This tale begins with two boys, one taken in by the other boy’s family, during the Nazi occupation of Poland.  Ben Solomon, years later in Chicago, accuses Elliot Rosenzweig of being Otto Piatek, a notorious Nazi SS officer.  The book does a fair job of keeping one guessing the truth.  There is a touching romance thrown in, and some “zoning out” which help the investigation along with some clues from beyond.  Not a bad quick read.