8 administrative zone of China, whose national security apparatus is ultimately controlled by Beying. Making the possibility of questioning him even more remote, he next went to Russia, a country which has no extradition treaty with the United States. And Russia granted him asylum. His escape left in its wake an incredibly-important unsolved mystery: how did a young analyst at the NSA succeeded in penetrating all the layers of NSA security to pull off the largest theft of secret documents in the history of American intelligence? Did he act alone? What happened to documents? Was his arrival in Russia part of the plan? As I had written several books on the vulnerability of intelligence services, this was a mystery-- a "how-dunnit" if you like-- that immediately intrigued me. After all, even if the perpetrator had acted for the most salutary of reasons, the unauthorized transfer of state secrets to another country is, by any definition, a form of espionage. I decided to begin my investigation of this case in Hong Kong because it was the place to which Snowden first fled after leaving Hawaii. Snowden had planned the trip for at least 4 weeks, according to the travel plan he had filed at the NSA, I assumed he had a good reason for going first to Hong Kong. But when I spoke to my sources in the intelligence community, they could not explain Snowden’s choice of this semi-autonomous zone in China as his initial destination. It would not protect him from the reach of US law since Hong Kong had an active extradition treaty with the United States. Just a few months earlier, Hong Kong had made headlines by extraditing Trent Martin, a fugitive wanted in America for insider-trading, who was arrested in Hong Kong following an American request to detain him. Martin was then sent back to the United States to stand trial. Nor was Hong Kong particularly convenient to Hawaii. There were no non-stop flights to it from Honolulu. Snowden’s flight took 8 hours and ten minutes just to Na