Hawaii Five-O is an American police procedural drama series produced by CBS Productions and created by Leonard Freeman. Set in Hawaii, the show originally aired for 12 seasons from 1968 to 1980, and continues in reruns. At the airing of its last episode, it was the longest-running police drama in American television history and the last fictional primetime show that debuted in the 1960s to leave the air.
The show starred Jack Lord as Detective Captain Stephen "Steve" McGarrett, the head of a special state police task force in Hawaii which was based on an actual unit that existed under martial law after World War II. The theme music composed by Morton Stevens became especially popular. Many episodes would end with McGarrett's catchphrase, "Book 'em, Danno!"