As a young girl growing up in Hamburg, Germany, Legrand could look from her bedroom window onto the bare expanse of the Bornplatz , the site of what was once the city’s largest synagogue. The great Jewish house of worship was torched on Kristallnacht by antisemitic mobs; a few months later the Nazis ordered the Jewish community to demolish what remained of the building and turn over the land to the city. The deportation of Hamburg’s Jews to the death camps began in 1941. In the summer of 1942, the Jewish family that owned what would later become Legrand’s childhood...