Secret service Intelligence service 5 World War, 1939-1945 5 History 4 Fiction 3 Espionage 2 Foreign relations 2 Soviet Union 2 World War, 1914-1918 2 Espionage, German 1 Fascists 1 Military intelligence 1 Neutrality 1 Participation, Female 1 Politics and government 1 Russia 1 Spies 1 Spy stories 1 Spy stories, English 1 Subversive activities 1 Underground movements 1 Women 1 Women spies 1