Leslie James Bennett (1920 — October 18, 2003) was a British/Canadian citizen who spent most of his working life as a counter-intelligence official, first for Britain's GCHQ, and later for the Royal Canadian Mounted Police (RCMP) Security Service.
According to the Encyclopedia of Cold War Espionage, Spies, and Secret Operations in 1962 the Central Intelligence Agency's chief of counter-intelligence James Jesus Angleton trusted Bennett to interview a key Soviet defector Anatol Golitsyn.
The investigation did not find any evidence that Bennett was a double agent, but his clearance to have access to top secret information was withdrawn, to satisfy American concerns.
According to the Encyclopedia of Cold War Espionage, Spies, and Secret Operations, when Angleton was removed in 1974, it turned out he never had any real evidence Bennett had ever been disloyal.
In 1977 Ian Adams published a short novel entitled S: Portrait of a Spy, about a senior RCMP security official who was a mole.
[1][2] During the civil suit the judge required Adams to name his sources, but allowed Bennett to refuse to testify on the grounds that doing so might reveal secrets that would put national security at risk.