Det. Lt. Ben Guthrie / Lt. Ben Guthrie / Det. Lt. Ben Gutherie (194 episodes, 1954-1960)
Insp. Matt Grebb / Greb / Inspector Matt Greb (185 episodes, 1954-1959)
Insp. Fred Asher (183 episodes, 1954-1959)
Ann Burton / Bernadine Hart / Dorie Sims / Ruth Grady (8 episodes, 1957-1959)
Adele Thomas / Jeri Jackson / Julie (6 episodes, 1955-1959)
Willie Martin (5 episodes, 1954-1958)
Antonio Bardella / George D'Andreas / Martuzzi (4 episodes, 1956-1958)
Alice Burnett / Jane Anthony (4 episodes, 1955-1958)
Ed Long / Roy Gilman (4 episodes, 1954-1958)
Clarence Herbert (4 episodes, 1955-1958)
Doctor / Justin Garner / Mr. Oakhurst / Philip Bunwood - News Dealer (3 episodes, 1954-1957)
Officer Pete Larkin / Pete Larkin (4 episodes, 1959)
Henry / Paul Manning (3 episodes, 1955-1956)
(3 episodes, 1958-1959)
Slowboat Murphy (3 episodes, 1955-1958)
Cannonball McGraw (3 episodes, 1955-1957)
Helen Peters / Wilhemina Forsythe (3 episodes, 1958-1959)
Frank Donner (3 episodes, 1955-1958)
Samuel Bradford (3 episodes, 1956-1959)
Madelon Gordon (3 episodes, 1957-1958)
Jane Carstairs / Mrs. Patterson (3 episodes, 1954-1959)
Big Dan McGran / Coroner's Investigator Erideaux (3 episodes, 1955-1959)
(3 episodes, 1959)
Ed Rakin - Gunshop Owner / Jim - Postal Inspector / Shipman (3 episodes, 1954-1959)
Angel / Ronald Stoner (3 episodes, 1954-1959)
Frank Josephs / Milo Fillmore / Pete Miley (3 episodes, 1957-1958)
Harry Beasley (3 episodes, 1955-1959)
Jim Paisley / Losier (3 episodes, 1954-1960)
Jeff Clarkson / Roger Treat (3 episodes, 1957-1958)
Jim Kasino / Rhodes (3 episodes, 1955-1959)
Doris Collins (3 episodes, 1956-1957)
Insp. Dan Delaney / Dan Delaney (3 episodes, 1959)
Policewoman Sandy McAllister / Sandy McAllister (3 episodes, 1959)
Randy Collins (3 episodes, 1955-1958)
Announcer (3 episodes, 1955-1959)
Helen Graves / Mrs. Witkowski (2 episodes, 1955-1958)
Adolph Berger / Heinrich Menzel (2 episodes, 1955-1957)
Gloria Carlson (2 episodes, 1956-1959)
(2 episodes, 1956-1958)
Troy Kimball (2 episodes, 1954-1958)
Martha Kimmel (2 episodes, 1957-1958)
(2 episodes, 1959)
Kenny Tappan (2 episodes, 1954-1959)
(2 episodes, 1954-1955)
Ann Brennizer (2 episodes, 1955-1957)
Kitty Dolan (2 episodes, 1955-1957)
Frank Gibbs (2 episodes, 1957-1959)
(2 episodes, 1957-1958)
John Oakhurst (2 episodes, 1957)
Charles Winters (2 episodes, 1958-1959)
(2 episodes, 1954-1958)
Capt. Leonard (2 episodes, 1954-1955)
(2 episodes, 1955-1959)
(2 episodes, 1955-1958)
(2 episodes, 1957)
Mrs. Lavella / Rosa Bardella (2 episodes, 1955-1958)
Mr. Benson (2 episodes, 1955-1957)
(2 episodes, 1956-1959)
Mrs. Gresham (2 episodes, 1957-1958)
Daniel Livermore (2 episodes, 1957-1958)
Happy Anderson (2 episodes, 1957)
Walter Smith (2 episodes, 1958)
Jojo Skandley (2 episodes, 1957-1959)
