Richard Sorge was one of the greatest spies of all times. For 8 years he orchestrated a top-level Soviet operation in Tokyo, literally operating out of the German Embassy. He was a close confidant of Ambassador Ott, his top Japanese source Hotsumi Ozaki was a member of elite Japanese think-tanks and part of a weekly breakfast with the Prime Minister. Sorge and Ozaki both pursued their covers with dedicate, maintaining a reputation as insightful journalists. Sorge's information may have provided warnings of Operation Barbarossa, and reassurances that Japan would not attack Siberia while the USSR was occupied by Germany. The unwinding of the spy ring, and the slow march to execution, is also tragic.

This book is a nearly month by month account of the Sorge ring, and the man himself. Sorge was brilliant, an alcoholic, a womanizer, a scandalous loudmouth beloved of the German expat community in Tokyo, and a charismatic man who inspired loyalty even in those he betrayed. The workings of his relationships with his mistress Hanako, radioman Max Clausen, and with the distant 4th Directorate in Moscow, swirl around the tensions and secrets of his life. Prange is a dedicated and detailed historian, and this is a fascinating subject, but somehow this book was a slog, a real life spy story of narrow escapes and information that disappeared into the void of the Soviet strategic apparatus.