When pretty, young newlywed Gwenda Reed travels from New Zealand to England ahead of her new husband, she encounters a series of strange deja vu's. First there's the Victorian coastal house that feels disturbingly familiar. Then a line of dialogue heard at a London play triggers a terrifying vision of a dead woman's body with the killer poised over her, sending Gwenda running in terror into the streets. Fortunately, Miss Marple is also at the theater and, curious, she pursues Gwenda. What follows is one of the intrepid investigator's most engaging cases as she ignores her own advice to Gwenda to let sleeping murder lie.