James Armistead was an enslaved African American, best known for his work as a spy during the American Revolution.
Giovanni Giacomo Casanova, an 18th Century figure, is known for his archetypal reputation as a seducer of women.
Anna Chapman became famous in June 2010, when she was arrested in New York and accused of spying for the Russian government.
Nathan Hale graduated from Yale University in 1773, joined the American Revolution and was hanged by the British for espionage in 1776.
Mata Hari was a professional dancer and mistress who became a spy for France during World War I. Suspected of being a double agent, she was executed in 1917.
E. Howard Hunt was a CIA agent and PR consultant before he teamed up with G. Gordon Liddy to organize the Watergate break-in.
T. E. Lawrence was a British Army officer during the Arab Revolt against Ottoman Turkish rule. He became known as Lawrence of Arabia, based on the 1962 film.
Ethel Rosenberg and husband Julius Rosenberg were convicted of conspiracy to commit espionage in 1951. They were both executed by the U.S. government in 1953.
Julius Rosenberg became an infamous figure in American history when he was convicted, along with his wife, Ethel Rosenberg, of giving military secrets to the Soviet Union in the early 1950s.