During World War II, German intelligence spread its tentacles across the globe, operating throughout occupied and neu...

Berlin has always been a hotbed of espionage. Uncover the secrets under the Kaiser, during the tyranny that was Hitle...

An unprepossessing Victorian Mansion 50 miles north of London, Bletchley Park started life as Station X before develo...

Established by President Truman, the CIA became a global agency for collecting and evaluating intelligence through co...

The fascinating story of 20th-century efforts by all sides to break down the enemy's signals security, to protect the...

The FBI serves as a national police force investigating interstate crime. However, it also handles violations of U.S ...

Born in the crucible of Israel's war of independence and honed in the constant struggle for survival, the Mossad gain...

During both World Wars, Britain's counter-espionage service proved highly effective - no enemy spies operated for mor...

Britain's Secret Intelligence Service, and employer of the fictional James Bond, grew out of the need to combat imper...

This episode focuses on the Komitet Gosudarstvennoe Bezopasnosti (Committee for State Security), the agency of the fo...

One of the Soviet Union's greatest espionage operations ended in 1951 when two diplomats at the British Foreign Offic...

Britain's secret wartime Special Operation Executive was responsible for recruiting and training hundreds of secret a...

Take a look at America's Office of Strategic Services, which was modelled on the British Special Operation Executive....

In one of the deadliest and most difficult conflicts the world had ever witnessed, straightforward warfare was not en...

Mata Hari, Sidney Reilly, Lawrence of Arabia, Cicero, Lonsdale, the Lucy Spy Ring: these are just a few of the most d...

The balloon first gave mankind the ability to look down on the battlefield; then came ever more sophisticated aircraf...

During World War II, the Soviet government operated a large spy ring that sought atomic secrets in Great Britain, Can...

The Cheka was the infamous Bolshevik organisation which took control of Russia as Lenin's feared secret police. It wa...

Aircraft were first used to drop agents behind enemy lines during World War I. The skills of the first pioneers were ...

This organisation traces its roots back to 1776 and the spying service set up by George Washington. Since then the se...

From its early beginnings with General John J Pershing and his Mexican expedition of 1916, the US Air Intelligence ar...

Sometimes referred to as the 'Fourth Department, Russian military intelligence', it was created in 1918 and produced ...

Throughout the Twentieth Century, in all the major conflicts, both sides have operated intelligence collection ships....

Japan's traditional fascination with the West led at the beginning of the 20th century to the foundation of an elabor...

At the beginning of the 20th century, the French had a sophisticated intelligence network active during World War I, ...

The US's longest surviving intelligence service was created in 1882. One of its most prominent divisions was the Amer...