George Smiley is one of the most brilliantly realised characters in British fiction. Bespectacled, tubby, eternally middle-aged, and deceptively ordinary, he has a mind like a steel trap and is said to possess 'the cunning of Satan and the conscience of a virgin'. Miss Ailsa Brimley is in a quandary. She's received a peculiar letter from Mrs Stella Rode, saying that she fears her husband – an assistant master at Carne School - is trying to kill her. Reluctant to go to the police, Miss Brimley calls upon her old wartime colleague, George Smiley.

Once, the distinctions were clear: the Circus handled all things political while the Department dealt with matters military. But over the years the power and influence had passed to the Circus. Now suddenly the department had a job on its hands. Uncertain evidence suggested Soviet missiles being put in place near the German border, while vital film had gone missing and a courier was dead.

This novel, set in London in the late 1950s, finds George Smiley engaged in the humdrum job of security vetting. But when a Foreign Office civil servant commits suicide after an apparently unproblematic interview, Smiley is baffled. Refusing to believe that Fennan shot himself soon after making a cup of cocoa and asking the exchange to telephone him in the morning, Smiley decides to investigate – only to uncover a murderous conspiracy.

Mr George Smiley is small, podgy, and at best, middle-aged. He is disillusioned, wrestles with idleness, and has been deserted by his beautiful wife. He is also compassionate, ruthless, and a senior British intelligence officer in short-lived retirement from the Circus, the British Secret Service organisation situated in London. But Moscow centre has infiltrated a mole into the Circus, and it's more than likely the perpetrator is Karla, Smiley's old adversary and his opposite number in Moscow.

George Smiley has become chief of the battered British Secret Service. The betrayals of a Soviet double agent have riddled the spy network, and Smiley wants revenge. He chooses his weapon: Jerry Westerby, "The Honourable Schoolboy", a passionate lover, and a seasoned, reckless secret agent. Westerby is pointed east, to Hong Kong. So begins the terrifying game.

Magnus Pym, counsellor at the British Embassy in Vienna, has suddenly vanished, believed defected. The chase is on for a missing husband, a devoted father, and a life-time secret agent. Pym's life, it is revealed, is entirely made up of secrets. The race is on to find the perfect spy.

The Berlin Wall is down, the Cold War is over, but the world's second oldest profession is very much alive. Smiley accepts an invitation to dine with the eager young men and women of the Circus' latest intake; and over coffee and brandy, by flickering firelight, he beguilingly offers them his personal thoughts on espionage past, present, and future. In doing so, he prompts one of his former Circus colleagues into a searching examination of his own eventful secret life.

Peter Guillam, staunch colleague and disciple of George Smiley of the British Secret Service, is living out his old age on the family farmstead in Brittany when a letter summons him to London. The reason? His Cold War past has come back to claim him. Intelligence operations that were once the toast of secret London and involved such characters as Alec Leamas, Jim Prideaux, George Smiley and Peter Guillam himself are to be scrutinised under disturbing criteria by a generation with no memory of the Cold War.

The British Embassy in Bonn is up in arms. Her Majesty's financially troubled government is seeking admission to Europe's Common Market just as anti-British factions are rising to power in Germany. Rioters are demanding reunification, and the last thing the Crown can afford is a scandal. Then Leo Harting - an embassy nobody - goes missing with a case full of confidential files. London sends Alan Turner to control the damage, but he soon realises that neither side really wants Leo found - alive.

The night manager is Jonathan, a veteran of clandestine operations. In flight from a failed marriage and his own past, he has taken refuge in the luxury hotel trade. Yet he finds no escape from his demons. Driven by a desire for atonement and by an inherited patriotism, Jonathan allows himself to be recruited as a British secret agent with a mission to expose the murderer of the woman he himself betrayed. His odyssey takes him across Britain and Canada to the Caribbean and the jungles of Panama. But there are more treacherous jungles still in Whitehall and Washington.

Lured by Israeli intelligence into the world of espionage, Charlie, a young actress, is plunged into a deceptive and delicate trap to ensnare an elusive Palestinian terrorist.

Featuring George Smiley, this New York Times best seller is the first instalment in John le Carré’s acclaimed Karla trilogy. The man he knew as 'Control' is dead, and the young Turks who forced him out now run the circus. But George Smiley isn't quite ready for retirement - especially when a pretty, would-be defector surfaces with a shocking accusation: a Soviet mole has penetrated the highest level of British Intelligence.

Nat, a 47-year-old veteran of Britain's Secret Intelligence Service, believes his years as an agent runner are over. He is back in London with his wife, the long-suffering Prue. But with the growing threat from Moscow Centre, the office has one more job for him. Nat is to take over The Haven, a defunct substation of London General with a rag-tag band of spies. The only bright light on the team is young Florence, who has her eye on Russia Department and a Ukrainian oligarch with a finger in the Russia pie.  

In the quiet Cotswolds village of Great Rollright in 1944, a thin and unusually elegant housewife emerged from her cottage to go on her usual bike ride. A devoted mother of three, attentive wife and friendly neighbour, Sonya Burton seemed to epitomise rural British domesticity. However, rather than pedalling towards the shops with her ration book, Sonya was heading for the Oxfordshire countryside to gather scientific secrets from a nuclear physicist. Secrets that would enable the Soviet Union to build the atomic bomb.

'Out of the secret world I once knew, I have tried to make a theatre for the larger worlds we inhabit. First comes the imagining, then the search for reality. Then back to the imagining, and to the desk where I'm sitting now.' The Pigeon Tunnel, John le Carré's memoir and his first work of nonfiction, is a thrilling journey into the worlds of his 'secret sharers' - the men and women who inspired some of his most enthralling novels - and a testament to the author's extraordinary engagement with the last half century.