France, 1942. Raised by her indomitable, free-spirited American grandmother in the glamorous Hotel Ritz, Marguerite “Daisy” Villon remains in Paris with her daughter and husband, a Nazi collaborator, after France falls to Hitler. At first reluctant to put herself and her family at risk to assist her grandmother’s Resistance efforts, Daisy agrees to act as a courier for a skilled English forger known only as Legrand, who creates identity papers for Resistance members and Jewish refugees. But as Daisy is drawn ever deeper into Legrand’s underground network, committing increasingly audacious acts of resistance for the sake of the country—and the man—she holds dear, she uncovers a devastating secret . . . one that will force her to commit the ultimate betrayal, and to confront at last the shocking circumstances of her own family history.