Hugh Legat is a rising star of the British diplomatic service, serving at 10 Downing Street as a private secretary to the Prime Minister, Neville Chamberlain. Paul von Hartmann is on the staff of the German Foreign Office - and secretly a member of the anti-Hitler resistance. The two men were friends at Oxford in the 1920s, but have not been in contact since. Now, when Hugh flies with Chamberlain from London to Munich, and Hartmann travels on Hitler's train overnight from Berlin, their paths are set on a disastrous collision course.

Paris in 1895: Alfred Dreyfus, a young Jewish officer, has just been convicted of treason, sentenced to life imprisonment at Devil's Island, and stripped of his rank in front of a baying crowd of 20,000. Among the witnesses to his humiliation is Georges Picquart, the ambitious, intellectual, recently promoted head of the counterespionage agency that Dreyfus had passed secrets to the Germans. At first, Picquart firmly believes in Dreyfus' guilt. But it is not long after Dreyfus is delivered to his desolate prison that Picquart stumbles on information that leads him to suspect that there is still a spy at large in the French military.

Rudi Graf is an engineer who always dreamed of sending rockets to the moon. But instead, he finds himself working alongside Wernher von Braun, launching V2 rockets at London for the Nazis from a bleak seaside town in occupied Holland. As the SS increases its scrutiny of the project, Graf, an engineer more than a soldier, has to muster all of his willpower to toe the party line. And when rumors of a defector circulate through the German ranks, Graf becomes a prime suspect.

Berlin, 1964. The Greater German Reich stretches from the Rhine to the Urals and keeps an uneasy peace with its nuclear rival, the United States. As the Fatherland prepares for a grand celebration honoring Adolf Hitler's 75th birthday and anticipates a conciliatory visit from US president Joseph Kennedy and ambassador Charles Lindbergh, a detective of the Kriminalpolizei is called out to investigate the discovery of a dead body in a lake near Berlin's most prestigious suburb.

The pope is dead. Behind the locked doors of the Sistine Chapel, 118 cardinals from all over the globe will cast their votes in the world's most secretive election. They are holy men. But they have ambition. And they have rivals. Over the next 72 hours, one of them will become the most powerful spiritual figure on earth.

1468. A young priest, Christopher Fairfax, arrives in a remote Exmoor village to conduct the funeral of his predecessor. The land around is strewn with ancient artifacts - coins, fragments of glass, human bones - which the old parson used to collect. Did his obsession with the past lead to his death? Fairfax becomes determined to discover the truth. Over the course of the next six days, everything he believes - about himself, his faith, and the history of his world - will be tested to destruction.

When Tiro, the confidential secretary (and slave) of a Roman senator, opens the door to a terrified stranger on a cold November morning, he sets in motion a chain of events that will eventually propel his master into one of the most suspenseful courtroom dramas in history.

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.

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.

A killer going by the name of "Crimson Jack" is stalking the wartime streets of London, murdering women on the exact dates of the infamous Jack the Ripper killings of 1888. Has the Ripper somehow returned from the grave? Is the self-styled Crimson Jack a descendant of the original Jack-or merely a madman obsessed with those notorious killings?

His name was Feliks. He came to London to commit a murder that would change history. A master manipulator, he had many weapons at his command, but against him were ranged the whole of the English police, a brilliant and powerful lord, and the young Winston Churchill himself. These odds would have stopped any man in the world - except the man from St. Petersburg.

1942: a German spy comes ashore on a desolate stretch of Lincolnshire beach. But he is hunted down by a young detective, Richard Prince. The secret services have need of a man like him.... In occupied Europe, Denmark is a hotbed of problems for British intelligence. Rumours of a war-ending weapon being developed by the Germans are rife. Sent to Copenhagen, Prince is soon caught in a deadly game of cat and mouse. Dodging Gestapo agents, SS muscle and the danger of betrayal, his survival - and the war effort - hangs in the balance.

Northern Ireland, spring 1981. Hunger strikes, riots, power cuts, a homophobic serial killer with a penchant for opera, and a young woman’s suicide that may yet turn out to be murder: on the surface, the events are unconnected, but then things—and people—aren’t always what they seem. Detective Sergeant Duffy is the man tasked with trying to get to the bottom of it all. It’s no easy job—especially when it turns out that one of the victims was involved in the IRA but was last seen discussing business with someone from the loyalist Ulster Volunteer Force.

Julian Lawndsley has renounced his high-flying job in the city for a simpler life running a bookshop in a small English seaside town. But only a couple of months into his new career, Julian’s evening is disrupted by a visitor. Edward, a Polish émigré living in Silverview, the big house on the edge of town, seems to know a lot about Julian’s family and is rather too interested in the inner workings of his modest new enterprise.

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.