Cover subtitle: The story of MI6 communications, 1939-1945.

Gordon Thomas has established himself as a leading expert on the intelligence community. He returns here on the one hundredth anniversaries of Britain's Security and Secret Intelligence Services to provide the definitive history of the famed MI5 and MI6. These agencies rank as two of the oldest and most powerful in the world, and Thomas's wide-sweeping history chronicles a century of both triumphs and failures. He recounts the roles that British intelligence played in the Allied victory in World War II; the postwar treachery of Great Britain's own agents; the defection of Soviet agents and the intricate process of "handling" them; the often frigid relationship that both agencies have had with the CIA, European spy services, and the Mossad; the cooperation between the British and Americans in the search for Osama bin Laden; and the ways in which MI5 and MI6 have fought biological warfare espionage and space terrorism. All told, this is the story of two agencies led by men---and women---who are enigmatic, eccentric, and controversial, and who ruthlessly control their spies. Based on prodigious research and interviews with significant players from inside the British intelligence community, this is a rich and even delicious history packed with intrigue and information that only the author could have attained.

Behind the celebrated code-breaking at Bletchley Park lies another secret… The men and women of the ‘Y’ (for Wireless’) Service were sent out across the world to run listening stations from Gibraltar to Cairo, intercepting the German military’s encrypted messages for decoding back at the now-famous Bletchley Park mansion. Such wartime postings were life-changing adventures – travel out by flying boat or Indian railways, snakes in filing cabinets and heat so intense the perspiration ran into your shoes - but many of the secret listeners found lifelong romance in their far-flung corner of the world. Now, drawing on dozens of interviews with surviving veterans, Sinclair McKay tells their remarkable story at last.

For the first time, the inside story of the brilliant American engineer who defeated Enigma and the Nazi code-masters Much has been written about the success of the British “Ultra” program in cracking the Germans’ Enigma code early in World War II, but few know what really happened in 1942, when the Germans added a fourth rotor to the machine that created the already challenging naval code and plunged Allied intelligence into darkness. Enter one Joe Desch, an unassuming but brilliant engineer at the National Cash Register Company in Dayton, Ohio, who was given the task of creating a machine to break the new Enigma settings. It was an enterprise that rivaled the Manhattan Project for secrecy and complexity–and nearly drove Desch to a breakdown. Under enormous pressure, he succeeded in creating a 5,000-pound electromechanical monster known as the Desch Bombe, which helped turn the tide in the Battle of the Atlantic–but not before a disgruntled co-worker attempted to leak information about the machine to the Nazis. After toiling anonymously–it even took his daughter years to learn of his accomplishments–Desch was awarded the National Medal of Merit, the country’s highest civilian honor. In The Secret in Building 26, the entire thrilling story of the final triumph over Enigma is finally told.

A quiet market town with no military presence was chosen as the secret communications centre for Britain as the country prepared for war with Germany in 1937. When hostilities began, ' Q Central' attracted a dozen other clandestine operations set up to defend the country or designed to confuse and undermine enemy morale. The headquarters of radar, RAF Group 60, also came to Leighton Buzzard to be hidden from German attack and to be close to the telephone and radio communications needed to run its vast chain of radar stations. These directed the defending fighters that saved the country in the Battle of Britain and then took the bombing war to Germany. Close by, for the same reasons of secrecy and safety, were the satellite stations of Bletchley Park, the now famous code-breaking centre; the Met Office at Dunstable, which gave the all clear for the D-Day landings; Black Ops units that set up false radio stations and wrote propaganda to confuse the enemy; and airfields used for dropping agents behind enemy lines. At Q Central itself was the largest telephone exchange in the world, with more than 1,000 teleprinters communicating with all the armed services in every theatre of war and directing the operations of the secret services. Now the restrictions of the Official Secrets Act have been lifted, enabling eight members of the Leighton Buzzard and District Archaeology and History Society to piece together this compelling story for the first time.

The authorized history of the world's oldest and most storied foreign intelligence service, drawing extensively on hitherto secret documents Britain's Special Intelligence Service, commonly called MI6, is not only the oldest and most storied foreign intelligence unit in the world - it is also the only one to open its archives to an outside researcher. The result, in this authorized history, is an unprecedented and revelatory look at an organization that essentially created, over the course of two world wars, the modern craft of spying. Here are the true stories that inspired Ian Fleming's James Bond's novels and John le Carré George Smiley novels. Examining innovations from invisible ink and industrial-scale cryptography to dramatic setbacks like the Nazi sting operations to bag British operatives, this groundbreaking history is as engrossing as any thriller - and much more revealing. "Perhaps the most authentic account one will ever read about how intelligence really works." -The Washington Times