Magnum finds himself working with anachronistic gumshoe Luther Gillis again after someone kidnaps Higgins and Luther's secretary.

A former British secret agent and old friend of Higgins arrives in Honolulu imagining himself as Sherlock Holmes.

The King of Kamehameha Club is robbed by masked gunmen and the three principal eye witnesses - Higgins, T.C. and Rick - have decidedly different views of what happened.

A distinguished Frenchman contacts Magnum and asks for his help in supposedly finding a missing heir.

Magnum tastes death when he is set up by a hit man.

Higgins must cope with a visiting dignitary, an invitational chess tournament and the appearance of his flamboyant half brother.