Who was Kim Philby? Those closest to him—like his fellow MI6 officer and best friend since childhood, Nicholas Elliot, and the CIA’s head of counterintelligence, James Jesus Angleton—knew him as a loyal confidant and an unshakeable patriot. Philby was a brilliant and charming man who rose to head Britain’s counterintelligence against the Soviet Union. Together with Elliott and Angleton he stood on the front lines of the Cold War, holding Communism at bay. But he was secretly betraying them both: He was working for the Russians the entire time.

Circle of Treason is the first account written by CIA agents who were key members of the CIA team that conducted the intense "Ames Mole Hunt." Sandra Grimes and Jeanne Vertefeuille were two of the five principals of the CIA team tasked with hunting one of their own and were directly responsible for identifying Ames as the mole, leading to his arrest and conviction.

Cambridge spy Guy Burgess was a supreme networker. He also set a gold standard for conflicts of interest, working variously for the BBC, MI5, MI6, the War Office, the Ministry of Information and the KGB. Yet Burgess was never challenged by Britain's spy catchers: his superiors were convinced he was too much of a liability to have been recruited by Moscow. Now, with a major new release of hundreds of files into the National Archives, Purvis and Hulbert reveal just how this charming establishment insider was able to fool everyone for so long.

A legal analyst for NPR, NBC, and CNN, delves into the facts surrounding what has been called the “worst intelligence disaster in US history”: the case of Robert Hanssen—a Russian spy who was embedded in the FBI for two decades.

Guy Burgess was the most important, complex, and fascinating of "The Cambridge Spies" - Maclean, Philby, Blunt - brilliant young men recruited in the 1930s to betray their country to the Soviet Union. An engaging and charming companion to many, an unappealing, utterly ruthless manipulator to others, Burgess rose through academia, the BBC, the Foreign Office, MI5 and MI6, gaining access to thousands of highly sensitive secret documents which he passed to his Russian handlers.

In the aftermath of the Cold War, American intelligence caught three high-profile Russian spies: Aldrich Ames, Edward Lee Howard, and Robert Hanssen. However, rumors have long swirled of another mole, one perhaps more damaging than all the others combined. Perhaps the greatest traitor in American history, perhaps a Russian ruse to tear the CIA apart, or perhaps nothing more than a bogeyman, he is often referred to as the Fourth Man.

Britain's Special Air Service - or SAS - was the brainchild of David Stirling, a young, gadabout aristocrat whose aimlessness in early life belied a remarkable strategic mind. Where most of his colleagues looked at a battlefield map of World War II's African theater and saw a protracted struggle with Rommel's desert forces, Stirling saw an opportunity: Given a small number of elite, well-trained men, he could parachute behind enemy lines and sabotage their airplanes and war matériel.

In The Ghost, investigative reporter Jefferson Morley tells Angleton's dramatic story, from his friendship with the poet Ezra Pound through the underground gay milieu of mid-century Washington to the Kennedy assassination to the Watergate scandal. From the agency's MKULTRA mind-control experiments to the wars of the Mideast, Angleton wielded far more power than anyone knew.

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.

If anyone could be considered a Russian counterpart to the infamous British double-agent Kim Philby, it was Oleg Gordievsky. The son of two KGB agents and the product of the best Soviet institutions, the savvy, sophisticated Gordievsky grew to see his nation's communism as both criminal and philistine. He took his first posting for Russian intelligence in 1968 and eventually became the Soviet Union's top man in London, but from 1973 on he was secretly working for MI6.

In 1942, in a quiet village in the leafy English Cotswolds, a thin, elegant woman lived in a small cottage with her three children and her husband, who worked as a machinist nearby. Ursula Burton was friendly but reserved, and spoke English with a slight foreign accent. By all accounts, she seemed to be living a simple, unassuming life. Her neighbors in the village knew little about her. They didn’t know that she was a high-ranking Soviet intelligence officer. They didn’t know that her husband was also a spy, or that she was running powerful agents across Europe.

