Dulcie Hastings (nee Duveen) is a stage performer and Bella's sister, who works as part of her stage act called the 'Dulcibella Sisters'. She and Arthur Hastings met on a train in Murder on the Links, but under her stage name of "Cinderella", and is his love interest in the novel, and later became his wife.They had two? sons and a daughter called Judith, who married a doctor. Dulcie died before Curtain, in which she was called "Cinders".

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