In 1946 in North America, a child makes a grisly find in a deserted field -- a discovery that opens a shuttered window on a secret dating back to the beginning of the turbulent decade. In 1941 in occupied France, Adele Georges's fruitless attempts to learn the whereabouts of her father, captured by the Nazis, lead her to a lonely young German soldier far from home. A spark between them becomes a fire -- and a dangerous love affair blooms across enemy lines, dooming Adele to a grim postwar existence as a despised outcast, one of the infamous "horizontal collaborators." Ostracized, tortured, tormented, she chooses a desperate escape, accompanying a war-damaged yet optimistic Allied soldier across an ocean to a new land. But there is no refuge from the past, as Adele's broken heart and shameful secret drive her deeper into despair ... and toward a shocking outcome.