs' Moran (1 eps)
Phillip Pine
Mike Marconi (1 eps)
Mario Roccuzzo
Nicky Bousso (1 eps)
James Coburn
Dennis Garrity (1 eps)
Brian Keith
Jim Martinson (1 eps)
Joanna Barnes
Marcie McKuen (1 eps)
Mason Curry
Coroner (uncredited) (1 eps)
Joseph Campanella
Vince Dastille (1 eps)
Richard Bull
Jimmy (uncredited) (1 eps)
Don Ross
Charlie (uncredited) (1 eps)
George Sawaya
Hood (uncredited) (1 eps)