 | Harry Bellaver | ... | Det. Frank Arcaro / ... (136 episodes, 1958-1963) |
 | Horace McMahon | ... | Lt. Michael 'Mike' Parker / ... (112 episodes, 1958-1963) |
 | Paul Burke | ... | Det. Adam Flint / ... (99 episodes, 1960-1963) |
 | Lawrence Dobkin | ... | Narrator / ... (99 episodes, 1960-1963) |
 | Nancy Malone | ... | Libby Kingston (51 episodes, 1960-1963) |

| James Franciscus | ... | Det. James 'Jimmy' Halloran (39 episodes, 1958-1959) |
 | Herbert B. Leonard | ... | Narrator (39 episodes, 1958-1959) |

| John McIntire | ... | Lt. Dan Muldoon (25 episodes, 1958-1959) |
 | Jimmy Little | ... | Desk Sergeant / ... (19 episodes, 1958-1963) |
 | Robert Dryden | ... | Police Surgeon / ... (13 episodes, 1959-1962) |
 | Richard Kronold | ... | Detective Dutton / ... (10 episodes, 1958-1961) |
 | House Jameson | ... | Cogswell / ... (9 episodes, 1958-1963) |
 | Suzanne Storrs | ... | Janet Halloran / ... (9 episodes, 1958-1959) |

| Sorrell Booke | ... | Detective / ... (9 episodes, 1960-1963) |
 | William Cottrell | ... | Freddie - Lab Man / ... (8 episodes, 1961-1962) |
 | Robert Weil | ... | Prisoner / ... (7 episodes, 1959-1962) |

| Sid Raymond | ... | Assistant Store Manager / ... (7 episodes, 1958-1963) |

| Jack Klugman | ... | Alfy Tiloff / ... (6 episodes, 1959-1963) |

| Nehemiah Persoff | ... | Barney Peters / ... (6 episodes, 1959-1963) |
 | Johnny Seven | ... | Al Lacey / ... (6 episodes, 1958-1963) |

| Roger C. Carmel | ... | Al Buxley / ... (6 episodes, 1960-1963) |

| Leonardo Cimino | ... | Alberto Russo / ... (6 episodes, 1958-1963) |
 | Matt Crowley | ... | Commissioner O'Donnell / ... (6 episodes, 1958-1961) |

| Al Lewis | ... | Bookie / ... (6 episodes, 1959-1963) |
 | Alison Marshall | ... | Debbie Halloran / ... (6 episodes, 1958-1959) |
 | Jan Miner | ... | Lia / ... (5 episodes, 1958-1962) |
 | Sam Gray | ... | Detective Gode / ... (5 episodes, 1959-1963) |
 | Sally Gracie | ... | Bixie / ... (5 episodes, 1961-1962) |

| Mitch Ryan | ... | Driver / ... (5 episodes, 1961-1963) |
 | Mike Dana | ... | Gangster / ... (5 episodes, 1961-1963) |

| Richard S. Castellano | ... | Bartender / ... (5 episodes, 1962-1963) |
 | Luther Adler | ... | Henri Tourelle / ... (4 episodes, 1960-1962) |

| Martin Balsam | ... | Arnold Fleischman / ... (4 episodes, 1959-1962) |

| Robert Duvall | ... | Barney Sonners / ... (4 episodes, 1961-1962) |

| George Maharis | ... | Johnny Gary / ... (4 episodes, 1959-1960) |

| Lois Nettleton | ... | Fran Burney / ... (4 episodes, 1960-1962) |
 | Clement Fowler | ... | Ed 'Bumper' Jenkins / ... (4 episodes, 1959-1961) |
 | Henry Lascoe | ... | Bertrand Rosebrook / ... (4 episodes, 1961-1963) |
 | Fred J. Scollay | ... | Al Horner / ... (4 episodes, 1961-1963) |
 | Arny Freeman | ... | Klutz / ... (4 episodes, 1958-1961) |
 | Frank Campanella | ... | Cameraman / ... (4 episodes, 1958-1962) |
 | Albert Henderson | ... | Bartender / ... (4 episodes, 1959-1963) |
 | John C. Becher | ... | 2nd Businessman / ... (4 episodes, 1959-1963) |
 | Doris Rich | ... | Lady in Doorway / ... (4 episodes, 1961-1963) |
 | Joe Silver | ... | Assistant D.A. / ... (4 episodes, 1961-1963) |
 | Harold Gaetano | ... | Bodyguard / ... (4 episodes, 1961-1963) |

