S1, E5: In 1941 the Germans looted one of the Soviet Union’s most important art works, called the Amber Room. An extraordinary series of C18 amber screens worth millions of pounds and considered, by many, the 8th wonder of the world. It was taken to the Baltic city of Konigsberg. 4 years later at the end of the war, it had vanished. So began one of the greatest treasure hunts of the twentieth century.