Spies is the history of the secret war that Russia and the West have been waging for a century. Espionage, sabotage, and subversion were the Kremlin’s means to equalize the imbalance of resources between the East and West before, during, and after the Cold War. There was nothing “unprecedented” about Russian meddling in the 2016 US presidential election. It was simply business as usual, new means used for old ends.

The Talmud says: “If someone comes to kill you, rise up and kill him first.” This instinct to take every measure, even the most aggressive, to defend the Jewish people is hardwired into Israel’s DNA. From the very beginning of its statehood in 1948, protecting the nation from harm has been the responsibility of its intelligence community and armed services, and there is one weapon in their vast arsenal that they have relied upon to thwart the most serious threats: Targeted assassinations have been used countless times, on enemies large and small....

J. Robert Oppenheimer was one of the iconic figures of the 20th century, a brilliant physicist who led the effort to build the atomic bomb but later confronted the moral consequences of scientific progress. When he proposed international controls over atomic materials, opposed the development of the hydrogen bomb, and criticized plans for a nuclear war, his ideas were anathema to powerful advocates of a massive nuclear buildup during the anti-Communist hysteria of the early 1950s.

After the assassination of his wife and son, Gabriel Allon retires from his brutal anti-terrorist career and loses himself in his previous cover job: art restoration. But when Tariq al-Hourani, the Palestinian terrorist responsible for his family’s death, begins a killing spree designed to destroy Middle East peace talks, Gabriel once again slips into the shadowy world of international intrigue. In a global game of hide-and-seek, the motives of Gabriel and Tariq soon become more personal than political.

The fascinating, improbable true story of Maxwell Knight - the great MI5 spymaster and inspiration for the James Bond character M. Maxwell Knight was perhaps the greatest spymaster in history. He did more than anyone in his era to combat the rising threat of fascism in Britain during World War II, in spite of his own history inside this movement. He was also truly eccentric - a thrice-married jazz aficionado who kept a menagerie of exotic pets - and almost totally unqualified for espionage. Yet he had a gift for turning practically anyone into a fearless secret agent.

Richard Sorge was dispatched to Tokyo in 1933 to serve the spymasters of Moscow. For eight years, he masqueraded as a Nazi journalist and burrowed deep into the German embassy, digging for the secrets of Hitler's invasion of Russia and the Japanese plans for the East. In a nation obsessed with rooting out moles, he kept a high profile - boozing, womanizing, and operating entirely under his own name.

Bletchley Park looked like any other sprawling country estate. In reality, however, it was the top-secret headquarters of Britain’s Government Code and Cypher School - and the site where Germany’s legendary Enigma code was finally cracked. There, the nation’s most brilliant mathematical minds - including Alan Turing, whose discoveries at Bletchley would fuel the birth of modern computing - toiled alongside debutantes, factory workers, and students on projects of international importance. Until now, little has been revealed about ordinary life at this extraordinary facility.

From the dark days of World War II through the Cold War, Sergey A. Kondrashev was a major player in Russia’s notorious KGB espionage apparatus. Rising through its ranks through hard work and keen understanding of how the spy and political games are played, he “handled” American and British defectors, recruited Western operatives as double agents, served as a ranking officer at the East Berlin and Vienna KGB bureaus, and tackled special assignments from the Kremlin.

A work of remarkable scholarship that moves with the swift pace of a John le Carre thriller, A Spy at the Heart of the Third Reich is a chilling addition to the literature of espionage. In 1943, a young official named Fritz Kolbe from the German foreign ministry arranged to meet with Allen Dulles, then an OSS officer in Switzerland and later the director of the Central Intelligence Agency.

From Berlin to the Congo, from Moscow to the back streets of London, these are the stories of the agents on the front lines of British intelligence. And the truth is often more remarkable than fiction.

