A Kahuna places a curse on Rick and the King Kamehameha Club.
Rick is organising a surf-ski competition to be held at the King Kamehameha Club (much to the disapproval of co-committee member Higgins) when a Kahuna appears a places a "curse" on the club and all who use it. Magnum and others are sceptical, but the native locals take such curses very seriously, and it seems there may be something in it when one of the competition competitors suddenly collapses and dies; then, amongst other incidents, fire breaks out in the kitchen; and when Rick falls ill. Magnum investigates to try and find if there is a more logical explanation behind the events, but his enquiries aren't helped by a hounding news reporter, who sees the series of strange incidents as a chance for a big news story.
- Tom Selleck as Thomas Sullivan Magnum IV
- John Hillerman as Jonathan Quayle Higgins III
- Roger E. Mosley as Theodore "T.C." Calvin
- Larry Manetti as Rick Wright