1-hour prime-time dramatic series aired on NBC from 1965 to 1968.

Regular Cast

- Robert Culp (Kelly Robinson)
- Bill Cosby (Alexander Scott)

Recurring Cast

- Antoinette Bower (Shelby Clavell)
- Sheldon Leonard (Sorgi)
- France Nuyen (Sam-than McLean)
- Alan Oppenheimer (Colonel Benkovsky)
- Harold Stone (Zarkas)
- Kenneth Tobey (Russ Conway)

Producers

- Morton Fine
- David Friedkin
- Sheldon Leonard

Original music

- Hugo Friedhofer
- Earle H. Hagen (including theme)

Cinematography

- Fleet Southcott

Film Editing

- Bud Molin
- Basil Wrangell

Assistant Directors

- Leon Chooluck
- Phil Cook
- Clark Paylow

Sound Department

- Burdick S. Trask

Stunts

- Jesse Wayne

Other crew

- Ronald Jacobs (Production Executive)
- Herbert Klynn (Title Designer)

Production Companies

- 3F Productions
- Paramount Television

Distributors

- NBC Film
- National Broadcasting Company (NBC)
- National Telefilm Associates Inc. (NTA)
- Peter Rodgers Organization

Awards and Nominations

American Cinema Editors (Eddie Awards)

Nominated: Henry D. Molin, Best Edited Television Program, 1966 (for episode "The Loser")

Nominated: Bud Molin, Best Edited Television Program 1967 (for episode "Court of the Lion)

Academy of Television Arts & Sciences (Emmy Awards)

Won: Eartha Kitt, Outstanding Single Performance by an Actress in a Leading Role in a Drama, 1966 (for the episode "The Loser"

Won: Bill Cosby, Outstanding Continued Performance by an Actor in a Leading Role in a Dramatic Series, 1966

Won: Bill Cosby, Outstanding Continued Performance by an Actor in a Leading Role in a Dramatic Series, 1967

Won: Bill Cosby, Outstanding Continued Performance by an Actor in a Leading Role in a Dramatic Series, 1968

Nominated: Robert Culp, Outstanding Continued Performance by an Actor in a Leading Role in a Dramatic Series, 1966

Nominated: Robert Culp, Outstanding Continued Performance by an Actor in a Leading Role in a Dramatic Series, 1967

Nominated: Robert Culp, Outstanding Continued Performance by an Actor in a Leading Role in a Dramatic Series, 1968

Nominated: Morton Fine and David Friedkin, producers, Outstanding Dramatic Series, 1966

Nominated: Morton Fine and David Friedkin, producers, Outstanding Dramatic Series, 1967

Nominated: Morton Fine and David Friedkin, producers, Outstanding Dramatic Series, 1968

Golden Globes

Nominated: I Spy, Best TV Show 1966

Nominated: Robert Culp, Best Male TV Star, 1967

Nominated: Bill Cosby, Best Male TV Star, 1967

Won: I Spy, Best TV Show, 1967