MI6 has been cloaked in secrecy and shrouded in myth since it was created a hundred years ago. Our understanding of what it is to be a spy has been largely defined by the fictional worlds of Ian Fleming and John le Carré. Gordon Corera provides a unique and unprecedented insight into this secret world and the reality that lies behind the fiction.

Prior to the U.S. entering WWII, a small coterie of British spies in Washington, D.C., was formed. They called themselves the Baker Street Irregulars after the band of street urchins who were the eyes and ears of Sherlock Holmes in some Arthur Conan Doyle stories.

The Skripal Files is a remarkable and definitive account of Sergei Skripal’s story, which lays bare the new spy war between Russia and the West. Mark Urban, the diplomatic and defense editor for the BBC, met with Skripal in the months before his poisoning, learning about his career in Russian military intelligence, how he became a British agent, his imprisonment in Russia, and the events that led to his release. Skripal’s first-hand accounts and experiences reveal the high stakes of a new spy game that harks back to the chilliest days of the Cold War.

If anyone could be considered a Russian counterpart to the infamous British double-agent Kim Philby, it was Oleg Gordievsky. The son of two KGB agents and the product of the best Soviet institutions, the savvy, sophisticated Gordievsky grew to see his nation's communism as both criminal and philistine. He took his first posting for Russian intelligence in 1968 and eventually became the Soviet Union's top man in London, but from 1973 on he was secretly working for MI6.

An intimate friend of Adolf Hitler’s who turned against him during the Nazi rise to power delves into the character of one of history’s most evil dictators. Of American and German parentage, Ernst Hanfstaengl graduated from Harvard and ran the family business in New York for a dozen years before returning to Germany in 1921. By chance he heard a then little-known Adolf Hitler speaking in a Munich beer hall and, mesmerized by his extraordinary oratorical power, was convinced the man would some day come to power. As Hitler’s fanatical theories and ideas hardened, however, he surrounded himself with rabid extremists...

This is the secret and suspenseful account of how OSS spymaster Allen Dulles led a network of Germans conspiring to assassinate Hitler and negotiate surrender to bring about the end of World War II before the Soviet's advance. Agent 110 is Allen Dulles, a newly minted spy from an eminent family. Dulles met with and facilitated the plots of Germans who were trying to destroy the country's leadership.

James Bond has nothing on Dusko Popov. A double agent for the Abwehr, MI5 and MI6, and the FBI during World War II, Popov seduced numerous women, spoke five languages, and was a crack shot, all while maintaining his cover as a Yugoslavian diplomat....

During the German occupation of Rome from 1942-1944, Irishman Monsignor Hugh O’Flaherty ran an escape organization for Allied POWs and civilians, including Jews. Safe within the Vatican state, he regularly ventured out in disguise to continue his mission, which earned him the nickname 'The Pimpernel of the Vatican'. When the Allies entered Rome, he and his collaborators - priests, nuns, and laypeople of numerous nationalities and religious beliefs - had saved the lives of over 6,500 people.

As the son-in-law of Egyptian president Gamal Abdel Nasser and a close advisor to his successor, Anwar Sadat, Ashraf Marwan had access to the deepest secrets of the country's government. But he himself had a secret: he was a spy for the Mossad, Israel's intelligence service. Under the codename "The Angel", Marwan turned Egypt into an open book for the Israeli intelligence services and, by alerting the Mossad in advance of the joint Egyptian-Syrian attack on Yom Kippur, saved Israel from a devastating defeat.

The murder of the Romanov family in July 1918 horrified the world, and its aftershocks still reverberate today. In Putin's autocratic Russia, the Revolution itself is considered a crime, and its anniversary was largely ignored. In stark contrast, the centenary of the massacre of the imperial family will be commemorated in 2018 by a huge ceremony to be attended by the Patriarch of the Russian Orthodox Church. While the murder itself has received major attention, what has never been investigated in detail are the various plots behind the scenes to save the family.