"Mannix" is an American detective television series that ran for 8 seasons from 1967 to 1975 on CBS. The title character, Joe Mannix, is a private investigator played by actor Mike Connors (August 15, 1925 – January 26, 2017).

During the first season of the series, Joe Mannix works for a large Los Angeles detective agency called Intertect, which was the planned original title of the show. Intertect uses computers to help solve crimes.

As opposed to the other employees, Mannix belonged to the classic American detective archetype, thus he usually ignores the computers' solutions, disobeys his boss's orders, and sets out to do things his own way. He wears plaid sport coats and has his own office that he keeps sloppy between his assignments. His boss has cameras in all the rooms of the Intertect offices monitoring the performance of his employees and providing instant feedback through intercoms in the room. Unlike the other Intertect operatives, Mannix attempts to block the camera with a coat rack and questions the boss, comparing him to Big Brother.

To improve the ratings of the show in the second season, Desilu head Lucille Ball and show producer Bruce Geller made some changes. Ball thought the computers were too high-tech and beyond the comprehension of the average viewer of the time, and had them removed.

In the first episode of season two, to explain the changes, Mannix explains that he had quit Intertect.

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