cares to about the secret world, and defend it against large quantities of hostile evidence by the simple expedient of retreating behind further and further screens of postulated inward mystery. Secret services have in common with Freemasons and mafiosi that they inhabit an intellectual twilight-a kind of ambiguous gloom in which it is hard to distinguish with certainty between the menacing and the merely ludicrous. In such circumstances the human affinity for myth and legend easily gets out of control". This inability to know for certain about what is being going on in the "secret world" of intelligence-gathering affected both non-fiction and fiction books about espionage. The Cold War and the struggle between Soviet intelligence-known as the KGB from 1954 onward-vs. the CIA and MI6 made the subject of espionage a popular one for novelists to write about. Most of the spy novels of the Cold War were really action thrillers with little resemblance to the actual work of spies. The writer Malcolm Muggeridge who had worked as a spy in World War Two commented that thriller writers in the Cold War took to writing about espionage "as easily as the mentally unstable become psychiatrists or the impotent pornographers". The city that was considered to be the "capital of the Cold War" was Berlin, owing to its post-war status as the city was divided between the two German states while Britain, France, the Soviet Union and the United States all had occupations zones in Berlin. As a result, Berlin was a beehive of espionage during the Cold War with the city full of American, British, East German, French, Soviet and West German spies; it was estimated that there was an average of about 8, 000 spies in Berlin at any given moment during the Cold War. Because Berlin was a center of espionage, the city was frequently a settling for spy novels and films. Furthermore, the construction of the Berlin Wall in 1961 made the wall into a symbol of Communist tyranny, which further increased the attraction for Western writers of settling a Cold War spy novel in Berlin. Perhaps the most memorable story set in Berlin was The Spy Who Came In From The Cold which in both the novel and the film ended with disillusioned British spy Alec Leamas and his lover, the naïve young woman Liz Gold being shot down while trying to cross the Berlin Wall