The Au PairSeraphine Mayes and her twin brother, Danny, were born in the middle of summer at their family's estate on the Norfolk coast. Within hours of their birth, their mother threw herself from the cliffs, the au pair fled, and the village thrilled with whispers of dark cloaks, changelings, and the aloof couple who drew a young nanny into their inner circle. Now an adult, Seraphine mourns the recent death of her father. While going through his belongings,