Another Russian Mole at CIA?

Secret mole-hunting unit fingered top CIA official as a Kremlin spy, new book alleges

In the 1950s, the British intelligence community and the British press were riveted on the subject of espionage. Two diplomats, Guy Burgess and Donald Maclean, had defected to Moscow and it was clear that they had spied for the Soviets from within the heart of Britain’s national security establishment. But was there a “Third Man”?  Suspicion soon center…