| Peter Falk | ... | Extortionist / ... (4 episodes, 1958-1962) |
 | Lou Antonio | ... | Al Machias / ... (4 episodes, 1959-1963) |
 | Lou Criscuolo | ... | Driver / ... (4 episodes, 1962-1963) |
 | Peter Gumeny | ... | Benevento / ... (4 episodes, 1961-1963) |
 | Harold Gary | ... | Garage Owner / ... (4 episodes, 1961-1963) |
 | Edward Lane | ... | Bellboy / ... (4 episodes, 1961-1962) |

| Eugene Roche | ... | ADA Smith / ... (4 episodes, 1961-1963) |
 | Remo Pisani | ... | Bookie / ... (4 episodes, 1961-1963) |
 | Will Hussing | ... | Lab Technician / ... (4 episodes, 1959) |
 | Charles Dierkop | ... | Arrest Suspect / ... (4 episodes, 1960-1962) |

| Marc Alan Austen | ... | Onlooker / ... (4 episodes, 1961-1962) |
 | James Barton | ... | Bo Giles / ... (3 episodes, 1959-1961) |
 | John Larch | ... | George Paraskis / ... (3 episodes, 1962-1963) |

| Jack Warden | ... | Neil Daggett / ... (3 episodes, 1962) |

| Barbara Barrie | ... | Marcia Kormack / ... (3 episodes, 1962) |
 | Jay Novello | ... | Anthony Scarzi / ... (3 episodes, 1958-1961) |

| Michael Tolan | ... | Det. Alan Keller / ... (3 episodes, 1958-1962) |

| Woodrow Parfrey | ... | Andrew Eisert / ... (3 episodes, 1959-1961) |
 | Elizabeth Allen | ... | Emily / ... (3 episodes, 1960-1963) |
 | Barry Morse | ... | Art Dealer / ... (3 episodes, 1961-1962) |
 | David J. Stewart | ... | Harry Lapen / ... (3 episodes, 1958-1961) |
 | Hilda Brawner | ... | Paula Doremus / ... (3 episodes, 1961-1963) |
 | Alfred Ryder | ... | Carl Blakely / ... (3 episodes, 1961-1962) |
 | Dino Di Luca | ... | Allesandro Corbello / ... (3 episodes, 1961-1962) |

| Michael Strong | ... | Det. Hal Perleman / ... (3 episodes, 1958-1963) |
 | Ludwig Donath | ... | Doc Randall Benton / ... (3 episodes, 1959-1962) |
 | Paul Stevens | ... | Judge / ... (3 episodes, 1961-1962) |
 | Carol Eve Rossen | ... | Gladys / ... (3 episodes, 1962-1963) |
 | Pat Malone | ... | Harrison / ... (3 episodes, 1959-1962) |
 | Murray Matheson | ... | Colley / ... (3 episodes, 1961-1963) |
 | Joseph Bernard | ... | Colby / ... (3 episodes, 1960-1962) |

| Jean Stapleton | ... | Marilyn Konish / ... (3 episodes, 1961-1963) |

| Audra Lindley | ... | Grace Youngham / ... (3 episodes, 1961-1962) |
 | Victor Junquera | ... | Dr. Miguel Cabrio / ... (3 episodes, 1961-1963) |
 | Bibi Osterwald | ... | Grace / ... (3 episodes, 1961-1963) |
 | Anita Dangler | ... | Maidie Craven / ... (3 episodes, 1961-1963) |
 | Sam Capuano | ... | Anthony Angelo / ... (3 episodes, 1961) |

