Alternate history meets Cold War thriller in a vintage Len Deighton escapade11 June, 1940 - where is Winston Churchill?A private aircraft takes off from a small town in central France, while Adolf Hitler, the would-be conqueror of Europe, prepares for a clandestine meeting near the Belgian border.For more than forty years the events of this day have been Britain"s most closely guarded secret. Anyone who learns of them must die - with their file stamped:XPD - expedient demise.