Mario (2 episodes, 1958-1959)
Claude Abrams (2 episodes, 1954-1955)
Doc Gerson / Dr. Gerson (2 episodes, 1954)
Robert Avery (2 episodes, 1957-1959)
Happy Sherman (2 episodes, 1957-1959)
Earl Statz / Roger (2 episodes, 1958)
Alfie (2 episodes, 1959)
Dave Kane (2 episodes, 1959)
Harris (2 episodes, 1954-1959)
Lee Morris (2 episodes, 1958)
Carmen Billing (2 episodes, 1959)
Borden - Desk Clerk / Policeman (2 episodes, 1954-1955)
Lineup Suspect #1 (2 episodes, 1957-1959)
Goldsworthy - Hotel Manager / Policeman (2 episodes, 1954-1956)
Slim Jameson / Tracy Powers (2 episodes, 1955-1957)
(2 episodes, 1955-1957)
Circus Malone / Deadwood Parkhurst (2 episodes, 1956-1957)
Self (1 episode, 1958-1959)
Charlie Summers / Insp. Charlie Summerss (2 episodes, 1959)
Dickens (2 episodes, 1954-1959)
Tom - Police Sgt. / William Grainley (1 episode, 1954-1957)
Mrs. Oakhurst (2 episodes, 1955-1957)
Doctor / Police Medic Reyburn (1 episode, 1955)
Maria Martinez (2 episodes, 1955-1958)
Julie (2 episodes, 1958-1959)
Helen Trescott / Martha Collins (2 episodes, 1955-1957)
(2 episodes, 1955-1956)
Lineup Suspect with Slippers (1 episode, 1958-1959)
Automobile Rental Agent (2 episodes, 1954-1955)
Mr. Doyle - Cafe Owner / Police Doctor (1 episode, 1955-1958)
Police Officer Mazzola (1 episode, 1955)
Hansen / Lucas (2 episodes, 1959)
(1 episode, 1954)
Gladys Knight (1 episode, 1954)
Charlie Neeley (1 episode, 1954)
Joseph Finley (1 episode, 1954)
Edward Patterson (1 episode, 1954)
Johnny Brocklin (1 episode, 1954)
(1 episode, 1955)
Peggy Kirby (1 episode, 1955)
Mr. Lavella (1 episode, 1955)
Leigh Davis (1 episode, 1955)
Fante (1 episode, 1955)
Robert Keegan (1 episode, 1956)
Sam Wharton (1 episode, 1956)
Col. Fitzhugh-Martin (1 episode, 1956)
(1 episode, 1956)
James Sunday (1 episode, 1956)
(1 episode, 1957)
Dorothy Kellems (1 episode, 1957)
Thomas Richards - Apartment Manager (1 episode, 1957)
Stanley Devlin (1 episode, 1957)
El Gato / Luis Gonzales (1 episode, 1957)
Lewis Cavanaugh (1 episode, 1957)
Harold Verey (1 episode, 1957)
(1 episode, 1958)
Deacon Whitehall (1 episode, 1958)
Laura Courtney (1 episode, 1958)
Lois Donner (1 episode, 1958)
Mona Johnson (1 episode, 1958)
Mr. Backeroni (1 episode, 1958)
Charles Steige (1 episode, 1958)
Christy Donnell (1 episode, 1958)
George Martinez (1 episode, 1958)
Babs Krale (1 episode, 1958)
Dr. George Jeremy (1 episode, 1958)
Paula Adams (1 episode, 1959)
(1 episode, 1959)
Louise (1 episode, 1959)
Alfred Peters (1 episode, 1959)
Charles Lanski (1 episode, 1954)
Fay Seeley (1 episode, 1954)
James Bolger (1 episode, 1954)
Johnny Tysano (1 episode, 1955)
Al Murphy (1 episode, 1955)
Mr. Sukayamo (1 episode, 1955)
Sally McGraw (1 episode, 1956)
Charles Corvidian (1 episode, 1956)
Carol Nader (1 episode, 1957)
