- Spies[remove]22
- Espionage11
- Espionage, Soviet7
- Defectors3
- Intelligence service3
- Espionage, British2
- Art historians1
- Blunt, Anthony, 1907-19831
- Communism1
- Dansey, Claude Edward Marjoribanks, Sir, 1876-19471
- Espionage, Czechoslovak1
- Gast, Gabriele, 1943-1
- Gay men1
- Germany. Bundesnachrichtendienst1
- Hambleton, Hugh1
- Intelligence officers1
- Philby, Kim, 1912-1
- Soviet Union. Komitet gosudarstvennoi bezopasnosti1
- Trials (Espionage)1
- Trials (Political crimes and offenses)1