City Spies

A Dangerous Engagement (The Regency Spies of London, 3)

Gideon's Spies: The Secret History of the Mossad

Spies, Saboteurs and Secret Missions of World War II (Paperback)

Spies in Revolutionary Rhode Island

Assignment: Normandy: a Wwii Novel of Naval Intelligence and Spies

Agents of Empire: Knights, Corsairs, Jesuits and Spies in the 16th Century Mediterranean World [first edition]

Spies

Spies of the Balkans

Dark Spies: A Spycatcher Novel (Spycatcher, 4)

The Spark of Resistance: Women Spies in WWII

Bridge of Spies

They Dared Return: The True Story of Jewish Spies Behind the Lines in Nazi Germany

Curveball: Spies, Lies, and the Con Man Who Caused a War

Prince of Spies (The Richard Prince Thrillers)

Enemies Within: Communists, the Cambridge Spies and the Making of Modern Britain

Spies in the American Revolution for Kids : A History Book

Drawing Cartoons: Cool Spies, Evil Guys and Action Heroes

Kate and the Spies Sisters in

D-Day Girls: The Spies Who Armed the Resistance, Sabotaged the Nazis, and Helped Win World War II

Harriet Spies

The Debatable Land A Study of the Motives of Spies in Two Ages [first edition]

Civil War Spies Behind Enemy Lines Camilla J. Wilson

FDR's 12 Apostles: The Spies Who Paved The Way For The Invasion Of North Africa

Space Intelligence Agency: Spies and Espionage in the Space Race

Changing Face of Empire: Special Ops, Drones, Spies, Proxy Fighters, Secret Bases, and Cyberwarfare

Spooked: The Trump Dossier, Black Cube, and the Rise of Private Spies

Spies, Scouts, and Raiders: Irregular Operations (Time-Life The Civil War)

Operatives, Spies, and Saboteurs: The Unknown Story of the Men and Women of World War II's OSS

A Legacy of Spies John Le Carr

The Prince of Spies (Hope and Glory)