Art Director: Bill Ross
Assistant Director
- Ted Butcher: The Heir Apparent; The Contender (Part One); The Contender (Part Two); The Cardinal; The Elixir; The Bargain; The Freeze; The System
- Victor Vallejo: The Mercenaries; The Execution; The Diplomat; The Play; The Exchange; The Mind of Stefan Miklos; The Test Case; The Glass Cage; Doomsday; The Bunker (Part 1); The Bunker (Part 2)
- Rowe Wallerstein: Live Bait
- Jim Myers: Nitro; Nicole
- Al Kraus: The Vault; Illusion
- Michael P. Schoenbrun: The Interrogator
Assistant to the Executive Producer: Philip Fehrle
Casting
- Joseph D’Agosta
- William J. Kenney: The Bargain; The Freeze; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; Live Bait; The Bunker (Part 1); The Bunker (Part 2); Nitro; Nicole; The Vault; Illusion; The Interrogator
Costume Supervisor (Women): Sabine Manela
Director of Photography
- Andrew J. McIntyre: The Heir Apparent; The Mercenaries; The Diplomat
- Keith C. Smith: The Contender (Part One); The Contender (Part Two); The Execution; The Cardinal; The Elixir; The Play; The Bargain; The Freeze; The Exchange; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; The Bunker (Part 1); The Bunker (Part 2); Nitro; Nicole; The Vault; Illusion
- Gert Andersen: Live Bait
Editorial Coordinator
- Jerry Taylor: The Cardinal; The Elixir; The Diplomat; The Play; The Bargain; The Freeze; The Exchange; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; Live Bait; The Bunker (Part 1); The Bunker (Part 2); Nitro; Nicole; The Vault; Illusion; The Interrogator
Film Editor
- David Wages: The Heir Apparent; The Contender (Part Two); The Play; The Bargain; The System; The Bunker (Part 1); Nicole
- Robert L. Swanson: The Contender (Part One); The Mercenaries
- John Loeffler: The Execution; The Elixir; The Diplomat; The Freeze; Live Bait; Nitro; The Interrogator
- William Cairncross: The Cardinal; The Exchange; The Test Case; Doomsday
- Jodie Copelan: The Mind of Stefan Miklos; The Glass Cage; The Bunker (Part 2); Illusion
- Jerry Taylor: The Vault
Hairstylist: Adele Taylor
Makeup Artist: Bob Dawn
Music Composed and Conducted by
- Lalo Schifrin: The Heir Apparent; The Contender (Part One); The Contender (Part Two)
- Robert Drasnin: The Mercenaries; The Play
- Jerry Fielding: The Execution; The Cardinal; The Exchange
- Gerald Fried: The Diplomat
- Richard Markowitz: The Mind of Stefan Miklos; Live Bait; The Bunker (Part 1); The Bunker (Part 2)
Music Editor: Dan Carlin
Producer
- William Read Woodfield: The Heir Apparent; The Contender (Part One); The Contender (Part Two); The Mercenaries; The Execution; The Cardinal; The Diplomat
- Allan Balter: The Heir Apparent; The Contender (Part One); The Contender (Part Two); The Mercenaries; The Execution; The Cardinal; The Diplomat
- Robert E. Thompson: The Elixir; The Play
- Stanley Kallis: The Bargain; The Freeze; The Exchange; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; Live Bait; The Bunker (Part 1); The Bunker (Part 2); Nitro; Nicole; The Vault; Illusion; The Interrogator
Production Coordinator
- Alan Godfrey: The Cardinal; The Elixir; The Diplomat; The Play; The Bargain; The Freeze; The Exchange; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; Live Bait; The Bunker (Part 1); The Bunker (Part 2); Nitro; Nicole; The Vault; Illusion; The Interrogator
Production Manager: Edward Haldeman
Production Mixer: Dominick Gaffey
Property Master
- William M. Bates: The Bargain; The Freeze; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; Live Bait; The Bunker (Part 1); The Bunker (Part 2)
Re-recording Mixer: Gordon L. Day
Script Consultant
- Robert E. Thompson: The Heir Apparent; The Contender (Part One); The Contender (Part Two); The Mercenaries; The Execution; The Cardinal; The Elixir; The Diplomat; The Play; The Bargain; The Exchange
- Paul Playdon: The Freeze; The Mind of Stefan Miklos; The Test Case; The System; The Glass Cage; Doomsday; Live Bait; The Bunker (Part 1); The Bunker (Part 2); Nitro; Nicole; The Vault; Illusion; The Interrogator
Script Supervisor: Allan Greedy
Set Decorator: Lucien Hafley
Special Effects: Jonnie Burke
Supervising Costumer: Forrest T. Butler
Supervising Property Master
- Arthur Wasson: The Heir Apparent; The Contender (Part One); The Contender (Part Two); The Mercenaries; The Execution; The Cardinal; The Elixir; The Diplomat; The Play; The Exchange; Nitro; Nicole; The Vault; Illusion; The Interrogator
Supervising Sound Editor: Joseph G. Sorokin
Vehicles: Ed Chamey
Created by Bruce Geller
Executive Producer: Bruce Geller
Associate Producer: Barry Crane
Executive in Charge of Production: Douglas S. Cramer
In Charge of Post Production: Paul Krasny
Theme Music by Lalo Schifrin
Recorded by Glen Glenn Sound
Men’s Clothing Furnished by Worsted-Tex
Episodes Copyright: 1968 (1-12); 1969 (13-25)
TV Ratings (USA): 23.3 (No. 11)