
| Boris Karloff | ... | Himself / ... (66 episodes, 1960-1962) |
 | Richard Peel | ... | Inspector ("The Mask of Medusa") / ... (6 episodes, 1960-1962) |
 | Henry Daniell | ... | Count Alexander Cagliostro / ... (5 episodes, 1960-1961) |
 | Paul Newlan | ... | Joe Henshaw / ... (4 episodes, 1960-1961) |
 | J. Pat O'Malley | ... | Street Singer / ... (4 episodes, 1961-1962) |
 | Ed Nelson | ... | Bernie / ... (4 episodes, 1960-1961) |
 | Peter Brocco | ... | Major Domo ("A Terribly Strange Bed") / ... (4 episodes, 1961-1962) |
 | David Frankham | ... | Alan Mervyn / ... (4 episodes, 1961-1962) |
 | Doris Lloyd | ... | Dame Alice Mervyn / ... (4 episodes, 1961-1962) |
 | Linda Watkins | ... | Arabella Foote / ... (3 episodes, 1960-1962) |
 | Bernard Fein | ... | Lester Clyne / ... (3 episodes, 1961-1962) |
 | Pamela Curran | ... | Dancer / ... (3 episodes, 1961-1962) |
 | Audrey Swanson | ... | Nurse / ... (3 episodes, 1960-1961) |
 | Ralph Clanton | ... | Dr. John Grail / ... (3 episodes, 1960-1962) |
 | Ottola Nesmith | ... | Old Laura Bellman / ... (3 episodes, 1961) |

| Patricia Barry | ... | Louise Logan / ... (3 episodes, 1960-1962) |
 | Alan Caillou | ... | Police Superintendent / ... (3 episodes, 1960-1962) |
 | Audrey Dalton | ... | Meg O'Danagh Wheeler / ... (3 episodes, 1960-1962) |
 | Iris Bristol | ... | Helen Tate / ... (3 episodes, 1960-1961) |
 | Mollie Glessing | ... | Agnes / ... (3 episodes, 1960-1961) |
 | Alan Napier | ... | Attorney / ... (3 episodes, 1960-1961) |
 | Richard Reeves | ... | Truck Driver / ... (3 episodes, 1960-1961) |
 | Edward Andrews | ... | Frank Logan / ... (3 episodes, 1961-1962) |
 | Ronald Howard | ... | Dr. Edward Stone / ... (3 episodes, 1961-1962) |
 | Kendrick Huxham | ... | Andrews / ... (3 episodes, 1961-1962) |
 | Ken Lynch | ... | Joe Thorp / ... (3 episodes, 1961-1962) |
 | Chet Stratton | ... | Alfred Marvin / ... (3 episodes, 1961-1962) |

| William Shatner | ... | George Craig / ... (3 episodes, 1961) |
 | Reggie Nalder | ... | Andrew Bentley / ... (2 episodes, 1961) |
 | Constance Ford | ... | Connie Walworth / ... (2 episodes, 1960) |
 | John Newland | ... | Ellis Corbett / ... (2 episodes, 1961) |
 | John Baragrey | ... | Dr. Ralph Mitchell / ... (2 episodes, 1960-1962) |
 | Antoinette Bower | ... | Annette Jacquelin / ... (2 episodes, 1961-1962) |
 | Charles Aidman | ... | George / ... (2 episodes, 1960-1961) |
 | Henry Hunter | ... | Professor Angus Holden (2 episodes, 1961-1962) |

| Richard Hale | ... | Lars Eisenhart / ... (2 episodes, 1961-1962) |
 | Vladimir Sokoloff | ... | Janitor / ... (2 episodes, 1961-1962) |
 | George Mitchell | ... | Doc Mulloy / ... (2 episodes, 1960-1961) |
 | Joan Tompkins | ... | Ellen Grimm / ... (2 episodes, 1960-1961) |
 | Basil Howes | ... | Prof. Charing (2 episodes, 1961-1962) |
 | Ken Renard | ... | Jacob / ... (2 episodes, 1961) |
 | Jocelyn Brando | ... | Emma Snyder / ... (2 episodes, 1960-1962) |
 | Billy Beck | ... | Cyril, Chauffeur / ... (2 episodes, 1961-1962) |
 | Terence de Marney | ... | Amos Wilder / ... (2 episodes, 1961) |
 | Jean Engstrom | ... | Anne Grant / ... (2 episodes, 1960-1962) |
 | Victor Buono | ... | Carolik / ... (2 episodes, 1960-1961) |
 | Sam Gilman | ... | Officer Dutton / ... (2 episodes, 1961) |
 | Russ Bender | ... | Arresting Officer (2 episodes, 1960-1961) |
 | George Kane | ... | Harry Jervis / ... (2 episodes, 1961) |
 | Gil Perkins | ... | Henchman Eddie (2 episodes, 1960-1961) |
 | Alan Baxter | ... | Sergeant Dane / ... (2 episodes, 1960-1962) |
 | Clancy Cooper | ... | Chief Constable / ... (2 episodes, 1960-1962) |
 | Anthony Jochim | ... | Alex / ... (2 episodes, 1960-1962) |

| Norman Leavitt | ... | Charlie, first Bartender / ... (2 episodes, 1960-1962) |
 | Dayton Lummis | ... | Clarence / ... (2 episodes, 1960-1962) |

