When the German army surrounded Leningrad in 1941, it was the beginning of a terrible 900 days of isolation for its citizens. On a meagre bread ration and with temperatures of minus 40 degrees celsius frozen corpses littered the streets. There was no light or water. It is now estimated that at least 1,200,000 people died. This remarkable German film uses previously untransmitted footage of the siege which shows the Russian suffering inflicted by the Nazis.