On September 20, 1940, one of the most famous European art dealers disembarked in New York, one of hundreds of Jewish refugees fleeing Vichy France. Leaving behind his beloved Paris gallery, Paul Rosenberg had managed to save his family, but his paintings - modern masterpieces by Cezanne, Monet, Sisley and others - were not so fortunate. As he fled, dozens of works were seized by Nazi forces and the art dealer's own legacy eradicated. More than a half century later, Anne Sinclair uncovered a box filled with letters. 'Curious in spite of myself,' she writes, 'I plunged into these archives, in search of the story of my family. To find out who my mother's father really was...a man hailed as a pioneer in the world of modern art, who then became a pariah in his own country during the Second World War. I was overcome with a desire to fit together the pieces of this French story of art and war.' Drawing on her grandfather's intimate correspondences with Picasso, Matisse, Braque and others, Sinclair takes us on a personal journey through the life of a legendary member of the Parisian art scene.