No one thinks very much at all about carwash employee Davey Burnet, until one day he takes the wrong customer's motor for a ride. One kidnapping later, he and the carwash are officially part of Glasgow's criminal underworld, working for a psychopath who enjoys playing games like "Keep Yer Kneecaps" with any poor bastard who crosses him. Can Davey escape from the gang's clutches with his kneecaps and life intact? Perhaps this polis Ally McCoist who keeps nosing around the carwash could help. That's if she doesn't get herself killed first.

London, 1954. Eva Georgiou has just returned from her shift at the glamorous Café de Paris, when she's summoned to her second job: Greek interpreter for the Metropolitan Police. There, she is tasked with representing Zina Pavlou, a Cypriot woman who has been accused of the brutal murder of her daughter-in-law who has been bludgeoned, strangled and then set alight. Eva gets to work as Zina's translator, but her concern grows that the case may be more complicated than it seems.

Copenhagen author Hannah is the darling of the literary community and her novels have achieved massive critical acclaim. But nobody actually reads them, and frustrated by writer's block, Hannah has the feeling that she's doing something wrong. When she expresses her contempt for genre fiction, Hanna is publicly challenged to write a crime novel in 30 days. Scared that she will lose face, she accepts, and her editor sends her to Húsafjöður; a quiet, tight-knit village in Iceland, filled with colourful local characters - for inspiration.

Only she knows the truth. Only he can tell the world. Vienna, 1946. A brilliant German scientist spirited out of the ruins Nazi Europe in search of a new life. Moscow, 1964. A rising star of the British diplomatic service whose job is not what it seems. London, the present day. A once promising academic offered an opportunity to seal his place in history. Their stories, their lives, and the fate of the world, are bound by a single document: The Scarlet Papers. The devastating secrets contained within teased by a brief invitation: Tomorrow 11AM. Take a cab and pay in cash. Tell no one.

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.