Steve Henderson (1 episode, 1957)
Austin Lancaster (1 episode, 1957)
Peggy Granger (1 episode, 1957)
Gonzales (1 episode, 1957)
Eleanor (1 episode, 1958)
Mrs. Norway (1 episode, 1958)
Grady (1 episode, 1958)
Wilbur Beldon (1 episode, 1958)
Ed Schmidt (1 episode, 1958)
Tony Tugad (1 episode, 1958)
Willard Peabody (1 episode, 1958)
Birdie (1 episode, 1958)
Rafael Martinez (1 episode, 1958)
Jerome Folger (1 episode, 1958)
Eddie Morse (1 episode, 1958)
Ed Taylor (1 episode, 1958)
Self (1 episode, 1958)
Bob Reynolds (1 episode, 1959)
Boylston Billing (1 episode, 1959)
Mrs. Warner (1 episode, 1954)
Willie Vance (1 episode, 1954)
Shaw (1 episode, 1954)
Louise Watson (1 episode, 1955)
Madge Kasino (1 episode, 1955)
Larry Hope (1 episode, 1955)
Mrs. Brennizer (1 episode, 1955)
Dorine Gallagher (1 episode, 1956)
Bell Boy (1 episode, 1956)
Mindy (1 episode, 1956)
Harrigan (1 episode, 1956)
Antonio Panelli, apt. mgr. (1 episode, 1956)
Pepe (1 episode, 1957)
Jerry Patterson (1 episode, 1957)
Teddy Fontaine (1 episode, 1957)
Velma Hartman (1 episode, 1958)
Pace (1 episode, 1958)
Grace Webster (1 episode, 1958)
Ken Sells (1 episode, 1958)
Elsie Folger (1 episode, 1958)
Dr. Webster (1 episode, 1958)
Maggie (1 episode, 1958)
Joyce Stanley (1 episode, 1958)
David Duell (1 episode, 1959)
Marcella Shipman (1 episode, 1959)
Stan Arnold (1 episode, 1959)
Lela Martin (1 episode, 1959)
Ricco (1 episode, 1959)
Tony Ambruster (1 episode, 1959)
Charles Lawson (1 episode, 1959)
Eleanor Larsen (1 episode, 1960)
Warner (1 episode, 1954)
Gunther - Holdup Victim (1 episode, 1954)
Mrs. Beth Maron (1 episode, 1955)
James Wendry (1 episode, 1955)
Mrs. Gordon (1 episode, 1956)
Stewardess (1 episode, 1956)
O'Toole (1 episode, 1956)
Frank Willis (1 episode, 1956)
Sidney Carstairs (1 episode, 1957)
Theodore (1 episode, 1958)
Gallagher (1 episode, 1958)
Laura Lowell (1 episode, 1958)
Mr. Sells (1 episode, 1958)
Jake Duncan (1 episode, 1958)
Sookie Larkin (1 episode, 1958)
Ruth Greene (1 episode, 1958)
Diane Daley (1 episode, 1959)
Dr. Herbert Shea (1 episode, 1959)
Donald Wentworth (1 episode, 1959)
Fleming (1 episode, 1960)
Holdup Victim (1 episode, 1954)
Earl Wallace (1 episode, 1954)
Willie Kasino (1 episode, 1955)
Miss Bartlett (1 episode, 1956)
Samuel X. Roscoe (1 episode, 1957)
Jane Abbott (1 episode, 1958)
Mrs. DeSues (1 episode, 1958)
Davis (1 episode, 1958)
Easter (1 episode, 1958)
Mike Earnshaw (1 episode, 1958)
Miss Doyle - Stewardess (1 episode, 1958)
Haley (1 episode, 1958)
Hortense Henratty (1 episode, 1958)
Jacques (1 episode, 1959)
Alma McGran (1 episode, 1959)
Broderick (1 episode, 1960)
Jack Hanley (1 episode, 1954)
Jack Lee (1 episode, 1954)
Police Sergeant (1 episode, 1957)
Nevada Jones (1 episode, 1957)
Beatty (1 episode, 1958)
