Raoul Wallenberg - a Swedish diplomat in Budapest in 1944-saved tens of thousands of Jews from being sent to death in the Nazi concentration camp Auschwitz. Russian forces occupied Budapest in 1945 and Wallenberg disappeared. For a long time people thought he was dead, but it is now known that he was arrested by the Russians. John Bierman reports in this investigative film the amazing story of this modern Pimpernel's rescue exploits and the mystery of his disappearance. Today, inescapable evidence shows that he could still be alive somewhere in the Gulag. If he is, he's been there ' forgotten ' for 35 years.