Spy Web

Berlin has always been a hotbed of espionage. Uncover the secrets under the Kaiser, during the tyranny that was Hitler's Third Reich, and throughout the long Cold War that followed the destruction of the Nazi empire by the Allies.

An unprepossessing Victorian Mansion 50 miles north of London, Bletchley Park started life as Station X before developing into the most potent deciphering center of World War II when the German Enigma codes were cracked by its staff.

Established by President Truman, the CIA became a global agency for collecting and evaluating intelligence through covert action. It has a fascinating history throughout the post-war world to the modern day.

The fascinating story of 20th-century efforts by all sides to break down the enemy's signals security, to protect the sender's signals, and penetrate the enemy's secret communications. Many battles in the last 100 years have been won or lost because one side or the other could read its opponent's intercepted messages. From the famous Zimmerman Telegram in April 1917 through to the breaking of the Japanese Purple codes and the more recent Russian codes, trace the history of code breaking.

The FBI serves as a national police force investigating interstate crime. However, it also handles violations of U.S espionage laws by foreign agents. Probe the department's entire history, including the G-man era, interception of Nazi agents, communist-hunting in the 1950s, the search for subversives, and its role in the post-Cold War world.

Born in the crucible of Israel's war of independence and honed in the constant struggle for survival, the Mossad gained a fearsome reputation for ruthlessness. Whether tracking down criminals like Adolf Eichmann or eliminating terrorists like the Palestinian Black September movement, discover how Mossad allowed nothing to stand in its way.

During both World Wars, Britain's counter-espionage service proved highly effective - no enemy spies operated for more than a few days, and many were "turned" to send false intelligence back home. Later, MI5 faced criticism for failing to expose the Cambridge spies, then remodelled itself as a counter-terrorist organisation.

Britain's Secret Intelligence Service, and employer of the fictional James Bond, grew out of the need to combat imperial German and later Bolshevik ambitions in the early part of the 20th Century. Uncover the secret workings of MI6, and see how its spectacular successes, like breaking the Enigma code, were offset by devastating failures such as the inability to detect superspy Kim Philby.

This episode focuses on the Komitet Gosudarstvennoe Bezopasnosti (Committee for State Security), the agency of the former Soviet Union responsible for state security from 1954 to 1991. KGB functions included counterespionage, foreign intelligence collection and analysis, protection of land and maritime borders, control of nuclear weapons, and the Kremlin's guards.

One of the Soviet Union's greatest espionage operations ended in 1951 when two diplomats at the British Foreign Office fled from Southampton Dock. Uncover the story of one of the most effective spy rings of all time as they passed along military, scientific, and political secrets that caused incalculable harm to British and American interests.