Hidden for decades in the Security Service archives, a 1927 designation of Yacob Jilinsky as a principal Soviet official exposes the infrastructure used to fund communist subversion
A Soviet turbojet engine captured in Berlin provided a window into Moscow's reach, but the strategic consequences of that find were scrubbed from the record before the files reached the archive.
A courier who bridged the gap between a physicist's betrayal and Moscow's archives spent 15 years in prison after a record kept secret for decades mapped the route of atomic leaks.
A Quaker relief worker's role as a conduit for the Soviet atomic spy remained buried in a file labeled 'Pacifists' for decades, masking a network that stretched from Berlin to Los Alamos.
Kept in the files of the UK Security Service, the record of a man who supervised Soviet espionage in the US capital for twenty years remains partially stripped of its most sensitive names.
A man of six aliases spent decades selling state secrets to a revolving door of empires, yet the British Security Service kept his operational history a skeletal secret.
An officer of Soviet Intelligence survived arrests in two European nations only to operate in the United States, a career trajectory kept in a personal file for decades.
The identity of the man who facilitated the theft of nuclear calculations in 1946 was matched to a dossier in 1950, but the source of that identification remains redacted.
Soviet directives for an espionage network in the United States were seized from a New York address in 1927, though the fate of the man who held them was erased from the record.
A German doctor used a journalist's alias to navigate the Comintern's hidden networks while the Security Service tracked his "possible" ties to Soviet intelligence.
He operated as a trade agent while funneling military hardware to Moscow, a role buried in the Security Service's personal files and likely ending in a Soviet purge.
A schoolteacher’s militant activity in Birmingham and London remained a focal point of Security Service surveillance for years, with links to atomic espionage hidden in the archive's numbering
A woman with four identities spent years navigating the London social scene, masking a link between the BBC's Russian section and the Soviet spy who stole the atomic secret.
Kept in the files of the British Security Service, the link between a Hohenzollern prince and a Soviet talent spotter was dismissed as "eccentric" while atomic secrets leaked to Moscow.
For three decades, a woman with eight identities moved through refugee trusts and publishing houses to serve the Soviet center; her handlers and the specifics of her espionage remain blacked out.
The Soviet Union's attempt to buy British military secrets from a London Serbian ended in a tabloid scandal that exposed a regional intelligence chief in Amsterdam.