Magnum, P.I. (1980-1988)
Former Naval Intelligence officer Thomas Magnum resigns his commission to become a private investigator on the north shore of Oahu, Hawaii. He lands a home in the guest house on the estate of millionaire author Robin Masters in exchange for testing the estate's security, but is forced to work under the strict and ever watchful eye of Jonathan Higgins, a former British Army soldier who serves as the estate manager, and constantly patrols the grounds with his two "lads" Zeus and Apollo, who are loyally trained Doberman Pinschers always ready to pounce on Magnum. Two of Magnum's former Vietnam comrades and friends live and work nearby. T.C. Calvin owns "Island Hoppers", a helicopter tour company, and Rick Wright manages the King Kamehameha Club, an exclusive beach front club. T.C.'s piloting skills and Rick's shady underworld contacts often get them roped into Magnum's cases. Others in Magnum's circle include Naval officers Mac MacReynolds, Maggie Pool, and Buck Greene; Hawaii P.D. officers Nolan Page and Yoshi Tanaka; Dr. Ibold; Higgins's fellow Brit Agatha Chumley; Rick's underworld contact "Ice Pick"; and Deputy D.A. Carol Baldwin. Robin Masters was never fully seen, ultimately leading Magnum to the conclusion that Higgins was actually Masters, though this theory was never fully proven.
Stars: Tom Selleck (Thomas Magnum), John Hillerman (Jonathan Quayle Higgins), Roger E. Mosley (T.C. Calvin), Larry Manetti (Rick Wright), Elisha Cook Jr. (Francis 'Ice Pick' Hofstetler), Kathleen Lloyd (Carol Baldwin)
7x14. Murder by Night 1/14/1987
Magnum and company step out of character and into an old plot line out of a 40's who-dun-it.
1940s San Francisco: Private Investigator Thomas S. Magnum investigates the murder of newspaper tycoon William Maxfield. The case involves characters that strangely bear a strong resemblance to the (modern day) Magnum, T.C., Higgins and Rick.
I, personally, missed the decade in which Magnum was showing in the States, but I have managed to find a few episodes - For some strange reason, there's a lot out there dubbed in German, Italian, and French, but not so much with the original English soundtrack. Anyway, as usual, leave a comment if you'd like me to find more. :)