Murder, She Wrote: The Celtic Riddle

Jessica Fletcher searches for a woman who witnessed the murder of a man trying to expose a serious flaw in a top-secret government satellite code.

Jessica Fletcher, lecturing at a writers' conference, finds herself called on to solve the killing of a guest speaker, an arrogant Russian author who'd written a nonfiction, tell-all book about his tenure as head of the KGB.

Jessica Fletcher discovers a shocking old family secret that leads her on a journey to the deep South to bring to light the mysterious details surrounding the death of a slave owned by one of her long dead ancestors in the mid-1800s.