I stayed up all night reading this. The focus of the book is three perspectives. WWII and its aftermath. A former medic served in Germany and fell in love with a member of the resistance. Her sister was a scientist and pilot. Some of the characters were loyal to Hitler. After the war the medic was unable to find is pregnant lover. Years later his daughter discovers photos that reveal him with a pregnant woman. Coincidentally, a local woman from Germany was searching for her sister. All these tales ultimately intersect.