Jews in Nazi-occupied Warsaw during the 1940s were under increasing threat as they were stripped of their rights and forced to live in a guarded ghetto away from the non-Jewish Polish population. Within the ghettos, a small but distinct group existed: the assimilated, acculturated, and baptized Jews. Unwilling to integrate into the Jewish community and unable to merge with the Polish one, they formed a group of their own, remaining in a state of...