When It Was Dark (1903)
Made in His Image (1906)
The Soul-Stealer (1906) (writing as Ranger Gull)
The Angel (1908)
And it Came to Pass (1915)
The Secret Sea-Plane (1915)
The Enemies of England (1915) (writing as Ranger Gull)
Lucky Mr Loder (1918)
The Secret Monitor (1918)
The Air Pirate (1919) (writing as Ranger Gull)
Doris Moore (1919)
The House of Danger (1920)
The City in the Clouds (1921) (writing as Ranger Gull)
The Love Hater (1921)
The Dark Dominion (1923)
When the World Reeled (1924)