One of television's most popular police dramas, Hawaii Five-O, finally came to an end with its twelfth season, which ran from October 4, 1979 through April 5, 1980. By this point, ratings had started to fall; to buoy them, producers replaced several of the series mainstays with a new supporting cast including James Carew (William Smith), Truck Kealoha (Moe Keale) and Lori Wilson (Sharon Farrell) . Narratively, Season 12 is perhaps best-known as the one that brought about the final showdown between Detective Steve McGarrett and seemingly invincible Hawaiian mafia boss Wo Fat (Khigh Dhiegh). The 19 episodes in that season all appear in this set; they include such installments as Voice of Terror, Image of Fear and Sign of the Ram.