At Her Majestys Secret Service: The Chiefs of Britains Intelligence Service, MI6

100 Deadly Skills: The SEAL Operative's Guide to Eluding Pursuers, Evading Capture, and Surviving Any Dangerous Situation

Double Cross in Cairo: The True Story of the Spy Who Turned the Tide of War in the Middle East

Countdown to Zero Day: Stuxnet and the Launch of the World's First Digital Weapon

Historical Dictionary of World War I Intelligence

No Place to Hide: Edward Snowden, the NSA, and the U.S. Surveillance State

Codeword Overlord: Axis Espionage and the D-Day Landings

Imminent: Inside the Pentagon's Hunt for UFOs

GCHQ: The Secret Wireless War, 1900–1986

Becoming Bulletproof: Life Lessons from a Secret Service Agent

Hitler's Trojan Horse: The Fall of the Abwehr, 1943–1945

How to Break a Terrorist: The U.S. Interrogators Who Used Brains, Not Brutality, to Take Down the Deadliest Man in Iraq

Encyclopedia of Political Assassinations

Way of the Reaper: My Greatest Untold Missions and the Art of Being a Sniper

Cold War Spymaster: The Legacy of Guy Liddell, Deputy Director of MI5

SAS: Rogue Heroes: The authorized wartime history from the Sunday Times bestselling author

Spycraft Secrets: An Espionage A-Z

The Way of the Knife: The CIA, a Secret Army, and a War at the Ends of the Earth

The A to Z of British Intelligence

The Jakarta Method: Washington's Anticommunist Crusade and the Mass Murder Program that Shaped Our World