In 1945, as the Red Army arrived at the edge of Warsaw, it was confronted by a sea of destruction, rubble, ash and misery. Arriving as "liberators", the shadow of the Soviet Union would soon loom large over a population brutalised by five long years of Nazi occupation - a population that had lost and given so much in the fight for its freedom, but would be prepared to give even more.

In the final episode of Poland at War, Alexandra Richie tells the story of how Poland's liberators became their jailors, of how one violent dictatorship was replaced with another, and how men and women like Władysław Bartoszewski, fought to resist the unimaginable might of the Soviet occupation.