What really happened that afternoon in November 1938, when the young Polish Jew walked into the German embassy in Paris and shots rang out? The immediate consequence was concrete: Nazi Germany retaliated with the "Night of Broken Glass," recognized as the beginning of the Holocaust. Lost and overlooked in the aftermath is the arresting story of Herschel Grynszpan, the confused teenager whose murder of Ernst vom Rath was used to justify Kristallnacht...