Jona was nine years old when Nazi Germany invaded Poland in September 1939 . Jona and her family , residents of Łódź , were incarcerated in the Łódź ghetto , from which her parents were deported to the Chelmno extermination camp in 1942 . In August 1944 she and her two sisters , including her twin , Miriam , were deported to the Auschwitz concentration camp . Mengele , not recognizing she was a twin , sent the 14-year-old Jona in the direction of the gas chambers . However , when her older sister apprised Mengele of that fact , Jona and Miriam were sent to Mengele 's " laboratory " for twins research . Jona was tattooed with the number A27700 and Miriam received the number A27725 . With the evacuation of Auschwitz on January 27 , 1945 , Jona and Miriam were sent on a death march to the Ravensbrück concentration camp ; they were later incarcerated in nearby Malchow . They were liberated near Leipzig on May 8 , 1945 . Jona and Miriam returned to Łódź , but following the 1946 Kielce pogrom they were taken to London and cared for by Jewish families . In 1948 Jona immigrated alone to Palestine . She eventually resided in Tel Aviv with her husband
Kielce pogrom
Kielce pogrom
Jona Laks