You will probably only find it in a second-hand bookstore (I found mine in Ottawa), or you can wait a month and maybe Amazon will be able to find a paperback version for you, but a great book on a fantastic intelligence success is The Double-Cross System by Sir J.C. Masterman. The short version: British intel caught and turned every Nazi spy the Third Reich sent into the country during WW II. If you have trouble with dates WW II ended in 1945; Double-Cross was published in 1972.
About Michael Tanji
Michael Tanji spent nearly 20 years in the US intelligence community. Trained in both SIGINT and HUMINT disciplines he has worked at the Defense Intelligence Agency, the National Security Agency, and the National Reconnaissance Office. At various points in his career he served as an expert in information warfare, computer network operations, computer forensics, and indications and warning. A veteran of the US Army, Michael has served in both strategic and tactical assignments in the Pacific Theater, the Balkans, and the Middle East.