London: Heinemann, 1965. First Edition. 246pp. Hardcover: NEAR FINE. Dust Wrapper: NEAR FINE. Name written in pen on front pastedown; price-clipped wrapper has modest color loss on spine. SIGNED by the author. The author’s fourth espionage spy novel about a British Intelligence agency known as 'The Department' and its attempts to infiltrate an agent into East Germany. Follow-up to 'The Spy Who Came in From the Cold' and basis for the 1970 spy thriller starring Ralph Richardson, Christopher Jones and Anthony Hopkins.