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n 1983 Scotland, half-sisters Colleen and Mairi Gordon are extremely close friends. However, their father’s physical and mental abuse of Mairi’s biological mother leads to a divorce. Colleen remains with Gordon while Mairi goes to France with her mother. Mairi desperately misses her best friend, but her mother wipes out all references to Scotland and renames her daughter Marielle Girard.
Over ten years have passed before Marielle learns that colleen never stopped trying to find her. Deciding to see her best friend for the first time in a decade, Marielle returns to Scotland, only to learn that Colleen has been dead for two years. The locals hint that Colleen’s spouse killed her. As Marielle tries to learn what happened to her half-sister, she becomes romantically involved with Colleen’s husband and a man from her own Scottish past.