The Temptress: Espionage, Mystery, and Romance in Pre-World War I Europe

Tracked by Wireless: A Thrilling Tale of Espionage and Wireless Technology in Early 20th Century Europe

A Secret Service: Being Strange Tales of a Nihilist: Unveiling the Dark World of Espionage and Nihilism

Mr. Cavendish, I Presume

The Eye of Istar: A Romance of the Land of No Return

Splendid

The House of Whispers: Secrets and Intrigue in a Grand Manor: A Gothic Mystery Tale

How to Marry a Marquis

Espionage & Mystery Novels: Collection of Over 100 Spy Classics, Action Thrillers, Crime Novels

Brighter Than the Sun

Hushed Up! A Mystery of London: Intrigue and Deception in Victorian London

The Hathaways Complete Series: Mine Till Midnight, Seduce Me at Sunrise, Tempt Me at Twilight, Married by Morning, and Love in the Afternoon

The Zeppelin Destroyer: Being Some Chapters of Secret History

Whoso Findeth a Wife: Love, Betrayal, and Redemption in Edwardian England

In White Raiment: A Victorian Tale of Intrigue and Suspense