A. E. Giagheddu Knihy

1961: On a summer's day, while her family picnics by the stream on, 16-year-old Laurel hides out in her tree house dreaming of a boy called Billy, a move to London, and the bright future she can't wait to seize. But before the idyllic afternoon is over, Laurel will have witnessed a shocking crime that changes everything.

Edie Burchill and her mother have never been close, but when a long lost letter arrives with the return address of Milderhurst Castle, Kent, printed on its envelope, Edie begins to suspect that her mother's emotional distance masks an old secret.