Magnum, P.I. (1980): Season 2, Episode 2

2 - 2: Dead Man's Channel

After her archaeologist father's boat is found deserted at sea in the Nihoa Channel, a marine biology student hires Magnum to find out what happened to him. The local natives warn Magnum to stay away from the "cursed" channel, but he's determined to find out what happened to the missing man.