A captivating novel based on the story of the extraordinary real-life American woman who secretly worked for the French Resistance during World War II—while playing hostess to the invading Germans at the iconic Hôtel Ritz in Paris—from the New York Times bestselling author of The Aviator's Wife and The Swans of Fifth Avenue.“A compelling portrait of a marriage and a nation at war from within.”—Kate Quinn, author of The Alice Network Nothing bad can happen at the Ritz; inside