A Russian defector is found brutally murdered in a London hotel. Only four people knew he had turned - the four most important and powerful figures in Whitehall. There's only one conclusion - a mole has infiltrated the highest levels of the nation's security. Operating in secret from within Westminster's darkest corners, former spy Solomon Vine must uncover the traitor. Because Britain's future hangs in the balance. And with it the fate of the whole world.

When disgraced spy Solomon Vine's friend and rival Gabriel Wilde vanishes without trace, it's only Vine who might be able to discover what has happened to him. A single missing file holds the key. That, too, is gone. But its contents, Vine is told, are incendiary. There were few Wilde could trust. And being one of them appears to have fatal consequences. But as Vine's off-the-books investigation begins to reveal the shocking truth, he realizes there's much more at stake than one man's life.

Moscow, 1936. In a deconsecrated church, a young woman is found dead, her mutilated body displayed on the altar for all to see. Captain Alexei Dimitrevich Korolev is asked to investigate. But when he discovers that the victim is an American citizen, the NKVD - the most feared organisation in Russia - becomes involved. Soon, Korolev’s every step is under close scrutiny and one false move will mean exile to the frozen camps of the far north. Committed to uncovering the truth, Korolov enters the realm of the Thieves, who run Moscow’s underworld. 

London in the 1960s: gang wars, corrupt police, vice and pornography. Ex-boxer Charles Holborne has plenty of opportunities to build his reputation with the criminal classes as a barrister who delivers. But Charles, an East End boy made good, is not all he seems, and his past is snapping at his heels. When his philandering wife has her throat slashed, Holborne finds himself on the wrong side of the law and on the run. Can he discover the truth of the brutal slaying and escape the hangman's noose?

Criminal barrister Charles Holborne may have just escaped the hangman by proving he was framed for murder, but his life is now in ruins. His wife is dead, his high-flying career has morphed into criminal notoriety, and bankruptcy threatens. When the biggest brief of Charles' career unexpectedly lands on his desk, it looks as if he has been thrown a lifeline. But far from keeping him afloat, it drags him ever deeper into the shadowy underworld of 1960s London. Now, not only is his practice at stake, but his very life.