The NSA Report: Liberty and Security in a Changing World

By President's Review Group on Intelligence and Communications Technologies, The, Richard A. Clarke, Michael J. Morell, Geoffrey R. Stone, Cass R. Sunstein

Forgotten Voices of the Secret War: An Inside History of Special Operations in the Second World War

By Roderick Bailey

The Faber Book of Espionage

By Nigel West

John le Carré: The Biography

By Sisman, Adam

MI5 in the Great War

By Nigel West

A Pretext for War: 9/11, Iraq, and the Abuse of America's Intelligence Agencies

By James Bamford

We Are Bellingcat: An Intelligence Agency for the People

By Eliot Higgins

The Twins: The SOE's Brothers of Vengeance

By Peter Jacobs

They Fought Alone: The Story of British Agents in France

By Maurice Buckmaster

SECRET AGENTS POCKET MANUAL

The Naked Spy

By Yevgeny Ivanov, Gennady Sokolov, Christine Keeler

Next Stop Execution

By Oleg Gordievsky

Secret Agent Handbook

By Scholastic

Intercept: The Secret History of Computers and Spies

By Gordon Corera

A Spy Named Orphan: The Enigma of Donald Maclean

By Roland Philipps

Critical Thinking for Strategic Intelligence

By Katherine H. Pherson, Randolph H. Pherson

Klop: Britain's most ingenious spy

By Peter Day

A History of the Russian Secret Service

By Richard Deacon

The Ariadne Objective: Patrick Leigh Fermor and the Underground War to Rescue Crete from the Nazis

By Wes Davis

Espionage: An A-Z of Spies and Secrets

By Richard M. Bennett, David Shayler

The Black Banners Declassified

By Ali Soufan

Britain's Best Kept Secret: Ultra's Base at Bletchley Park

By Ted Enever

Operation Mincemeat: The True Spy Story That Changed the Course of World War II

By Ben Macintyre

Lord Butler's Report: Espionage and the Iraq War

By Lord Butler, Tim Coates

Terror and Resistance: Study of Political Violence

By Eugene Victor Walter

See No Evil: The True Story of Ground Soldier in the CIA's Counterterrorism Wars

By Robert Baer

Agent Zigzag: The True Wartime Story of Eddie Chapman, Lover, Betrayer, Hero, Spy

By Ben Macintyre

The Outsider

By Frederick Forsyth

The Lion House: Discover the life of Suleyman the Magnificent, the most feared man of the sixteenth century

By Christopher de Bellaigue

UK Eyes Alpha: Inside Story of British Intelligence

By Mark L. Urban