The Katyn massacre, carried out by the Soviet NKVD in 1940, was only one of many unspeakable crimes committed by Stalin's ruthless executioners over three decades. The mass murder of thousands of Polish officers was part of a relentless purge, the secrets and details of which have only recently been partially revealed.
How could Hitler and Stalin, sworn ideological enemies, come to a secret pact in 1939? The captivating and detailed story of the diplomatic fiasco that led to the signing of the Nazi-Soviet pact and its devastating consequences.