The world was told that the last Tsar of Russia and his family were butchered in the 'cellar massacre' at Ekaterinburg in 1918. Yet diplomats and reporters did not believe it. And the longest court case of the century failed to explode Anna Anderson's claim to be the Tsar's youngest daughter, Grand Duchess Anastasia. Anthony Summers and Tom Mangold spent five years tracking down witnesses and long-lost documents. The search led to Moscow, Tokyo and Washington and their persistence finally paid off when they found a suppressed official dossier - the File on the Tsar. It shows that the public was fed a lie. The Romanovs did not all die at Ekaterinburg, but became pawns in an international power game, involving Lenin, the Kaiser, the British Royal Family and British Intelligence. And in London, over 80 years later, the cover-up goes on.