The first ever complete history of MI5. Covers the entire history of MI5 from its creation in 1909 to its present day battles with Al Qaeda.Includes the amazing stories of MI5 agents during WW1 and WW2 including all the notorious "Double Cross (XX)" operatives."PO Box 500, London W2" - the nondescript address from behind which one of the world"s most famous secret services hid: MI5. Drawing on previously secret sources, this book lifts the lid on Britain"s Security Service in its battle against German and Soviet espionage. It tells the sensational stories of the officers and agents and the enemies they confronted, from MI5"s creation in 1909 under the direction of Vernon Kell, Britain"s first spymaster.During the Second World War, the Security Service, through brilliant officers such as Guy Liddell, Dick White and the fearsome spy-breaker "Tin-eye" Stephens, commandant of MI5"s interrogation centre Camp 020, successfully ran the Double Cross (XX) system. XX agents such as the dynamic, womanising petty criminal ZIGZAG, the suave TRICYCLE and the aptly named CARELESS laid the basis for Operation FORTITUDE, in which MI5"s agents BRUTUS and GARBO were central to the success of the greatest deception in modern military history: convincing Hitler that the D-Day landings in Normandy were an elaborate diversion to the "real" Allied landings at Calais. It was MI5"s finest hour.