Gestapo interpreter who emptied a ghetto
Daniel Stein, a Polish Jew passing as a Pole, worked as an interpreter for the German police in occupied Belarus and used that access to warn the Emsk ghetto of an imminent liquidation and to help arrange a breakout that let a few hundred Jews escape. He was later exposed, confessed to the police chief who trusted him, and was let go. He hid in a convent, converted to Catholicism, and after the war became a Carmelite priest in Haifa. The character is based on the real Oswald Rufeisen, Brother Daniel, who helped the Mir ghetto escape in 1942.