Two months after his eleventh birthday, on 9 July 1944, the gates of Bergen-Belsen concentration camp closed behind Ladislaus Löb. Five months later, with the Second World War still raging, he crossed the border into Switzerland, cold and hungry, but alive and safe. He was not alone, but part of a group of some 1,670 Jewish men, women and children from Hungary, who had been rescued from the Nazis as a result of a deal made by a man called Rezso Kasztner - himself a Hungarian Jew - with Adolf Eichmann, the chief architect of the Holocaust. Twelve years and a miscarriage of justice later Kasztner was murdered by an extremist Jewish gang in his adopted home of Israel.

To this day he remains a highly controversial figure, regarded by some as a traitor and by many others as a hero. He was accused of betraying the bulk of the Hungarian Jewry by hand-picking only those who were politically and personally dear to him, or those from whom he could benefit financially, and the judge of his post-war trial concluded that he had 'sold his soul to Satan'.

Rezso Kasztner tells his story - and also the story of a child who lived to grow up after the Holocaust thanks to him. A compelling combination of history and memoir, it is also an examination of one individual's unique achievement and a consideration of the profound moral issues raised by his dealings with some of the most evil men ever known.