Oswald de Lacy was never meant to be the Lord of Somerhill Manor. Despatched to a monastery at the age of seven, sent back at seventeen when his father and two older brothers are killed by the Plague, Oswald has no experience of running an estate. He finds the years of pestilence and neglect have changed the old place dramatically, not to mention the attitude of the surviving peasants. Yet some things never change.

In 1829, disillusioned young doctor Mungo Lyon is recruited by the Crown to investigate a mysterious murder and shipwreck off the coast of Scotland. His adventures lead him on a pursuit across the Scottish countryside, to kidnap and treason, an unwanted trip to the West Indies, an insurrection and love. 

1961. Hidden deep within the forests of central Soviet Russia is a place that doesn’t appear on any map: a city called Arzamas-16. Here a community of dedicated scientists, technicians and engineers are building the most powerful nuclear device the world will ever see - 3,000 times more powerful than Hiroshima. But 10 days before the bomb is to be tested, a young physicist is found dead. His body contains enough radioactive poison to kill thousands. The Arzamas authorities believe it is suicide - they want the corpse disposed of and the incident forgotten.

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.

London, 1654. Oliver Cromwell is at the height of his power and has declared himself Lord Protector. Yet he has many enemies at home and abroad. London is a complex web of spies and merchants, priests and soldiers, exiles and assassins. One of the web's most fearsome spiders is Damian Seeker, agent of the Lord Protector. No one knows where Seeker comes from, who his family is, or even his real name. All that is known of him for certain is that he is utterly loyal to Cromwell and that nothing can be long hidden from him.

The English Army is besieging Carrickfergus in Ireland. Brilliant but unusual gunner Holcroft Blood of the Royal Train of Artillery is ready to unleash his cannons on the rebellious forces of deposed Catholic monarch James II. But this is more than war for Captain Blood; a lust for private vengeance burns within him. French intelligence agent Henri d'Erloncourt has come across the seas to foment rebellion against William of Orange, the newly installed Dutch ruler of England, Scotland and Ireland. 

Balthazar Kovacs, a detective on Budapest's murder squad, is on the trail of a dead man. Minutes ago, Kovacs received an anonymous SMS showing a body and an address: 26 Republic Square - the former Communist Party headquarters and once the most feared building in the country. But now, amid the ruins of the demolished building, Kovacs finds no dead body, just six members of the Gendarmerie - an elite police force reporting directly to the prime minister - and an invitation to hand over his phone and cease his investigation.

LONDON, 1590. Queen Elizabeth I's control over her kingdom is wavering. Amidst a tumultuous backdrop of Spanish plotters, Catholic heretics and foreign wars threatening the country's fragile stability, the body of a small boy is found in the City of London, with strange marks that no one can explain. When idealistic physician Nicholas Shelby finds another body displaying the same marks only days later, he becomes convinced that a killer is at work, preying on the weak and destitute of London.  

When a boarding school master at an exclusive boys' school is shot dead, it is deemed accidental. A lazy and usually drunk detective is sent to write up the report. Cardilini unexpectedly does not cooperate, as he becomes riled by the privileged arrogance of those at the school. He used to have instincts. Perhaps he should follow them now...With no real evidence he declares the shooting a murder and puts himself on a collision course with the powerful and elite of Perth. As he peels back layers, the school's dark secrets begin to emerge. 

1939. As Europe teeters on the brink of war, Alfred Kendall is tasked with carrying out a minor mission for the British Intelligence Service. Travelling to Prague, he takes his troubled young son, Hugh, as cover.  When Hitler invades Czechoslovakia, Alfred is given an ultimatum by the Czech Resistance. They will arrange for him to return to England, but only if he leaves his son Hugh behind as collateral. Hugh is soon taken under the wing of a Nazi colonel - Helmuth Scholl. 

FBI Agent Nell Flynn is about to work the most personal case of her life. Back home for the first time in a decade, Nell is getting ready to close the family estate after her father's death. But there's one piece of unfinished business. Her father, a homicide detective, was investigating the murders of two young women. Now his partner has asked for Nell's help. Nell soon realises that her father should be the prime suspect, and that his friends on the force are covering for him. 

It's been a year since Leo Stanhope lost the woman he loved and came closing to losing his own life. Now he is determined to keep his head down and stay safe. But Leo's hopes for peace are shattered when the police unexpectedly arrive: a woman has been found murdered at a club for anarchists, and Leo's address is in her purse. When Leo is taken to the club by the police there is a man there from his past who knows Leo's birth identity. And if Leo does not provide him with an alibi for the night of the killing, he is going to share this information with the authorities.

Falkenberg, Sweden. The mutilated body of talented young jewellery designer, Linnea Blix, is found in a snow-swept marina. Hampstead Heath, London. The body of a young boy is discovered with similar wounds to Linnea's. Buchenwald Concentration Camp, 1944. In the midst of the hell of the Holocaust, Erich Hebner will do anything to see himself as a human again. Are the two murders the work of a serial killer, and how are they connected to shocking events at Buchenwald?

Winter, 1670. Holcroft Blood has entered the employ of the powerful Duke of Buckingham. It is here that his education really begins. With a gift for numbers, Holcroft soon proves invaluable to the Duke, but when he's pushed into a betrayal he risks everything for revenge. His father, Colonel Thomas Blood, has fallen on hard times. When he's asked to commit treason by stealing the crown jewels, he puts himself and his family in a dangerous situation.

The year is 1793, Stockholm. King Gustav of Sweden has been assassinated, years of foreign wars have emptied the treasuries and the realm is governed by a self-interested elite, leaving its citizens to suffer. On the streets, malcontent and paranoia abound. A body is found in the city's swamp by a watchman, Mickel Cardell, and the case is handed over to investigator Cecil Winge, who is dying of consumption.