| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Alfred Hayes | Crew | Writing | Writer | 1 |
Ben Roberts | Crew | Production | Executive Producer, Screenplay | 2 |
David Karp | Crew | Writing | Screenplay | 1 |
Edward M. Abroms | Crew | Directing | Director | 3 |
 George McCowan | Crew | Directing | Director | 6 |
Gerald Mayer | Crew | Directing | Director | 1 |
Herbert Hirschman | Crew | Directing | Director | 1 |
Ivan Goff | Crew | Production | Producer, Executive Producer | 14 |
Lee Sheldon | Crew | Writing | Writer | 1 |
 Michael O'Herlihy | Crew | Directing | Director | 1 |
Peter Allan Fields | Crew | Writing | Screenplay, Writer | 14 |
 Rex Stout | Crew | Writing | Novel | 14 |
Seeleg Lester | Crew | Writing | Writer | 1 |
Dick Nelson | Crew | Writing | Writer | 1 |
Peter Nasco | Crew | Writing | Screenplay | 1 |
John A. Fegan Jr. | Crew | Production | Associate Producer | 2 |
 Allan Miller | Cast | Actor | Inspector Cramer | 14 |
 Anthony Costello | Cast | Actor | Charles Ceretti | 1 |
 Bruce Gray | Cast | Actor | 1 | |
 Burr DeBenning | Cast | Actor | 1 | |
 Carlene Watkins | Cast | Actress | Jean Estey | 1 |
 Cesare Danova | Cast | Actor | 1 | |
 Char Fontane | Cast | Actress | Violet Crown | 1 |
 Charles Cioffi | Cast | Actor | 1 | |
 David Hedison | Cast | Actor | 1 | |
 David Hollander | Cast | Actor | Pete Drossos | 2 |
 Delta Burke | Cast | Actress | 1 | |
 Diana Douglas | Cast | Actress | Sarah Rackham | 1 |
 Diane Shalet | Cast | Actress | 1 | |
 Ed Gilbert | Cast | Actor | 1 | |
 Ed Lauter | Cast | Actor | Clay Baylor | 1 |
 Eddie Firestone | Cast | Actor | Willie | 1 |
 Fred Sadoff | Cast | Actor | 1 | |
 George Voskovec | Cast | Actor | Fritz Brenner | 14 |
 George Wyner | Cast | Actor | Saul Panzer | 14 |
 H.M. Wynant | Cast | Actor | Eddie Meeker | 1 |
 Irene Miracle | Cast | Actress | 1 | |
 James Gallery | Cast | Actor | 1 | |
James R. Parkes | Cast | Actor | Barry Green | 1 |
 Jennifer Leak | Cast | Actress | 1 | |
 Joey Forman | Cast | Actor | 1 | |
 John C. Reilly | Cast | Actor | 1 | |
 John Ericson | Cast | Actor | Arthur Poor | 1 |
 John Petlock | Cast | Actor | Michael Doran | 1 |
 John Randolph | Cast | Actor | 1 | |
 John de Lancie | Cast | Actor | 1 | |
 Jon Lormer | Cast | Actor | The Butler | 1 |
 Juanin Clay | Cast | Actress | 1 | |
 Julie Carmen | Cast | Actress | 1 | |
 Kale Browne | Cast | Actor | 1 | |
 Katherine Justice | Cast | Actress | Angela Bell | 1 |
 Kenneth Tigar | Cast | Actor | 1 | |
 Lana Wood | Cast | Actress | 1 | |
 Lee Horsley | Cast | Actor | Archie Goodwin | 14 |
 Liam Sullivan | Cast | Actor | Paul Kessler | 1 |
 Linden Chiles | Cast | Actor | Calvin Leeds | 1 |
 Marilyn Tokuda | Cast | Actress | The Nurse | 1 |
 Mary Frann | Cast | Actress | 1 | |
 Michael Currie | Cast | Actor | 1 | |
 Michael Pataki | Cast | Actor | 1 | |
 Norman Alden | Cast | Actor | 1 | |
 Paul Koslo | Cast | Actor | Daniel Masters | 1 |
Penelope Windust | Cast | Actress | Laura Fromm | 1 |
 Ramon Bieri | Cast | Actor | Leo Crown | 1 |
 Rhoda Gemignani | Cast | Actress | Mrs. Drossos | 1 |
 Richard Anderson | Cast | Actor | 1 | |
 Robert Coote | Cast | Actor | Theodore Horstmann | 14 |
 Robert Loggia | Cast | Actor | 1 | |
 Simone Griffeth | Cast | Actress | 1 | |
 Stephen Elliott | Cast | Actor | 1 | |
 Ted Hartley | Cast | Actor | 1 | |
 Thaao Penghlis | Cast | Actor | 1 | |
 Tim Thomerson | Cast | Actor | 1 | |
 Walter Brooke | Cast | Actor | 1 | |
 William Conrad | Cast | Actor | Nero Wolfe | 14 |
Jenny Sullivan | Cast | Actress | 1 | |
 Roz Kelly | Cast | Actress | Corey Baylor | 1 |
 Maria Mayenzet | Cast | Actress | 1 | |
Eddie Fontaine | Cast | Actor | 1 | |
Dick Ryal | Cast | Herbie | 1 | |
Gail Cameron | Cast | Doctor | 1 | |
| Person | Type | Job | Role(s) | Episodes |
