History 24 Intelligence officers 16 Americans 11 World War, 1939-1945 10 Secret service 9 Women spies 9 British 8 mer ... Intelligence service 6 Cold War 4 Journalists 4 Murder 4 Terrorism 4 Undercover operations 4 Illegal arms transfers 3 Investigation 3 Officials and employees 3 Underground movements 3 War on Terrorism, 2001-2009 3 African American women 2 College teachers 2 Conspiracies 2 Courts and courtiers 2 Diplomats 2 Family secrets 2 Jews 2 Missing persons 2 Orphans 2 Philanthropists 2 Prevention 2 Revenge 2 mindre ...