| Sylvia Miles | ... | Ginger Barr / ... (3 episodes, 1961-1963) |
 | Duke Farley | ... | George Silver / ... (3 episodes, 1960-1963) |
 | Gerry Jedd | ... | Marta Licosa / ... (3 episodes, 1961) |
 | Ralph Stantley | ... | Hagerton / ... (3 episodes, 1958-1963) |
 | Ben Yaffee | ... | Eyewitness / ... (3 episodes, 1959-1963) |
 | Florence Anglin | ... | Mrs. Alvin Purely / ... (3 episodes, 1959-1962) |
 | Dan Morgan | ... | Juror / ... (3 episodes, 1961-1963) |
 | Mary James | ... | Lady Designer / ... (3 episodes, 1961-1962) |
 | Jamie Smith | ... | Babe Maning / ... (3 episodes, 1961) |
 | Joe Warren | ... | Sam / ... (3 episodes, 1961) |
 | Arnold Soboloff | ... | Giacovetti / ... (3 episodes, 1962) |
 | Lester Mack | ... | Bum #2 / ... (3 episodes, 1958-1961) |
 | Joseph Campanella | ... | Detective Dutton / ... (3 episodes, 1961-1962) |
 | Robert Elross | ... | Morgue Doctor / ... (3 episodes, 1960-1961) |
 | Peter Turgeon | ... | Attorney Kongdon / ... (3 episodes, 1961-1962) |
 | Mickey Freeman | ... | Bartender / ... (3 episodes, 1961-1963) |
 | Carmen Costi | ... | 1st Patrolman / ... (3 episodes, 1961-1963) |
 | John Seymour | ... | Lawyer 3 / ... (3 episodes, 1961-1963) |
 | Aristide Sigismondi | ... | Don Pugnacio / ... (3 episodes, 1961) |
 | George L. Smith | ... | Doctor / ... (3 episodes, 1961-1963) |

| Frank Sutton | ... | Aces / ... (3 episodes, 1958-1961) |
 | Michael Conrad | ... | Firing Range Officer / ... (3 episodes, 1959-1960) |
 | Rosetta Veneziano | ... | Mrs. Arcaro - Frank's Mother / ... (3 episodes, 1962) |
 | Mike Kellin | ... | Anton / ... (3 episodes, 1959-1963) |

| Clifton James | ... | George Haskel / ... (3 episodes, 1959-1960) |

| Martin Sheen | ... | Counterman / ... (3 episodes, 1962) |
 | Louis Guss | ... | Angie / ... (3 episodes, 1959-1962) |
 | Charles Tyner | ... | Apples / ... (3 episodes, 1961-1963) |
 | Tom Ahearne | ... | Monty / ... (3 episodes, 1958-1961) |
 | Donald Cohen | ... | Ely - Informant / ... (3 episodes, 1958-1960) |
 | Bill Lazarus | ... | Dr. Arvid / ... (3 episodes, 1960-1962) |
 | Ed Simon | ... | Recorder / ... (3 episodes, 1959-1961) |
 | Brandon Maggart | ... | Mullet / ... (3 episodes, 1961-1962) |
 | Kenneth Konopka | ... | Bartender / ... (3 episodes, 1961-1963) |
 | Susan Melvin | ... | Jenny / ... (3 episodes, 1960-1961) |
 | Robert Allen | ... | Chief Attorney / ... (3 episodes, 1960-1962) |
 | Noah Keen | ... | Bellevue Doctor / ... (3 episodes, 1960-1961) |
 | Richard Ward | ... | Lee - Shoeshine Man / ... (3 episodes, 1960-1963) |
 | Myron McCormick | ... | Albert Blakely / ... (2 episodes, 1961-1962) |

| Harry Guardino | ... | Ben Giovanni / ... (2 episodes, 1959-1963) |

| Eli Wallach | ... | Det. Bane / ... (2 episodes, 1960-1962) |

| David Janssen | ... | Blair Cameron / ... (2 episodes, 1961-1963) |

| Theodore Bikel | ... | Dr. Stanley Wilford / ... (2 episodes, 1961-1962) |
 | Arnold Merritt | ... | Jimmy Barrick / ... (2 episodes, 1958-1959) |
 | Burt Brinckerhoff | ... | Danny Keyling / ... (2 episodes, 1960-1961) |

