Magnum's security services for an antique auction are tested by San Diego-based P.I.'s A.J and Rick Simon's task to steal back a Ki'i - which seems to carry a death curse - for its previous owner who feels his declining health will improve if it's returned to its origin.Episode was a cross-over with Simon & Simon; the second half of the story, Emeralds Are Not a Girl's Best Friend, aired as a Simon & Simon episode immediately following Ki'i's Don't Lie.