Hidden behind a screen of euphemisms and evasions, of political expediency and psychological denial, the most terrible crime in human history was committed. Despite the shock and outrage that swept the world when the Nazi death camps were first liberated in 1945, the truth about the extermination of European Jewry had been an open secret since at least 1941. Using sources and documents only recently made available, Walter Lacquer examines when and how information about the genocide became known to millions of Germans, international Jewish organizations, leaders of Jewish communities throughout Europe, and top government officials in neutral and Allied countries. Laying bare the lethal combination of disbelief and indifference that met this news, "The Terrible Secret" offers a brilliant and chilling demonstration of paralysis in the face of ultimate evil.