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

Historical Dictionary of Ian Fleming's World of Intelligence: Fact and Fiction

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

Classified!: The Adventures of a Molehunter

The Day After Roswell

Historical Dictionary of British Intelligence: Edition 2

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

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

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

Hitler's Nest of Vipers: The Rise Of The Abwehr

Becoming Bulletproof: Life Lessons from a Secret Service Agent

Historical Dictionary of Cold War Intelligence

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

MI6: British Secret Intelligence Service Operations, 1909–1945

Imminent: Inside the Pentagon's Hunt for UFOs

MI5: British Security Service Operations, 1909–1945: The True Story of the Most Secret counter-espionage Organisation in the World

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

Secret War: The Story of SOE, Britain's Wartime Sabotage Organisation

100 Deadly Skills: Survival Edition: The SEAL Operative's Guide to Surviving in the Wild and Being Prepared for Any Disaster