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 The Murder on the Links, but under her stage name of "Cinderella". Dulcie is his love interest in the novel, and later becomes his wife. The married couple leaves England and settles in Argentina, from which Hastings will occasionally return in the novels Peril at End House and The A.B.C. Murders. Dulcie and Hastings had two? sons and a daughter called Judith, who married a doctor. Dulcie died before Curtain, in which she was referred to as "Cinders".

Community content is available under CC-BY-SA unless otherwise noted.