Passers-By: A Vintage Thriller of Espionage and Betrayal

A Maker of History: A Thrilling Tale of Intrigue and Power in Early 20th-Century Europe

The Profiteers: Greed, Deceit, and Political Turmoil: A Tale of Espionage and Conspiracy

The Long Arm of Mannister: A British Spy Thriller of International Intrigue and Political Machinations

The Mischief-Maker: A Tale of Political Intrigue and Betrayal in Post-WWI Europe

The Box with Broken Seals: Unraveling Secrets of International Intrigue

The Yellow Crayon: A Riveting Espionage Thriller of Betrayal and Conspiracy

Havoc: Intrigue and Suspense in Early 20th Century Europe

The Missioner: Intrigue, Espionage, and Political Conspiracies in Early 20th-Century Europe

Nobody's Man: A Thrilling Tale of Espionage and Betrayal

The Man and His Kingdom: A Tale of Power, Politics, and Personal Intrigue in the Early 20th Century

The Great Prince Shan: Intrigue and Power: A Political Thriller of Espionage and International Diplomacy

THE GREAT IMPERSONATION (Spy Thriller)

The Greatest Oppenheim Spy Thrillers: Tales of Intrigue, Deception & Suspense: The Spy Paramount, The Great Impersonation, The Double Traitor, The Vanished Messenger, The Pawns Court, The Box With Broken Seals...

The Zeppelin's Passenger: A Thrilling Tale of Espionage and Intrigue in World War I

A Monk of Cruta: Intrigue and Betrayal in Early 20th Century Italy

The Zeppelin's Passenger

Mysterious Mr. Sabin: A Tale of Intrigue and Betrayal in Edwardian Europe

The Great Impersonation: A Tale of Deception and Betrayal in World War I

A Daughter of Astrea