New York art expert Colin Grant is sent to Vienna and bid on a priceless Old Master on behalf of a Texan millionaire. No sooner has Grant landed in Austria than his seemingly simple assignment turns into a nightmare, as he finds himself at the center of a conspiracy to unleash a wave of international terrorism.

Chuck Kelso is an idealist. When he steals a top-secret NATO memorandum, he only intends to leak it to the press; but it is soon in the hands of a Russian agent, a man who has spent nine years quietly working himself into the fabric of Washington society. Within hours it has reached the KGB, and the CIA’s top man in Moscow has had his cover blown. For British agent Tony Lawton, hunting down the Russian operative—the "agent in place"—is a welcome challenge. But for Chuck’s brother, the journalist Tom Kelso, and his beautiful wife, Thea, the affair has unleashed a very special terror.

Irina Kusak’s recently divorced husband, Jiri Hrádek, is a high-ranking official in the Czechoslovakian secret police: cruel, ambitious, utterly ruthless. So when he turns a blind eye to her defection to the West, she is uneasy. Aided in her escape by a group of friends, including David Mennery, an American with whom she once had a passionate affair, Irina begins to feel herself truly free. But soon their journey becomes a nightmare. It becomes clear that Hrádek only allowed Irina to defect in order to bait a trap for her father.

It was 1953, and nothing could shake William Denning’s resolve to leave the army and return to the States. Nothing, except one of the largest diamond hauls ever—which, in the wrong hands, on the wrong side of the Iron Curtain, was a potentially lethal force. In a small village in the Swiss mountains, Denning discovered that there was not only a jewelry robbery at stake. In the ruthless world of espionage and international conspiracy, his adversaries were the most unlikely people—and the most dangerous.

Under the Mediterranean sun, a drama begins in a café in Málaga. For Ian Ferrier, an employee of the United States Space Agency on holiday to visit his old friend Jeff Reid, it means the startling discovery that Reid is not just a wine exporter, but rather engaged in smuggling communist defectors to the West. Events take a turn for the worse when Ferrier, a stranger to the deadly world of espionage, must take sole charge of a high-ranking KGB agent. Alone in an frighteningly alien landscape, he can afford no mistakes when choosing whom to trust …

British soldier Peter Lennox, a POW in an Italian prison camp, is still fighting his own war. An artist in civilian life, his hands bear the scars of wounds received during his capture at the fall of Tobruk, and he suspects he will never paint again. The only thing that sustains him is plotting his escapes, no matter how many times he is recaptured. But in September 1943 the Italians surrender to the Allies, and Lennox is free.

While carrying out research in Paris, American historian John Craig is surprised when he runs into his old college professor. Sussman is a worried man. A survivor of Auschwitz, he in shock, having seen and been seen by one of the Nazis who tortured him in the camp. But SS Colonel Berg has been dead for 10 years—or has he? Before Craig can help solve the riddle, Sussman is found dead, and Craig is being questioned by the police. As various international organizations are drawn into the hunt for Sussman’s killer, he realizes the ex-Nazi is far more than just a wanted war criminal.

Fenner burned Rosenfeld’s message, reminding himself wryly that he was behaving in the very best tradition. This was a game not too difficult to learn, he thought. A game? A game in deadly earnest. A vacation in Venice that was grim business. A girl constantly beside him who wasn’t his. How the hell had he walked into this upside-down world? Where, he wondered suddenly, would Venice lead?

Just another routine overseas assignment. That’s what successful young New York architect Ken Strang thought when a national travel magazine sent him to Europe to sketch Greek ruins. What he did not know, until it was too late, was that from the moment he boarded the ship, he had become the pawn in a murderous game of international intrigue. To Strang, danger was no object. He could take care of himself, but he had reckoned without Cecilia, his beautiful photographer. When he fell in love with her, he gave his enemies the one weapon they needed.

A phone call prompts Bill Lammiter, a young American playwright, to follow a former girlfriend to Rome. There, Lammiter saves a mysterious Italian girl from a beating and the fat is in the fire. A kidnapping, a battle in a Renaissance villa, a shrewd gamekeeper, a chance snapshot and a touring preppy contribute to the excitement and suspense of this Cold War thriller.

English girl Sheila Matthews accepts an invitation to holiday in Poland, the country where her father died in mysterious circumstances. When German bombers begin pounding Warsaw, she decides against returning home and is recruited by the Polish underground. Playing a dangerous game as a double agent, Sheila must use all her skill to stay one step ahead of the Gestapo. But soon the Germans begin to suspect her and she flees to the forest, to be reunited with the enigmatic Captain Adam Wisniewski, now a wanted partisan.

Richard and Frances Myles are preparing for their annual European summer vacation in 1939 when they are visited at their Oxford college by old friend Peter Galt, who has a seemingly simple job for them. But in the heightened atmosphere of prewar Europe, nobody is above suspicion. In fact, the husband and wife are being carefully monitored by shadowy figures.

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.

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.

Ian Rutledge returns to his career at Scotland Yard after years fighting in the First World War. Unknown to his colleagues he is still suffering from shell shock, and is burdened with the guilt of having had executed a young soldier on the battlefield for refusing to fight. A jealous colleague has learned of his secret and has managed to have Rutledge assigned to a difficult case which could spell disaster for Rutledge whatever the outcome. A retired officer has been murdered, and Rutledge goes to investigate.