Eva Mozes Kor was a Jewish girl, born in Romania to Alexander and Jaffa Mozes, the only Jewish residents in the area. She had three siblings, one of whom was her twin sister Miriam. Her parents and two older sisters were gassed in Auschwitz; she survived because, along with her twin sister, she was the subject of medical experiments that Josef Mengele was performing on twins there. After the camp was liberated by the Red Army in 1945, Eva went to live in Poland, Romania and eventually the U.S. She died on July 4, 2019 at the age of 85 in Krakow, Poland accompanying a group on an educational tour of Auschwitz.