"To find his way back home to his family in Germany during WWII, Max Bretzfeld, with a kobold named Berg on one shoulder and a dybbuk named Stein on the other, sets out to do the impossible--become a British spy"--

Lost in the Black Forest, Otto meets three mysterious sisters and finds himself entwined in a prophecy, a promise, and a harmonica--and decades later three children, Friedrich in Germany, Mike in Pennsylvania, and Ivy in California find themselves caughtup in the same thread of destiny in the darkest days of the twentieth century, struggling to keep their families intact, and tied together by the music of the same harmonica.