Volunteer. The True Story of the Resistance Hero who Infiltrated Auschwitz - Costa Book of the Year 2019, Paperback/Jack Fairweather

Underground operative Witold Polecki accepted a mission in 1940 to gather intelligence on the then-unknown situation at Auschwitz, volunteering himself into the camp to gather information that shaped the first Allied action on the Holocaust. A major account of a bold and important figure.