It has no connection with the better-known book and film of the same name, and ran for only one season of 17 episodes between September 7, 1966, and January 4, 1967.

[3] Lansing initially plays the dual role of Peter Murphy, an American spy, and Mark Wainwright, an influential playboy millionaire who is his exact double.

One evening, as the spy is being chased through the streets, he sees Wainwright drunkenly stumbling out of a bar.

Stunned at the physical resemblance, Murphy unwittingly allows enemy agents to kill Wainwright, after which he assumes his identity.

In the final episode, "I Take This Woman", which aired on January 4, 1967, Murphy decides to quit being a secret agent.