| Lin McCarthy | ... | Frank Clyde / ... (2 episodes, 1960-1962) |
 | Ray Montgomery | ... | Bill / ... (2 episodes, 1960-1962) |

| Mary Tyler Moore | ... | Mary Snyder / ... (2 episodes, 1960-1962) |
 | Warren Oates | ... | Benny / ... (2 episodes, 1960-1962) |
 | Jack Weston | ... | Edward Dean / ... (2 episodes, 1960-1962) |
 | Terry Burnham | ... | Joan Wilson / ... (2 episodes, 1960-1961) |
 | Seymour Green | ... | Sir John Herbert (2 episodes, 1960-1961) |
 | Pitt Herbert | ... | Fred, Bartender / ... (2 episodes, 1960-1961) |
 | Joanna Heyes | ... | Caroline Ransom / ... (2 episodes, 1960-1961) |
 | Bethel Leslie | ... | Ann Merriweather / ... (2 episodes, 1960-1961) |
 | Tom Nolan | ... | Hank Hattering / ... (2 episodes, 1960-1961) |
 | Lillian O'Malley | ... | The Housekeeper / ... (2 episodes, 1960-1961) |
 | Abraham Sofaer | ... | Gus Kostopulas / ... (2 episodes, 1960-1961) |
 | Olive Sturgess | ... | Bess Pettit / ... (2 episodes, 1960-1961) |
 | Harry Townes | ... | Mario Asparos / ... (2 episodes, 1960-1961) |
 | Fred Sherman | ... | Bud / ... (2 episodes, 1960) |
 | Jim Bannon | ... | Sheriff / ... (2 episodes, 1961-1962) |
 | Hurley Bell | ... | The Cowhand / ... (2 episodes, 1961-1962) |
 | Barry Bernard | ... | Chester #1 (2 episodes, 1961-1962) |
 | Clem Bevans | ... | Obed / ... (2 episodes, 1961-1962) |
 | Mary Grace Canfield | ... | Ally Rose / ... (2 episodes, 1961-1962) |
 | Eduardo Ciannelli | ... | General De La Varra / ... (2 episodes, 1961-1962) |
 | Booth Colman | ... | Hotel Desk Clerk / ... (2 episodes, 1961-1962) |
 | Maurice Dallimore | ... | Baker #1 / ... (2 episodes, 1961-1962) |
 | Jack Greening | ... | Inspector Rogers / ... (2 episodes, 1961-1962) |
 | James Griffith | ... | Ed Brandies / ... (2 episodes, 1961-1962) |
 | Kevin Hagen | ... | Arno Lunt / ... (2 episodes, 1961-1962) |
 | Henry Jones | ... | Carl Somers / ... (2 episodes, 1961-1962) |
 | Diki Lerner | ... | Hans / ... (2 episodes, 1961-1962) |
 | Jeanette Nolan | ... | Granny Harrod / ... (2 episodes, 1961-1962) |
 | Lucy Prentis | ... | Peggy Duncan (2 episodes, 1961-1962) |
 | Alejandro Rey | ... | Robert Lamont / ... (2 episodes, 1961-1962) |
 | K.T. Stevens | ... | Olive Guthrie / ... (2 episodes, 1961-1962) |
 | Vaughn Taylor | ... | Pontifex Tundifer / ... (2 episodes, 1961-1962) |
 | Joan Tetzel | ... | Marian Farrington / ... (2 episodes, 1961-1962) |
 | David Whorf | ... | Johnny Branner / ... (2 episodes, 1961-1962) |
 | Than Wyenn | ... | Vane (2 episodes, 1961-1962) |
 | Elizabeth Allen | ... | Dorothy Lyndon / ... (2 episodes, 1961) |
 | John Carradine | ... | Jason Longfellow / ... (2 episodes, 1961) |
 | Robert Cornthwaite | ... | Mr. Phillips / ... (2 episodes, 1961) |
 | Richard Flato | ... | Croupier ("A Terribly Strange Bed") / ... (2 episodes, 1961) |
 | Peter Forster | ... | George Mervyn / ... (2 episodes, 1961) |
 | Sarah Marshall | ... | Elspeth Clewer / ... (2 episodes, 1961) |
 | Murray Matheson | ... | Andrew Lawrence / ... (2 episodes, 1961) |
 | Patricia Medina | ... | Nadja / ... (2 episodes, 1961) |
 | Louis Mercier | ... | Butler / ... (2 episodes, 1961) |
 | Robert Middleton | ... | Monsieur de Paris / ... (2 episodes, 1961) |
 | Jennifer Raine | ... | Helen Abercrombie / ... (2 episodes, 1961) |
 | Avis Scott | ... | Estelle Webber / ... (2 episodes, 1961) |
 | Robert Stevenson | ... | Dr. Lascoe (2 episodes, 1961) |
 | Gilchrist Stuart | ... | Train Guard ("The Extra Passenger") (2 episodes, 1961) |
 | Nelson Welch | ... | Doctor / ... (2 episodes, 1961) |
 | Walter Burke | ... | Croxton / ... (2 episodes, 1962) |
 | Sean McClory | ... | Patrick Galt / ... (2 episodes, 1962) |
 | Eve McVeagh | ... | Bonnie / ... (2 episodes, 1962) |