| Maureen Stapleton | ... | Abbey Bick / ... (2 episodes, 1961-1962) |

| William Shatner | ... | Maung Tun / ... (2 episodes, 1962) |

| Keir Dullea | ... | Joey Ross / ... (2 episodes, 1961-1963) |

| Marisa Pavan | ... | Francesca / ... (2 episodes, 1961-1963) |

| Nina Foch | ... | Kitty Lamson / ... (2 episodes, 1961-1962) |

| Keenan Wynn | ... | Bodram / ... (2 episodes, 1961-1962) |
 | Madeleine Sherwood | ... | Grace Paraskis / ... (2 episodes, 1962-1963) |

| Diana Douglas | ... | Hilda Wallace / ... (2 episodes, 1959) |
 | Phyllis Hill | ... | Betty Fleischman / ... (2 episodes, 1959) |

| Murray Hamilton | ... | D.A. Thomas 'Tommy' Stevenson / ... (2 episodes, 1960-1961) |

| Albert Dekker | ... | Herbert B. Warick / ... (2 episodes, 1961) |

| Ruth White | ... | Mama Ganoulian / ... (2 episodes, 1961) |

| Sandy Dennis | ... | Eleanor Ann Hubber / ... (2 episodes, 1962-1963) |
 | Pilar Seurat | ... | Gloria Chan / ... (2 episodes, 1962) |

| Norma Crane | ... | Fay Roberts / ... (2 episodes, 1959-1961) |

| Geraldine Fitzgerald | ... | Brigid Delito / ... (2 episodes, 1961-1962) |
 | Betty Field | ... | Mrs. Brent / ... (2 episodes, 1961) |

| Eileen Heckart | ... | Mildred Pepper / ... (2 episodes, 1962-1963) |
 | Joanne Linville | ... | Eunice Vale / ... (2 episodes, 1962-1963) |

| Akim Tamiroff | ... | Demetru Lapesku / ... (2 episodes, 1962-1963) |
 | Barbara Lord | ... | Dee Vale / ... (2 episodes, 1958-1961) |
 | Rudy Bond | ... | Lt. Mike Daniels / ... (2 episodes, 1958-1959) |
 | Irene Dailey | ... | Auntie Maud / ... (2 episodes, 1959-1962) |
 | Jean Muir | ... | Mrs. Kling - Principal / ... (2 episodes, 1959-1962) |

| Vincent Gardenia | ... | Crudelli / ... (2 episodes, 1959) |
 | Rochelle Oliver | ... | Cora Gary / ... (2 episodes, 1959) |

| Walter Matthau | ... | Dr. Max Lewine / ... (2 episodes, 1960-1962) |
 | John Baragrey | ... | David Clark Fairport / ... (2 episodes, 1960-1961) |

| George Voskovec | ... | Jack Selken / ... (2 episodes, 1961-1962) |
 | Philip Abbott | ... | Charles Alvis / ... (2 episodes, 1961) |
 | Paul Hartman | ... | Ben Stringfellow / ... (2 episodes, 1961) |

| Paul Richards | ... | Joseph Highmark / ... (2 episodes, 1962-1963) |

| Carroll O'Connor | ... | Owen Oliver / ... (2 episodes, 1962) |
 | Rocky Graziano | ... | Eddie Gibbs / ... (2 episodes, 1959) |
 | Guy Raymond | ... | Augie / ... (2 episodes, 1959) |

| Kurt Kasznar | ... | Alcibiades Munos / ... (2 episodes, 1961-1963) |
 | Augusta Merighi | ... | Celia / ... (2 episodes, 1961-1963) |

| Lilia Skala | ... | Anna Bognar / ... (2 episodes, 1961-1962) |
 | William Hinnant | ... | Fred / ... (2 episodes, 1961) |
 | Herschel Bernardi | ... | Gus Slate / ... (2 episodes, 1962) |
 | Tarry Green | ... | Jocko - Gang Leader / ... (2 episodes, 1958-1961) |

