Dr. Wells offers an exhilarating deep dive into the world of British Naval Intelligence, exploring its intricacies with a level of detail and professionalism never before seen. As the only living person to have served in both British and United States Intelligence, and having been trained by the leading figures of British Naval Intelligence during World War Two, Anthony Wells brings unmatched expertise to this compelling history. Spanning over 65 years, this book draws readers into a captivating exploration of the political, institutional, organizational, personal, operational, strategic, and technical aspects of British Naval Intelligence across both World Wars. Wells invites us into the inner sanctum of British Naval Intelligence, revealing how history was shaped by the extraordinary expertise, courage, resilience, and intellectual brilliance of those who came from all corners of British society. This book not only enthrals and captivates but also educates, shedding light on the essence of outstanding intelligence work, much of which continues to influence the present day.