This is the definitive screen history of the evolution of Auschwitz, how it fitted into the Nazis' plan for the conquest of the East and how scarcely a country in Europe was untouched by its existence. Recognising the horror is not enough. This series reveals how and why the Nazis did what they did - knowledge that is crucial if we are to ensure such appalling events never happen again. Through rare archive footage, dramatic reconstructions of key decision-making moments and the first major CGI reconstruction, the reality of life in the camp is exposed in unflinching detail. Ground-breaking interviews with witnesses, political prisoners and former SS members shed light on the mentality of the perpetrators and lay bare the harsh moral choices of all those involved.