By Richard Deacon. A researched explanation of a man who set up spy networks in Germany and the Soviet Union prior to WW2. He was a private citizen. For myself, it filled in my gaps in knowledge about Andrei Zhdanov, Stalin's apparent successor in waiting and who was one of the Leningrad group liquidated by Stalin. The "super spy" spoke 5 languages. His story was as fascinating as that of an American professional baseball player who was a major US spy in WW2, Mo Berg. (Mo Berg was not a dummy. He would read 7 papers a day. Knew physics and was used in Europe).