| Alex Cord | ... | Dick Wilkes / ... (2 episodes, 1962-1963) |

| Dana Elcar | ... | Al Borris / ... (2 episodes, 1962-1963) |
 | James Patterson | ... | Carver / ... (2 episodes, 1962-1963) |
 | Pat DeSimone | ... | Arturo / ... (2 episodes, 1958-1962) |
 | Thomas A. Carlin | ... | Father Meyler / ... (2 episodes, 1961) |
 | Joseph Leon | ... | Bartender / ... (2 episodes, 1962-1963) |
 | Irene Kane | ... | Betty Keller / ... (2 episodes, 1958-1963) |
 | Daniel Ocko | ... | Julio Marsatti / ... (2 episodes, 1958-1961) |
 | George Lambert | ... | Hanson - Welfare Dept. Supervisor / ... (2 episodes, 1959-1962) |
 | Frieda Altman | ... | Mrs. Howard / ... (2 episodes, 1959-1961) |
 | Marge O'Neill | ... | Eve / ... (2 episodes, 1960-1963) |

| Edward Asner | ... | Lt. Vince Busti / ... (2 episodes, 1961) |
 | Russell Hardie | ... | Chief Guard / ... (2 episodes, 1962-1963) |
 | Michael Gorrin | ... | Father Thaddeus / ... (2 episodes, 1962) |
 | Richard X. Slattery | ... | Police Officer #2 / ... (2 episodes, 1959-1961) |

| William Daniels | ... | Harry Culverin / ... (2 episodes, 1961-1962) |
 | Graham Jarvis | ... | Mr. Denton / ... (2 episodes, 1961-1962) |
 | Than Wyenn | ... | Judge Henley / ... (2 episodes, 1961) |
 | William LeMassena | ... | Mr. Hanley / ... (2 episodes, 1962-1963) |
 | John Gibson | ... | City Editor / ... (2 episodes, 1958-1962) |
 | Martha Greenhouse | ... | Evelyn Roth / ... (2 episodes, 1959-1961) |
 | Norma Connolly | ... | Pearl Wystemski / ... (2 episodes, 1960-1963) |

| Dustin Hoffman | ... | Finney / ... (2 episodes, 1961-1963) |
 | Epy Baca | ... | Building Manager / ... (2 episodes, 1961-1962) |
 | Jim Boles | ... | Sorin / ... (2 episodes, 1961-1962) |

| Benedict Herrman | ... | Allen Clifford / ... (2 episodes, 1961-1962) |

| Louis Zorich | ... | Manos / ... (2 episodes, 1962-1963) |
 | Harry Davis | ... | Foreman / ... (2 episodes, 1958-1963) |
 | Mel Ruick | ... | Mr. Harding / ... (2 episodes, 1959-1962) |
 | Sybil Bowan | ... | Informant / ... (2 episodes, 1960-1962) |
 | Lidia Prochnicka | ... | Betty Barris / ... (2 episodes, 1961-1962) |
 | Gerald Hiken | ... | Arthur William Gerald / ... (2 episodes, 1961) |
 | Dirk Kooiman | ... | Giorgi Bognar / ... (2 episodes, 1959-1961) |

| Patricia Bosworth | ... | Betty Harkness / ... (2 episodes, 1960-1961) |
 | Victor Thorley | ... | Harrison / ... (2 episodes, 1960-1961) |
 | Patricia Wheel | ... | Carol Fleischman / ... (2 episodes, 1961-1962) |

| Barnard Hughes | ... | 1st Reporter / ... (2 episodes, 1962-1963) |
 | Philip Sterling | ... | Job Advisor / ... (2 episodes, 1962) |
 | Ray Singer | ... | Guard - Armored Car / ... (2 episodes, 1958-1959) |

