Magnum, P.I. - Season 5 Episode 1

Thomas is hired by Diane Dupres, who was kidnapped as a child with her twin sister, and who now believes that someone is trying to kill her. Although Rick and T.C. think that the woman spells trouble, Thomas begins to fall in love as he spends time with Diane investigating who might want to harm her. Higgins's old flame, the recently widowed Lady Ashley, travels to Hawaii so that they can be married, but Higgins quickly becomes disheartened by his former love's snobbery. Complicating matters, Higgins botches the announcement of his forthcoming nuptials to Agatha, leading her to believe that Higgins has proposed to her.