Richard Sakakida
Richard Motoso Sakakida (November 19, 1920 – January 23, 1996) was a United States Army intelligence agent stationed in the Philippines at the outbreak of World War II. He was captured and tortured fo...
Jan Valtin
Jan Valtin was the alias of Richard Julius Hermann Krebs (December 17, 1905 - January 1, 1951), a German writer during the interwar period. He settled to the United States in 1938, and in 1940 (as Val...
Jan Valtin - Wikipedia
Vincent Fovargue
Vincent Patrick Fovargue (1901–1921) was a company officer in the Dublin Brigade of the IRA during the Irish War of Independence. After his capture, Fovargue was recruited as an informant by the Briti...
Erich Mielke
Erich Fritz Emil Mielke (December 28, 1907 – May 21, 2000) was a German secret police official in the service of the Soviet Union and East Germany.After being one of two triggermen in the 1931 murder ...
Erich Mielke - Wikipedia
David Neligan
David Neligan (1899–1983), known by his soubriquet "The Spy in the Castle", was an important figure involved in the Irish War of Independence (1919–21) and subsequently became Director of Intelligence...
Liam Tobin
Major General Liam Tobin (born William Joseph Tobin; 1895 - 30 April 1963) was an officer in the Irish Army and the instigator of an Army Mutiny in March 1924. During the Irish War of Independence, he...
Liam Tobin - Wikipedia
Sidney Reilly
Lieutenant Sidney George Reilly, MC (c. 24 March 1873 – 5 November 1925), famously known as the Ace of Spies, was a Jewish Russian-born adventurer and secret agent employed by Scotland Yard, the Briti...
Sidney Reilly - Wikipedia
Ernest Holloway Oldham
Ernest Holloway Oldham (September 10, 1894 – September 29, 1933) was a cipher clerk in the British Foreign Office who spied for the Soviet Union between 1929 and his death in 1933, in return for money...
Ernest Holloway Oldham - Wikipedia
The Squad (Irish Republican Army unit)
The Squad or the Twelve Apostles was an Irish Republican Army (IRA) unit founded by Michael Collins to counter British intelligence efforts during the Irish War of Independence, mainly by means of ass...
The Squad (Irish Republican Army unit) - Wikipedia
Hans-Thilo Schmidt
Hans-Thilo Schmidt (13 May 1888 – 19 September 1943) codenamed Asché or Source D, was a spy who, during the 1930s, sold secrets about the Germans' Enigma machine to the French. The materials he provid...
Hans-Thilo Schmidt - Wikipedia
Hugh Sinclair
Admiral Sir Hugh Francis Paget Sinclair, KCB (18 August 1873 – 4 November 1939), nicknamed "Quex", was a British intelligence officer. Between 1919 and 1921, he was Director of British Naval Intellige...
Yakov Blumkin
Yakov Grigoryevich Blumkin (Russian: Яков Григорьевич Блюмкин, Ukrainian: Яків Григорович Блюмкін; 1898 – 3 November 1929) was a Left Socialist-Revolutionary, assassin, Bolshevik and an a...
Yakov Blumkin - Wikipedia
Harry Thompson (spy)
Harry Thomas Thompson (born 1908) was a former United States Navy yeoman who spied for Japan against the United States in 1934–35. He was the first American to be convicted of espionage since Wo...
Ernst Wollweber
Ernst Friedrich Wollweber (29 October 1898 – 3 May 1967) was Minister of State Security of the German Democratic Republic from 1953 to 1957.
Born in Hann. Münden, Province of Hanover in 1898...
Ernst Wollweber - Wikipedia
Thomas Gay
Colonel Thomas Gay (22 January 1884 – 2 January 1953) was an intelligence officer on the staff of General Michael Collins from 1918 – 1922. His home on Haddon Road in Clontarf was a regular meeting pl...
F. Digby Hardy
John Henry Gooding, alias Frank Digby Hardy (5 April 1868 – 28 October 1930) was an English naval writer, journalist, soldier, career criminal and would-be spy during the Irish War of Independence. Bo...
F. Digby Hardy - Wikipedia
John Semer Farnsworth
John Semer Farnsworth (August 13, 1893 – November 10, 1952) was a former United States Navy officer who was convicted of spying for Japan during the 1930s. He was identified as Agent K in radio ...
John Semer Farnsworth - Wikipedia
Hugh Montgomery (Royal Marines officer)
Lieutenant Colonel Hugh Ferguson Montgomery CMG, DSO (6 May 1880 – 10 December 1920) was a British first-class cricketer and Royal Marine Light Infantry officer. Montgomery was born in India and was a...
Liam Forde
Liam Forde was an alias used by Séamas Ó Maoiléoin (aka James Malone) (1891 - 1958) of Tyrrellspass, County Westmeath, Ireland when working as a spy for Michael Collins. His brother, Thomas, a soldier...
Eamon Broy
Colonel Eamon "Ned" Broy (also called Edward Broy; 1887–1972) was successively a member of the Dublin Metropolitan Police, the Irish Republican Army, the National Army, and the Garda Síochána of the I...
Assassination of Paul Anlauf and Franz Lenck
The Murders of Paul Anlauf and Franz Lenck were a double homicide that took place in Berlin in 1931, when police captains Paul Anlauf and Franz Lenck were assassinated by members of the Communist Part...
Assassination of Paul Anlauf and Franz Lenck - Wikipedia
St John Philby
Harry St John Bridger Philby CIE (3 April 1885 – 30 September 1960), also known as Jack Philby or Sheikh Abdullah (الشيخ عبدالله), was a British Arabist, explorer, writer, and colonial office intellig...
St John Philby - Wikipedia
John Herbert King
John Herbert King, alias 'MAG', was a British Foreign Office cypher clerk who provided Foreign Office communications to the Soviet Union between 1935 and 1937. He was sentenced to 10 years in prison a...
Gertrude Bell
Gertrude Margaret Lowthian Bell, CBE (14 July 1868 – 12 July 1926) was an English writer, traveller, political officer, administrator, archaeologist and spy who explored, mapped, and became highl...
Gertrude Bell - Wikipedia