
Detective Steve McGarrett (Jack Lord) heads up Hawaii Five-O, a special division of the state police tasked with bringing down organized crime on the islands. The Five-O team works with local police from time to time on individual cases, and McGarrett's nemesis is crime kingpin Wo Fat. The show, which ran for 12 seasons during its original run, is famous for its catchphrase "Book 'em, Danno," said by McGarrett at the end of most episodes. The show's theme song, composed by Morton Stevens, became popular during the show's original run.

The missing student (Sian Barbara Allen) of a foreign expatriate may hold the vital clue to solving her instructor's watery murder.

Employees of a family-owned business are threatened and the company's matriarch vanishes; guests Farley Granger, Jeanette Nolan.

McGarrett gets involved when an influential father objects to his 16-year-old daughter's romance with a poor boy.

A policeman wants to avenge the murder of his son, a prizefighter paid to fix a bout; guest Jesse White.