The year is 1931. The new and luxurious transatlantic liner Empress of Britain is on her eastward passage. Among the first-class passengers on board are two English confidence tricksters, making a discreet exit from a little awkwardness they have left behind them in the United States.

What value can be put on a human mind? How Joe Roberts does what he does is a mystery. He has a brain that seems able to outperform a computer. To a games company like Venstrom that promises big profits if his abilities can be properly exploited. So they send Nicole Nevinson to track him down and make him an offer too good to refuse.

Umiko Wada has had enough excitement in life. With an overbearing mother and her husband recently murdered, she just wants to keep her head down. As a secretary to a private detective, her life is pleasantly filled with coffee runs and paperwork. That is, until her boss takes on a new case. A case that is surrounded by shadows. A case that means Wada will have to leave Tokyo and travel to London.

On assignment in Vienna, photographer Ian Jarrett falls suddenly and desperately in love with a woman he meets by pure chance, Marian Esguard. Back in England, he separates from his wife and goes to meet Marian at an agreed rendezvous, only to hear her tell him on the telephone that she will not, after all, be coming. Then she vanishes from his life as mysteriously as she entered it. Who and where is the woman he met and fell in love with in Vienna?

It is January 1721. London is reeling from the effects of the greatest financial scandal of the age, the collapse of the South Sea Bubble. William Spandrel, a penniless mapmaker, is offered a discharge of his debts by his principal creditor, Sir Theodore Janssen, a director of the South Sea Company, on one condition: he must secretly convey an important package to a friend of Janssen's, Ysbrand de Vries, in Amsterdam.

Recovering from the recent tragedy of his wife's death in a cliff fall, Tony Sheridan goes to stay with his sister-in-law, Lucy, and her husband at their new home - Otherways - a strange circular, moated house. Disturbed by memories of his wife and a growing attraction to Lucy, Sheridan is also troubled by weird and vivid dreams. And as he and Lucy embark on a secret and passionate affair, Sheridan begins uncovering the truth about Otherways.

Harry Barnett, a middle-aged failure, leads a shabby existence. He is reduced to caretaking a friend's villa on the island of Rhodes and working in a bar to earn his keep. Then a guest at the villa - a young woman he had instantly warmed to - disappears on a mountain peak. Under suspicion of her murder, Harry becomes obsessed by the mystery that has changed his life and begins to trace back the movements and encounters that led to the moment where she vanished into the blue.

On a mild autumn afternoon in 1882, William Trenchard sits smoking his pipe in the garden of his comfortable family home. When the creak of the garden gate heralds the arrival of an unexpected stranger, he is puzzled but not alarmed. He cannot know the destruction this man will wreak on all he holds most dear.

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.

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.

A reluctant ex-spy with demons of her own, Elinor finds herself facing down one of the most dangerous organized crime gangs in London, ultimately exposing corruption from Scotland Yard to the highest levels of government. The private, quiet “Miss White" as Elinor is known, lives in a village in rural Kent, England, and to her fellow villagers seems something of an enigma. Well she might, as Elinor occupies a "grace and favor" property, a rare privilege offered to faithful servants of the Crown for services to the nation.

During intermission at the famed La Fenice opera house in Venice, Italy, a notoriously difficult and widely disliked German conductor is poisoned—and suspects abound. Guido Brunetti, a native Venetian, sets out to unravel the mystery behind the high-profile murder. To do so, he calls on his knowledge of Venice, its culture, and its dirty politics. Along the way, he finds the crime may have roots going back decades—and that revenge, corruption, and even Italian cuisine may play a role.

In 1915, Sherlock Holmes is retired and quietly engaged in the study of honeybees in Sussex when a young woman literally stumbles onto him on the Sussex Downs. Fifteen years old, gawky, egotistical, and recently orphaned, the young Mary Russell displays an intellect to impress even Sherlock Holmes. Under his reluctant tutelage, this very modern, twentieth-century woman proves a deft protégée and a fitting partner for the Victorian detective.

“In wartime,” Winston Churchill wrote, “truth is so precious that she should always be attended by a bodyguard of lies.” For Britain’s counterintelligence operations, this meant finding the unlikeliest agent imaginable - a history professor named Alfred Vicary, handpicked by Churchill himself to expose a highly dangerous, but unknown, traitor. The Nazis, however, have also chosen an unlikely agent.

London, 1944. While the Luftwaffe makes its final assault on the already battered British capital, Londoners rush through the streets, seeking underground shelter in the midst of the city's blackout. When the panic subsides, other things begin to surface along with London's war-worn citizens. A severed arm is discovered by a group of children playing at an East End bomb site, and when Scotland Yard's Detective Sergeant Frederick Troy arrives at the scene, it becomes apparent that the dismembered body is not the work of a V-1 rocket.