"Paris, July 1942: Ten-year-old Sarah is brutally arrested with her family in the Vel' d'Hiv' roundup, the most notorious act of French collaboration with the Nazis. But before the police come to take them, Sarah locks her younger brother, Michel, in their favorite hiding place, a cupboard in the family's apartment. She keeps the key, thinking that she will be back within a few hours." "Paris, May 2002: On Vel'd'Hiv's sixtieth anniversary, Julia Jarmond,...