| New York City policewoman Casey Jones' assignment to fight crime often entails her going undercover in some of the seediest and most dangerous parts of the city. Decoy is a groundbreaking American crime drama television series created for syndication and initially broadcast from October 14, 1957, to July 7, 1958, with thirty-nine 30-minute black-and-white episodes. It was the first American police series with a female protagonist. Many Decoy episodes are in the public domain. | 
| Name | Character | Episodes | 
|---|---|---|
| Beverly Garland | Casey Jones | 39 | 
| Peter Falk | Fred Dana | 1 | 
| Suzanne Pleshette | Wendy Jenkins | 1 | 
| Martin Balsam | Nick Santos | 1 | 
| Diane Ladd | Selma Richmond | 1 | 
| Albert Dekker | Otto Flagler | 1 | 
| Ludwig Donath | Fred | 1 | 
| Ludwig Donath | 'Knish' Levin | 1 | 
| Tomas Milian | Juan Ortega | 1 | 
| Clifton James | Patrolman Raymond | 1 | 
| William Hickey | Billy | 1 | 
| Larry Hagman | Kenneth Davidson | 1 | 
| Barbara Barrie | Anne | 1 | 
| Barbara Barrie | Mrs. Foley | 1 | 
| Lois Nettleton | Lois Gray | 1 | 
| Lois Nettleton | Lois Bergen | 1 | 
| Vincent Gardenia | Bull | 1 | 
| Joe Silver | Bennie, Carnival Worker | 1 | 
| Joanne Linville | Molly Orchid | 1 | 
| Bert Freed | Lieutenant Rosenberg | 1 | 
| Frank Maxwell | Detective Jergen | 1 | 
| Kay Medford | Georgia | 1 | 
| Colleen Dewhurst | Taffy Connor | 1 | 
| Philip Sterling | Sergeant Basilio | 1 | 
| Miriam Colon | Maria Tristeza | 1 | 
| Edith Atwater | Lily Flagler | 1 | 
| Ed Asner | Sergeant | 1 | 
| Mason Adams | Bill Wendover | 1 | 
| Simon Oakland | Lieutenant | 1 | 
| Simon Oakland | Sgt. Steve Necclo | 1 | 
| Al Lewis | Chi Chi | 1 | 
| Alfred Ryder | Lester Ringle | 1 | 
| Leo Penn | Lt. Larry Hayes | 1 | 
| Milton Selzer | 1st Officer Denning | 1 | 
| John McLiam | Mike Foley | 1 | 
| Joseph Campanella | Sergeant | 1 | 
| Michael Strong | Johnny Troy | 1 | 
| Frank Overton | Bergen | 1 | 
| Henry Beckman | Frank Bandiner | 1 | 
| Clifford David | Joe | 1 | 
| Betty Garde | Landlady | 1 | 
| George Mitchell | Torrino | 1 | 
| Frank Campanella | Lieutenant Torri | 1 | 
| Frank Campanella | Lieutenant Harris | 1 | 
| Frank Campanella | Lieutenant Cella | 1 | 
| Richard Davalos | Danny Dombrowsky | 1 | 
| Michael Tolan | Mike Bergen | 1 | 
| Leonard Stone | 2nd Cop | 1 | 
| Frank Sutton | The Phoner | 1 | 
| Frank Sutton | Hecky | 1 | 
| Louis Guss | Hotel Manager | 1 | 
| Louis Guss | Augie, Henchman | 1 | 
| Bruce Gordon | Lt. Andy Andrews | 1 | 
| Joshua Shelley | Willie Graff | 1 | 
| Bill Quinn | Magraw | 1 | 
| Bernard Kates | Victor Bernard | 1 | 
| Mary Michael | Mrs. O'Connell | 1 | 
| Mary Michael | Mrs. Frost | 1 | 
| Arthur Batanides | Herbert Carson | 1 | 
| Phyllis Newman | Joanne Kittredge | 1 | 
| Phyllis Newman | Elsa Kramer | 1 | 
| David Bauer | Lieutenant Fletcher | 1 | 
| Richard Ward | Alex | 1 | 
| Irene Dailey | Millie Baker | 1 | 
| Arch Johnson | Det. Sam Donovan | 1 | 
| Ray Reinhardt | Jack Wilson | 1 | 
| John Kellogg | Lieutenant Davis | 1 | 
| Lenka Peterson | Dorothy Boyer | 1 | 
| Fred Sadoff | Paul Williams | 1 | 
| Madeleine Sherwood | Mary Waleski | 1 | 
| Curt Conway | Ransome | 1 | 
| Curt Conway | Lt. Harding | 1 | 
| Robert McQueeney | O'Brien | 1 | 
| Peggy Feury | Paula Shayne | 1 | 
| Jean Alexander | Gertrude Brewer | 1 | 
| Eleanor Phelps | Miss Deene | 1 | 
| Lilia Skala | Anna Dombrowsky | 1 | 
| Thomas A. Carlin | John Osler | 1 | 
| James Mitchell | Frank | 1 | 
| Mike Kellin | Harry Keenan | 1 | 
| Zohra Lampert | Anne | 1 | 
| Zohra Lampert | Norma Hart | 1 | 
| Bill Hayes | Gordon Troy | 1 | 
| Ruth McDevitt | Mrs. Graff | 1 |