An “invisible” is CIA-speak for the ultimate intelligence nightmare: The terrorist who, because he or she is an ethnic native of the target country, can cross its borders unchecked, move around that country unquestioned, and infiltrate its institutions with ease. An invisible on mainland Britain was the worst possible news. For Liz Carlyle, an MI5 Intelligence Officer, this report from MI6 marks the start of an operation that will test her to the limit and put her own life in jeopardy.

CIA Case Officer Sam Joseph is dispatched to Paris to recruit Syrian Palace official Mariam Haddad. The two fall into a forbidden relationship, which supercharges Haddad's recruitment and creates unspeakable danger when they enter Damascus to find the man responsible for the disappearance of an American spy. But the cat-and-mouse chase for the killer soon leads to a trail of high-profile assassinations and the discovery of a dark secret at the heart of the Syrian regime.

Espionage. Blackmail. Revenge. Cunning. Slapstick. State secrets dating back to the fall of the Berlin Wall. All this and more in a tight package of five novellas by Mick Herron, CWA Gold Dagger-winning author of Slow Horses.

Two years ago, a hostile Prime Minister launched the Monochrome inquiry, investigating "historical over-reaching" by the British Secret Service “to investigate historical over-reaching.” Monochrome’s mission was to ferret out any hint of misconduct by any MI5 officer—and allowed Griselda Fleet and Malcolm Kyle, the two civil servants seconded to the project, unfettered access to any and all confidential information in the Service archives in order to do so. But MI5’s formidable First Desk did not become Britain’s top spy by accident, and she has successfully thwarted the inquiry at every turn.

When Berta Isla was a schoolgirl, she decided she would marry Tomás Nevinson - the dashing half-Spanish, half-English boy in her class with an extraordinary gift for languages. But when Tomás returns to Madrid from his studies at Oxford, he is a changed man. Unbeknownst to her, he has been approached by an agent from the British intelligence services, and he has unwittingly set in motion events that will derail forever the life they had planned.

After the assassination of his wife and son, Gabriel Allon retires from his brutal anti-terrorist career and loses himself in his previous cover job: art restoration. But when Tariq al-Hourani, the Palestinian terrorist responsible for his family’s death, begins a killing spree designed to destroy Middle East peace talks, Gabriel once again slips into the shadowy world of international intrigue. In a global game of hide-and-seek, the motives of Gabriel and Tariq soon become more personal than political.

Lyndsey was once a top handler in the Moscow Field Station, where she was known as the "human lie detector" and praised for recruiting some of the most senior Russian officials. But now, three Russian assets have been exposed - including one of her own - and the CIA is convinced there's a mole in the department. With years of work in question and lives on the line, Lyndsey is thrown back into life at the agency, this time tracing the steps of those closest to her.

Harriet Vanger, a scion of one of Sweden's wealthiest families disappeared over forty years ago. All these years later, her aged uncle continues to seek the truth. He hires Mikael Blomkvist, a crusading journalist recently trapped by a libel conviction, to investigate. He is aided by the pierced and tattooed punk prodigy Lisbeth Salander. Together they tap into a vein of unfathomable iniquity and astonishing corruption.

Four in the morning, mid-December, and snow blankets St. Andrews School. Student Alex Gilbery and his three best friends are staggering home from a party when they stumble upon the body of a young woman. Rosie Duff has been raped, stabbed and left for dead in the ancient Pictish cemetery. The only suspects are the four young students stained with her blood. Twenty-five years later, police mount a cold case review. Among the unsolved murders they're examining is that of Rosie Duff. But someone else has his own idea of justice.

Berlin, 1963. An early morning spy swap, not at the familiar setting for such exchanges, nor at Checkpoint Charlie, where international visitors cross into the East, but at a more discreet border crossing, usually reserved for East German VIPs. The Communists are trading two American students caught helping people to escape over the wall and an aging MI6 operative. On the other side of the trade: Martin Keller, a physicist who once made headlines, but who then disappeared into the English prison system.

The story opens with the apparently accidental drowning of a sixth form student in the Norfolk countryside. As a matter of routine, or so it seems, the case passes across the desk of Detective Sergeant Smith, recently returned to work after an internal investigation into another case that has led to tensions between officers at Kings Lake police headquarters. As an ex-DCI, Smith could have retired by now, and it is clear that some of his superiors wish that he would do so.

1660 England. General Edward Whalley and his son-in law Colonel William Goffe board a ship bound for the New World. They are on the run, wanted for the murder of King Charles I—a brazen execution that marked the culmination of the English Civil War, in which parliamentarians successfully battled royalists for control.

In North Devon, where two rivers converge and run into the sea, Detective Matthew Venn stands outside the church as his estranged father’s funeral takes place. On the day Matthew left the strict evangelical community he grew up in, he lost his family, too. Now, as he turns and walks away again, he receives a call from one of his team. A body has been found on the beach nearby: a man with a tattoo of an albatross on his neck, stabbed to death. The case calls Matthew back to the people and places of his past, as deadly secrets hidden at their hearts are revealed.

Growing up, Bianca St. Ives knew she was different from all her friends. Instead of playing hopscotch or combing her dolls' hair, she studied martial arts with sensei masters and dismantled explosives with special-ops retirees. Her father prepped her well to carry on the family business. Now a striking beauty with fierce skills, the prodigy has surpassed the master.

London, 1992. Late one night, Edward Crane, 76, is declared dead at a London hospital. An obituary describes him only as a 'resourceful career diplomat'. But Crane was much more than that—and the circumstances surrounding his death are far from what they seem. Fifteen years later, academic Sam Gaddis needs money. When a journalist friend asks for his help researching a possible sixth member of the notorious Trinity spy ring, Gaddis knows that she's onto a story that could turn his fortunes around. But within hours the journalist is dead, apparently from a heart attack.