As senior MI6 Officer Kate Henderson arrives for a weekend away in Venice, a Russian spy enters the city with plans to kidnap her. But it’s not all it seems. The defector offers her conclusive evidence that the British prime minister is a live agent working for Moscow. Kate’s holiday quickly becomes the start of her next mission. With proof of the PM involved in a sordid scandal and a financial paper trail that undeniably links him to the Russians, the evidence seems bulletproof. But is anything in the dark world of espionage ever that simple?

Attempting to rebuild her shattered life in the South of France, former MI6 operative Kate Henderson receives an unexpected and most unwelcome visit from an old adversary: the UK prime minister. He has an extraordinary story to tell - and he needs her help. A Russian agent has come forward with news that the PM has been the victim of the greatest misinformation play in the history of MI6. It's run out of a special KGB unit that exists for one purpose alone: to process the intelligence from 'Agent Dante', a mole right at the heart of MI6 in London.

Nothing good ever comes from a midnight phone call. For washed-up spy Harry Tower, it is the worst news at the worst possible time. His son, Sean, has gone missing in troubled Iran after writing an exposé about government corruption. Their relationship has never recovered since Harry's wife's suicide, for which Sean holds his father responsible. And Harry, with his career on the verge of disintegration, needs to find him and put things right.

A Russian defector is found brutally murdered in a London hotel. Only four people knew he had turned - the four most important and powerful figures in Whitehall. There's only one conclusion - a mole has infiltrated the highest levels of the nation's security. Operating in secret from within Westminster's darkest corners, former spy Solomon Vine must uncover the traitor. Because Britain's future hangs in the balance. And with it the fate of the whole world.

When disgraced spy Solomon Vine's friend and rival Gabriel Wilde vanishes without trace, it's only Vine who might be able to discover what has happened to him. A single missing file holds the key. That, too, is gone. But its contents, Vine is told, are incendiary. There were few Wilde could trust. And being one of them appears to have fatal consequences. But as Vine's off-the-books investigation begins to reveal the shocking truth, he realizes there's much more at stake than one man's life.

In 1988, Harry made one mistake: he took a bribe, letting a man he knew as Igor into Britain - and he’s regretted it ever since. So when he recognises Igor many years later as his newly elected MP, he knows he has to come clean. But the MP recognises him, too - and Harry fears what he might do next.

1993: student Lachlan Kite is sent to post-Soviet Russia in the guise of a language teacher. In reality, he is there as a spy. Top secret intelligence agency BOX 88 has ordered Kite to extract a chemical weapons scientist before his groundbreaking research falls into the wrong hands. But Kite’s mission soon goes wrong and he is left stranded in a hostile city with a former KGB officer on his trail.

On the morning of the Tory Party conference, the bones of a young woman’s hand are discovered in a London building site. Prime Minister Robin Sandford is accused of killer her. With his career on the brink of ruin, he enlists the unofficial help of MI5. A decision which leads him into a new world of espionage, mass executions and murder. The deeper he goes, the more treacherous the game becomes. And if he fails to expose the truth, the whole country will pay the price…

Slough House is Jackson Lamb’s kingdom; a dumping ground for members of the intelligence service who’ve screwed up: left a secret file on a train, blown surveillance, or become drunkenly unreliable. They’re the service’s poor relations – the slow horses – and bitterest among them is River Cartwright, whose days are spent transcribing mobile phone conversations.

MI5 Intelligence Officer Liz Carlyle is summoned to a meeting with her boss Charles Wetherby, head of the Service's Counter-Espionage Branch. His counterpart over at MI6 has received alarming intelligence from a high-placed Syrian source. The future of the whole of the Middle East is at stake and the deadline for action is drawing ever closer....

MI6's Head of Station in Turkey is killed in a mysterious plane crash. Amelia Levene, chief of the Secret Intelligence Service, wants the incident investigated - quickly and quietly. The only man she can trust is Thomas Kell, a disgraced spy searching for redemption. Arriving in Istanbul, Kell discovers that MI6 operations in the region have been fatally compromised: a traitor inside Western Intelligence threatens not just the Special Relationship, but the security of the entire Middle East.

Europe is still littered with the darkest secrets of the Cold War. And the most deadly revelation of them all is about to be made…Hard-up Russia expert Dr Sam Gaddis finally has a lead for a book that could set his career back on track. He has staggering new information about an unknown sixth member of the infamous Cambridge spy ring – a man who has evaded detection for his entire life

Successful novelist Kit Carradine has grown restless. So when British Intelligence invites him to enter the secret world of espionage, he willingly takes a leap into the unknown. But the glamour of being a spy is soon tainted by fear and betrayal, as Carradine finds himself in Morocco on the trail of Lara Bartok - a mysterious fugitive with links to international terrorism.

Deep within the Arctic Circle, three environmental scientists from the trudge through a blizzard landscape in search of shelter. There's a cabin ahead. It appears abandoned. The first thing the team's medic, Dr Sheila Mackenzie, notices when she enters is the smell. It's rank, rotting, foetid. Then suddenly there's movement. A figure, barely recognisable as human, lies slumped on a sofa, his face staring back at her in the torchlight. It's hideously disfigured by livid pustules, rivulets of blood run from his nostrils, his chest covered in black bile.

Berlin. 1963. The height of the Cold War and an early morning spy swap. On one side of the trade: Martin Keller, an American physicist who once made headlines, but who then disappeared into the English prison system. Keller's most critical possession: his American passport. Keller's most ardent desire: to see his ex-wife, Sabine, and their young son. But Martin has questions: who asked for him? Who negotiated the deal? Just the KGB bringing home one of its agents? Or, as he hopes, a more personal intervention?