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 German refugee and mathematician was cast into the orbit of the Soviet atomic spy Klaus Fuchs, leaving a trail of surveillance that ended in a suspicious archival silence
The Security Service files on Hildegarde Nunn May reveal a woman with four identities and a strategic marriage to an atom spy, hidden behind the facade of a local clinic
Seven aliases masked a Soviet intelligence hub in the heart of the UK, providing the vital communication channel for the atom spy Klaus Fuchs while MI5 looked the other way.
A British citizen lost his nationality after providing damaging nuclear data to the KGB and GRU, though the investigation that caught him produced no physical evidence of espionage.
A Soviet operative infiltrated the Manhattan Project and escaped arrest in 1945, leaving the American nuclear monopoly shattered and the Cold War balance shifted.
A physicist volunteered his secrets to the KGB and GRU, compromising the West's nuclear edge for seven years before a sensitive US source ended his run.
He traded the West's nuclear advantage for Soviet interests, a betrayal that stayed hidden until a sensitive American source pointed the finger in 1950.
A physicist's choice to feed atomic secrets to Soviet agents remained hidden for years, with a conviction that ultimately rested on a confession because investigators found no other evidence.
A physicist’s secret life as a Soviet asset remained hidden until a sensitive American source broke the case, though the British investigation found no physical proof of his spying.
A physicist who volunteered for the Soviets lived a double life for eight years, only to be convicted on a confession because investigators found nothing else.