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 he...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.