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Official Site: CBS

Magnum, P.I. is an American television series starring Tom Selleck as Thomas Magnum, a private investigator living on Oahu, Hawaii. The series ran from 1980 to 1988 in first-run broadcast on the American CBS television network.

According to the Nielsen ratings, Magnum, P.I. consistently ranked in the top twenty U.S. television programs during the first five years that the series was originally telecast in the United States. Originally appearing in a prime time American network timeslot of 8 p.m. Eastern on Thursdays, Magnum, P.I. was one of the highest-rated shows on U.S. television.

Thomas Sullivan Magnum lives and resides in the guest house of a posh, beachfront estate, known as Robin's Nest, in Hawaii, at the invitation of its owner, Robin Masters, the celebrated-but-never-seen author of several dozen lurid novels. Ostensibly this is quid pro quo for Magnum's services based upon Magnum's claimed expertise in security; the pilot suggests Magnum also did Masters a favor of some kind.

In addition, Robin’s Nest is guarded by two highly trained Doberman Pinscher, Zeus and Apollo, and all other aspects of the estate are managed by Englishman Jonathan Quayle Higgins III (played by Texas-born veteran actor John Hillerman), an ex-British Army Sergeant Major with whom, often as a humorous aside during various episodes of the series, Magnum must barter for use of estate amenities other than the guest house and the Ferrari 308 GTS (e.g., tennis courts, wine cellar, expensive cameras, etc.). During early seasons of Magnum, P.I., the voice of Robin Masters, heard only a few times per season, was voiced by Orson Welles.

Thomas Magnum has not been a contender in any CBUB matches.