The extent of Soviet espionage in the United States during World War II was not fully realized by the FBI until the courier for the group, [[Elizabeth Bentley]], who ferried information from Washington, D.C. to her New York KGB contacts, defected in the fall of 1945. By December, no fewer that 227 FBI agents were involved in the case. | The extent of Soviet espionage in the United States during World War II was not fully realized by the FBI until the courier for the group, [[Elizabeth Bentley]], who ferried information from Washington, D.C. to her New York KGB contacts, defected in the fall of 1945. By December, no fewer that 227 FBI agents were involved in the case. |