In 1942, the Nazis come for a Jewish family living in Montparnasse, occupied Paris. In the chaos of their arrest, eleven-year-old Josie flees to the only person she trusts: her piano teacher, Andree Levallois, secretly an operative in the French Resistance. Andree takes her in as a member of the family, spreading their rations and risking everything to keep her safe. But soon the authorities close in, and both Andree and Josie are caught in a desperate race to stay alive. Heather Morris, author of the international bestseller, The Tattooist of Auschwitz, returns with a masterful new novel that captures the astonishing bravery of French Resistance operatives, and one piano teacher who is willing to risk everything to save a young girl.