"A master of disinformation, assassination and the penetration of governments, Colonel Zaliatev presented the biggest threat that British Intelligence had encountered during the Cold War. The deadly cat and mouse games that the Colonel played in London led MI5 to call in Gus Benedict, one of their most experienced former intelligence officers, a man who was capable of engaging with the formidable KGB master strategist as an equal. The late 1950s were a perilous period in the Cold War and Zaliatev was one of its most dangerous people."