<b>''Addictive and deeply moving'' </b><i>Independent</i><b>''Utterly gripping'' </b>Anthony Beevor, <i>Daily Telegraph</i><b>''Enthralling . . . A reminder that heroism can be found in the most unlikely places''</b><i>Evening Standard</i><b>''I have seldom enjoyed a spy story more than this one'' </b>Max Hastings, <i>Sunday Times</i><b>_____________________</b>D-Day, 6 June 1944, the turning point of the Second World War, was a victory of arms. But it was also a triumph for a different kind of operation: one of deceit . . .At the heart of the deception was the ''Double Cross System'', a team of double agents whose bravery, treachery, greed and inspiration succeeded in convincing the Nazis that Calais and Norway, not Normandy, were the targets of the 150,000-strong Allied invasion force. Under the direction of an eccentric but brilliant intelligence officer in tartan trousers, working from a smoky lair in St James''s, these spies would weave a web of deception so intricate that it ensn