PREVENTING THE THIRD WORLD WAR: 1984 opens amid the greatest fears of international tension and nuclear holocaust since the Cold War. Lord Bullock, biographer of British Foreign Secretary Ernest Bevin, talks about the foundation of NATO and how the West learnt to deal with the Soviet Union after the War. THE KITCHENER ENIGMA: In 1916 Lord Kitchener was drowned on his way to Russia. Now underwater pictures reveal clues as to how his ship, HMS Hampshire, was sunk. Will they lay to rest the rumour that still remains about the secrets surrounding the Imperial War Lord? THE LAST BATTLE IN ENGLAND: In 1745 the Stuarts had their last chance of being restored to the English throne. Bonnie Prince Charlie reached Derby but then retreated. If he had marched on towards London, could he have seized the crown?