Jan Karski's Story of a Secret State stands as one of the most poignant and inspiring memoirs of World War II and the Holocaust. With elements of a spy thriller, documenting his experiences in the Polish Underground, and as one of the first accounts of the systematic slaughter of the Jews by the German Nazis, this volume is a remarkable testimony of one man's courage and a nation's struggle for resistance against overwhelming oppression.

Karski was a brilliant young diplomat when war broke out in 1939 with Hitler's invasion of Poland. Taken prisoner by the Soviet Red Army,...