Within the intelligence community, Bob Hunter is known as the agent who caught master spy John Walker and brought an end to what many top officials call the most damaging espionage ring in U.S. history. Hunter, a foreign counterintelligence agent for the FBI, was the lead investigator on the case. His book presents an insider's account of the detection, pursuit, and capture of the U.S. Navy communications expert and his partners in espionage.

He writes from a unique perspective - no one else was involved with the case from beginning to end - and he allows the reader not only behind the scenes but into his mind as he plots his course of action.

Walker's elaborate spy network included his son, who was a seaman on a nuclear aircraft carrier; his brother; and his best friend. This book is the first to discuss in detail the interviews with his wife (who first put the FBI onto the case) and his brother, and to explain why the agency never believed the brother told the entire truth about his involvement. This is the first book to include interviews with the KGB general who supervised Walker and with the judges and prosecutors involved in the case.

It is also the only book to offer a close-up look at how the investigation was conducted and what the lead investigator was thinking as he attempted to bring down one of the biggest traitors in U.S. history.