"Albert Speer: His Battle with Truth" (1995) is a biographical work on Albert Speer, German minister of Armaments during World War II. In it, Sereny explores how much Speer knew about the Holocaust. During the Nuremberg trials, Speer had avoided a death sentence, claiming all the while that he knew nothing of the Holocaust. However, Sereny concludes that Speer must have known based on a letter he wrote to the Jewish community in South Africa (after the war), and the fact that his closest assistant attended the Wannsee Conference (where the details of the genocide of the Jews were worked out) and could not have failed to inform him about the proceedings.