Hawaii Five-O: Created by Leonard Freeman. With Jack Lord, James MacArthur, Kam Fong, Herman Wedemeyer. Follows the investigations of Hawaii Five-0; an elite branch of the Hawaii State Police, and answerable only to the governor, and headed by the stalwart, Steve McGarrett.

Five-O investigates multiple cases of missing women tourists. The victims were all recently widowed. It turns out that they are being seduced, swindled and then murdered.

A state investigation centers on Mike Finney, a former racketeer who hasn't violated the law since moving to Hawaii nine years earlier. But Charles Irwin, an ambitious counsel for a state legislative committee, sees the probe as a way to further his political ambitions. For Five-O, the case begins when there is an apparent attempt on Irwin's life.

Five-O seeks to bust a family-run protection racket. But the investigation turns personal for Five-O stalwart Chin Ho Kelly because his daughter is in love with the son of the racket's patriarch. The probe intensifies after a policeman and the best friend of Chin Ho's daughter are killed.

When a Soviet tennis team visits Hawaii, a young female star decides to defect in order to be with her American boyfriend. What she doesn't know is that just before she made a break for it, one of her teammates brained a KGB man with a wrench over a diamond-smuggling operation, and now both she and her boyfriend are patsies in the murder and ...

Hawaii Five-O (TV Series 1968–1980) cast and crew credits, including actors, actresses, directors, writers and more.

Author Millicent Shand, a friend of Gov. Jameson, is in Hawaii to promote her new novel based on her adventures. She approaches McGarrett and the governor again, this time about her niece, Carole, whose husband disappeared while scuba diving off Honolulu.

The mobster, known as "Big Uncle," was looking to move into Hawaii. One of four Hawaiian mobsters is responsible. McGarrett must figure out which one before a gangland war erupts.

Five-O enters the case when the body of a federal law-enforcement agent -- killed during a robbery on the Mainland -- is discovered in a refrigerator shipped to Hawaii. McGarrett & Co. turn up the heat as the body count increases.

Jonathan Kaye enlists Five-O's help to track down the plates and a Navy intelligence officer, and a friend of McGarrett's, also is part of the probe. However, the Navy man is secretly working with Nicole Fleming, one of the criminals after the plates.