Espionage

The Man and His Kingdom

Expiation

The Human Touch

Lipstick and Lies

The Zeppelin Destroyer

The Return of Clubfoot

Tracked by Wireless

Pickle the Spy; Or, the Incognito of Prince Charles

Between the Lines: Secret Service Stories Told Fifty Years After

False Evidence

Michael Strogoff; Or, The Courier of the Czar

The Complete Gay Triangle Collection

The Gay Triangle

My Secret Service, Vienna-Sophia-Constantinople-Nish-Belgrade-Asia Minor

Huntingtower

Number 70, Berlin

Guns of the Gods

The Sign of the Stranger

The Border Spy; or, The Beautiful Captive of the Rebel Camp

Britain's Deadly Peril