2007, Paperback
Author: Tatiana de Rosnay 
Very good condition
Paris, July 1942: Sarah, a ten-year-old girl, is taken with her parents by the French police as they go door-to-door arresting Jewish families in the middle of the night. Desperate to protect her younger brother, Sarah locks him in a bedroom cupboard—their secret hiding place—-and promises to come back for him as soon as they are released. 
Sixty years later: Sarah’s story intertwines with that of Julia Jarmond, an American journalist investigating the roundup. In her research, Julia stumbles onto a trail of secrets that link her to Sarah, and to questions about her own romantic future.