Churchill's German Army: The Germans who fought for Britain

Sons and Soldiers: The Untold Story of the Jews Who Escaped the Nazis and Returned With the U.S. Army to Fight Hitler

Spymaster: The Man Who Saved MI6

The CIA: An Imperial History

The Walls Have Ears: The Greatest Intelligence Operation of World War II

The Volunteer: The True Story of the Resistance Hero who Infiltrated Auschwitz – Costa Book of the Year 2019

The London Cage: The Secret History of Britain's World War II Interrogation Centre

Mossad: The Secret History of Israel's Intelligence Agency (How the Israeli Secret Service Recruit and Train Its Officers)

MI9: A History of the Secret Service for Escape and Evasion in World War Two

A Spy Alone

Target Tehran: How Israel Is Using Sabotage, Cyberwarfare, Assassination – and Secret Diplomacy – to Stop a Nuclear Iran and Create a New Middle East

Flirting with Danger: The Mysterious Life of Marguerite Harrison, Socialite Spy

Ghosts of Honolulu: A Japanese Spy, A Japanese American Spy Hunter, and the Untold Story of Pearl Harbor

Silent Wars: Espionage, Sabotage, and the Covert Battles in Cyberspace

The Secret War: Spies, Codes and Guerrillas 1939–1945

Spies: The epic intelligence war between East and West

Hunting Eichmann: How a Band of Survivors and a Young Spy Agency Chased Down the World’s Most Notorious Nazi

The Radium Girls: They paid with their lives. Their final fight was for justice.

A World Undone: The Story of the Great War, 1914 to 1918

The Oligarch's Daughter: A Novel