| Arlene Golonka | ... | Alma Corgi / ... (2 episodes, 1961-1963) |
 | Jerry Jarrett | ... | Baron / ... (2 episodes, 1961-1963) |
 | Pierre Epstein | ... | DeLage / ... (2 episodes, 1961-1962) |
 | Stuart Germain | ... | Mr. Shale / ... (2 episodes, 1961-1962) |
 | Carolyn Groves | ... | 2nd Roommate / ... (2 episodes, 1962-1963) |
 | Janet Fox | ... | Woman Patient / ... (2 episodes, 1962) |
 | Frank Marth | ... | Albert Garvin / ... (2 episodes, 1961-1962) |
 | Lotte Palfi Andor | ... | Bridesmaid / ... (2 episodes, 1961-1962) |
 | Vic Ramos | ... | Gino / ... (2 episodes, 1960-1961) |
 | Tommy Norden | ... | Blind Boy #1 / ... (2 episodes, 1961-1962) |
 | Ruth Volner | ... | Rosa - Cook / ... (2 episodes, 1961-1962) |
 | Monroe Arnold | ... | Ben Fenton / ... (2 episodes, 1961) |

| Lincoln Kilpatrick | ... | Bailiff / ... (2 episodes, 1962-1963) |
 | Louis Sorin | ... | Old Man in Store / ... (2 episodes, 1961) |
 | Lou Gilbert | ... | Mr. Green / ... (2 episodes, 1962) |
 | Ed Preble | ... | 1st Businessman / ... (2 episodes, 1962) |
 | Maureen Drew | ... | Nurse (2 episodes, 1961) |
 | Joseph Sullivan | ... | Arthur Flake / ... (2 episodes, 1962) |
 | Tommy Halloran | ... | Boy / ... (2 episodes, 1960-1961) |
 | Harrison Dowd | ... | Bum #4 / ... (2 episodes, 1961-1962) |
 | Maxwell Glanville | ... | Desk Guard / ... (2 episodes, 1962-1963) |
 | Rene Olmeda | ... | Blind Boy / ... (2 episodes, 1962) |
 | Godfrey Cambridge | ... | Detective Carlisle / ... (2 episodes, 1960-1962) |
 | Nicholas Saunders | ... | George Herner / ... (2 episodes, 1960-1961) |
 | Gar Smith | ... | 1st Doorman / ... (2 episodes, 1961-1963) |
 | Brendan Fay | ... | Cabbie / ... (2 episodes, 1962-1963) |

| Diane Ladd | ... | Kathie Mills / ... (2 episodes, 1958-1959) |
 | Will Kuluva | ... | Farmer / ... (2 episodes, 1959) |
 | Eugenie Leontovich | ... | Katina Cretias / ... (2 episodes, 1958-1961) |
 | Paul Alberts | ... | Kettleman - Welfare Dept. Marcher / ... (2 episodes, 1959-1961) |
 | Chris Gampel | ... | Cab Driver / ... (2 episodes, 1961-1963) |
 | Bo Enivel | ... | Mizotti - Milkman / ... (2 episodes, 1958-1961) |

| Gilbert Mack | ... | Mr. Lombardi - Italian Owner / ... (2 episodes, 1959-1963) |
 | Vincent Van Lynn | ... | Detective Ted / ... (2 episodes, 1959) |
 | Sam Raskyn | ... | Bellboy / ... (2 episodes, 1960-1961) |
 | William Duell | ... | Desk Clerk / ... (2 episodes, 1961) |
 | Joseph Beruh | ... | Arcaro's Brother / ... (2 episodes, 1962) |
 | Marilyn Lovell | ... | Ginny Padgett / ... (2 episodes, 1962-1963) |
 | Frank Tweddell | ... | Bank Manager / ... (2 episodes, 1961-1962) |
 | Albert T. Viola | ... | Cabby / ... (2 episodes, 1961-1962) |

| Doris Roberts | ... | Miss Tresant (2 episodes, 1962-1963) |

| Bruce Dern | ... | Hollis / ... (2 episodes, 1961) |
 | Gerome Ragni | ... | Hood #2 / ... (2 episodes, 1960-1961) |

| Jessica Walter | ... | Girl / ... (2 episodes, 1962-1963) |
 | Rickey Sloane | ... | Boy in Kid Gang / ... (2 episodes, 1961-1962) |
 | Teno Pollick | ... | Anders / ... (2 episodes, 1961) |