Magnum, P.I. wraps up its eight-year run with a two-part final episode (originally telecast in a single two-hour timeslot). In Part One, Magnum returns to his home town for a family reunion, where his paternal grandfather (Howard Duff) offers to reinstate him as a Naval officer. But before Magnum can say "yes" or "no", he is summoned back to Hawaii by former girlfriend Linda Lee Ellison (Patrice Martinez), who insists that someone is stalking her. Upon his return, Magnum receives some startling information about his daughter Lily, whom he had presumed to be dead. Meanwhile, Rick (Larry Manetti) nervously prepares to marry the estimable Cleo Mitchell (Phyllis Davis).
by Hal Erickson synopsis