Doctor (1 episode, 1959)
Rafferty (1 episode, 1960)
Truck Driver (1 episode, 1957)
Hotel Clerk (1 episode, 1959)
Pacelli (1 episode, 1960)
Steward (1 episode, 1958)
Robert Simpson (1 episode, 1959)
Lineup Suspect #2 (1 episode, 1957)
Proprietor (1 episode, 1958)
Ellie Hayden (1 episode, 1959)
Newsboy (1 episode, 1958)
Laurie Hayden (1 episode, 1959)
Lineup Suspect #4 (1 episode, 1957)
Maryanne Carstaires (1 episode, 1957)
Julia Wyatt (1 episode, 1957)
Florence Malone (1 episode, 1957)
Maxine Hill (1 episode, 1957)
Judson Carstaires (1 episode, 1957)
Harold Jeffries (1 episode, 1957)
Hollingsworth Coolidge (1 episode, 1957)
Leighton (1 episode, 1959)
Sister Angela (1 episode, 1959)
Donna (1 episode, 1959)
Bart Wade (1 episode, 1959)
Irene Maynard (1 episode, 1959)
Vezey (1 episode, 1959)
Myra Woodman (1 episode, 1959)
Linda (1 episode, 1959)
Army Armitage (1 episode, 1959)
Joey (1 episode, 1959)
Mrs. Maynard (1 episode, 1959)
Maxwell (1 episode, 1959)
Mary Anne (1 episode, 1959)
Blinky (1 episode, 1959)
Mark Sherman (1 episode, 1959)
Papa Vanetti (1 episode, 1959)
Yvonne (1 episode, 1959)
Scofield (1 episode, 1959)
Tyler (1 episode, 1959)
Corvin (1 episode, 1959)
Clark (1 episode, 1959)
Cara (1 episode, 1959)
Hess (1 episode, 1959)
Lupi (1 episode, 1959)
Helen (1 episode, 1959)
Hanna (1 episode, 1959)
Rivers (1 episode, 1959)
Peggy (1 episode, 1959)
Boyd Kincaid (1 episode, 1959)
Big Phil (1 episode, 1959)
Dave (1 episode, 1959)
Tina (1 episode, 1959)
Fannie (1 episode, 1959)
Kathy (1 episode, 1959)
Maria Vanetti (1 episode, 1959)
Martha (1 episode, 1959)
Haller (1 episode, 1959)
Cigarette Girl (1 episode, 1959)
Goode (1 episode, 1959)
Bartlett (1 episode, 1959)
Linden (1 episode, 1959)
Quine (1 episode, 1959)
Henry (1 episode, 1959)
Madge (1 episode, 1959)
Vince Vanetti (1 episode, 1959)
Insp. Charlie Summers (1 episode, 1959)
Phil (1 episode, 1959)
George (1 episode, 1959)
Willy (1 episode, 1959)
Voss (1 episode, 1959)
Ruth (1 episode, 1960)
Mary (1 episode, 1960)
Rev. Mr. Thompson (1 episode, 1960)
Eve (1 episode, 1960)
Danzig (1 episode, 1960)
Rosaric (1 episode, 1960)
Kranett (1 episode, 1960)
(1 episode, 1960)
Miss Harris (1 episode, 1960)
Grover (1 episode, 1960)
Casey's Bartender (uncredited) (1 episode, 1954)
Alex - Lineup Suspect (uncredited) (1 episode, 1954)
Victim's Mother (uncredited) (1 episode, 1954)
1st Man in Lineup (uncredited) (1 episode, 1954)
2nd Man in Lineup (uncredited) (1 episode, 1954)
Mrs. Hope (uncredited) (1 episode, 1955)
Fred - Lineup Suspect (uncredited) (1 episode, 1955)
Joe Tobey (uncredited) (1 episode, 1955)
Lineup Suspect (uncredited) (1 episode, 1955)
Doctor (uncredited) (1 episode, 1955)
Cop (uncredited) (1 episode, 1957)
Drug buyer (uncredited) (1 episode, 1959)