Former governess Emma Betony is interrupted in her attempt to join a retirement community for gentlewomen by a letter from one of her former charges, Grace Aram. Miss Betony used to regale Grace with exotic tales of her aunt, Mary Shagreen, which provided a bright spot in her childhood. Grace now runs a small school which has been evacuated to a former nursing home in the countryside - though two of the patients still live on the site. Grace begs Miss Betony for help;…