The highest paid spy in American history managed to pass polygraphs and keep under the radar, even though the CIA suspected an in-house mole. He lied, repeatedly, with an absolutely icy calm.

Aldrich “Rick” Ames became wealthy selling secrets to the Soviet Union from 1985 to his arrest on February 21, 1994. He received $2.5 million from the Soviet KGB and had another $2.1 million reserved for him in a Russian bank.

Many secret agents were betrayed and arrested due to Ames’ espionage. Some of them were executed. He serves a life sentence in federal prison without parole.

https://www.fbi.gov/history/famous-cases/aldrich-ames