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At the behest of Robin Masters, Magnum (Tom Selleck) is forced to allow pesky novelist Betty Windom (Cassie Yates) to accompany him on an insurance-fraud investigation. As the story progresses, Betty decides that the case at hand is excellent grist for her creative mill, and thus she formulates the plotline of a novel based on the investigation, in which Magnum is reborn as the dashing "Sebastian Steele" and she herself is the lucious "Colette". Alas, in her innocent zeal to transform fact into fiction, Betty has placed herself and Magnum in a potentially deadly situation! The episode's final moment is a glorious takeoff of the "beach scene" in From Here to Eternity.