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Bath, Alan Harris, Tracking the Axis Enemy, The Triumph of Anglo-American Naval Intelligence, Lawrence, Kansas: University Press of Kansas, 1998.
Bassett, Richard, Hitler’s Spy Chief, The Wilhelm Canaris Mystery, London: Cassell, 2005.
Blandford, Edmund L., SS Intelligence, The Nazi Secret Service, Edison, NJ: Castle Books, 2001.
BBC and the Imperial War Museum, The Secret War (DVDs), documentary produced in 1977.
Beavan, Colin, Operation Jedburgh, D-Day and America’s First Shadow War, London: Penguin Books, 2006.
Beesly, Patrick, Very Special Intelligence, the Story of the Admiralty’s Operational Intelligence Centre, 1939-1945, Garden City, N.Y.: Doubleday & Co., 1978.
Blandford, Edmund L., SS Intelligence, The Nazi Secret Service, Edison, NJ: Castle Books, 2001.
Booth, Nicholas, ZigZag, The Incredible Wartime Exploits of Double Agent Eddie Chapman, New York: Arcade Publishing, 2007.
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Brissaud, André, Canaris, the Biography of Admiral Canaris, Chief of German Military Intelligence in the Second World War, New York: Grosset & Dunlap, 1974.
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Cave Brown, Anthony, Bodyguard of Lies, New York: Harper & Row, Publishers, 1975.
Colvin, Ian, Hitler’s Secret Enemy, Admiral Canaris: Patriot or Traitor, London: Pan Books, 1957.
Cookridge, E.H., Inside S.O.E., The First Full Story of Special Operations Executive in Western Europe, 1940-1945, London: Arthur Barker Ltd., 1966.
Cowburn, Benjamin, No Cloak, No Dagger, Allied Spycraft in Occupied France, London: Frontline Books, 2014.
DeBrosse, Jim and Colin Burke, The Secret in Building 26, The Untold Story of How American Broke the Final U-Boat Enigma Code, New York: Random House Trade Paperbacks, 2005.
Delattre, Lucas, A Spy at the Heart of the Third Reich, the Extraordinary Story of Fritz Kolbe, America’s Most Important Spy in World War II, New York: Atlantic Monthly Press, 2005.
Downs, Donald, The Scarlet Thread, Adventures in Wartime Espionage, NY: The British Book Centre, 1953.
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Garlinski, Jozef, The Enigma War, New York: Charles Scribner’s Sons, 1979.
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Holt, Thaddeus, The Deceivers, Allied Military Deception in the Second World War, NY: Scribner, 2004.
Howard, Michael, British Intelligence in the Second World War, vol. 5, Strategic Decception, New York: Cambridge University Press, 1990.
Hyde, H. Montgomery, Room 3603, The Incredible True Story of Secret Intelligence Operations During World War II, New York: The Lyons Press, 1962.
Hyde, H. Montgomery, Secret Intelligence Agent, British Espionage in America and the Creation of the OSS, New York: St. Martin’s Press, 1982.
Jeffery, Keith, The Secret History of MI6, New York: Penguin Books, 2010
Jones, R.V., The Wizard War, British Scientific Intelligence, 1939-1945, New York: Coward, McCann & Geoghegan, Inc., 1978. (In the UK the book was published as Most Secret War but with the same subtitle.)
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Keegan, John, Intelligence in War, New York: Vintage Books, 2004.
Kramish, Arnold, The Griffin, the Greatest Untold Espionage Story of World War II, Boston: Houghton Mifflin Co., Boston.
Leverkuehn, Paul, German Military Intelligence, London: Weidenfeld and Nicolson, 1954.
Lynn, Vera, Unsung Heroines: The Women who Won the War, London: Sidgwick & Jackson, 1990.
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Macintyre, Ben, Agent Zigzag, A True Story of Nazi Espionage, Love, and Betrayal, NY: Three Rivers Press, 2007. Info on the Abwehr.
Macintyre, Ben, Double Cross, The True Story of the D-Day Spies, New York: Crown Publishers, 2012.
Marks, Leo, Between Silk and Cyanide, A Codemaker’s War, 1941-1945, New York: Touchstone Book, 2000.
Masterman, J.C., The Double-Cross System in the War of 1939 to 1945, New Haven, Connecticut: Yale University Press, 1972.
Matthews, Tony, Shadows Dancing, Japanese Espionage Against the West, 1939-1945, New York: St. Martin’s Press, 1993.
McLachlan, Donald, Room 39, a Study in Naval Intelligence, New York: Atheneum, 1968.
Montagu, Ewen, Beyond Top Secret Ultra, New York: Coward, McCann & Geoghegan, Inc., 1978.
Montagu, Ewen, The Man Who Never Was, New York: Bantam Books, Inc., 1964.
Paine, Lauran, German Military Intelligence in World War II, The Abwehr, New York: Military Heritage Press, 1984.
Perrin, Nigel, Spirit of Resistance, The Life of SOE Agent Harry Peuleve, DSO MC, Barnsley, South Yorkshire: Pen & Sword Military, 2008.
Pinto, Oreste, Spy-catcher, New York: Harper & Brothers, 1952.
Rankin, Nicholas, Churchill’s Wizards: The British Genius for Deception, 1914-1945, London: Faber & Faber, 2008.
Ryan, Mark, The Hornet’s Sting, The Amazing Untold Story of World War II Spy Thomas Sneum, New York: Skyhorse Publishing, 2009.
Schellenberg, Walter, The Labyrinth, Memoirs of Walter Schellenberg, Hitler’s Chief of Counterintelligence, Boston: Da Capo Press, 2000.
Scotland, Lt. Col. A.P., The London Cage, London: Evans Brothers Ltd., 1957.
Somer, Dr. J.M., Zij Sprongen in de Nacht, De Nederlandse Inlichtingendienst te Londen in de Jaren 1943-1945, Assen: Van Gorcum & Comp., 1950.
Tolliver, Raymond F., The Interrogator, the Story of Hans Joachim Scharff, Master Interrogator of the Luftwaffe, Altgen, PA: Schiffer Military History, 1997.
Van der Bijl, Nick, Sharing the Secret, A History of the Intelligence Corps, 1940-2010, South Yorkshire, U.K.: Pen and Sword, 2013.
Waller, John H., The Unseen War in Europe, Espionage and Conspiracy in the Second World War, London: I.B. Tauris Publishers, 1996.
Weber, Guy (ed.), Scouts Résistants de la Cité Ardente, Dinant, Belgium: L. Bourdeaux-Capelle, 1992.
Welchman, Gordon, The Hut Six Story, Breaking the Enigma Codes, New York: McGraw Hill, 1982.
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West, Nigel, MI6, British Secret Intelligence Service Operations, 1909-1945, New York: Random House, 1983.
Whiting, Charles, Canaris, New York: Ballantine Books, 1973.
Winterbotham, F.W., The Ultra Secret, New York: Harper & Row, 1974.
Zembsch-Schreve, Guido, Pierre Lalande, Special Agent, London: Leo Cooper, 1996.
WWII Netherlands Escape Lines 