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

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

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

Historical Dictionary of British Intelligence: Edition 2

A Spy Among Friends: Now a major ITV series starring Damian Lewis and Guy Pearce

Encyclopedia of Political Assassinations

Imminent: Inside the Pentagon's Hunt for UFOs

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

Churchill's Ministry of Ungentlemanly Warfare: The Mavericks who Plotted Hitler's Defeat

Spycraft Secrets: An Espionage A-Z

Becoming Bulletproof: Life Lessons from a Secret Service Agent

Spies Who Changed History: The Greatest Spies & Agents of the 20th Century

Robert Ludlum's The Arctic Event: A Covert-One novel

Historical Dictionary of Signals Intelligence

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

Historical Dictionary of Sexspionage

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

The A to Z of British Intelligence

Surprise, Kill, Vanish: The Definitive History of Secret CIA Assassins, Armies and Operators