Chalmers Ashby Johnson was an American author and professor emeritus of the University of California, San Diego. He fought in the Korean war, from 1967-1973 was a consultant for the CIA, and ran the Center for Chinese Studies at the University of California, Berkeley for years. He was also president and co-founder of the Japan Policy Research Institute, an organization promoting public education about Japan and Asia.
PROS: A fascinating story that opened my eyes to the political climate in Japan in the years leading up to WWII. Ozaki left behind many writings, allowing Johnson to really get into the head of the man and understand his beliefs and motives.
CONS: It takes about 2/3 of the book to get into the actual story of the espionage team Ozaki was a part of.