Series featuring the detective "Si" Finn:
* The Admirable Tinker (1914)
* The Lady Who Dared (1915)
* The Mystery of the "Smiling Death" (1920)
* The Day of the Bear (1925)
Other notable works:
* The Passion for Romance (1901) - A satirical novel
* The Poison of the Tongues (1902) - A novel featuring a strong female protagonist
* The Lady in the Motor Car (1908) - A novel of romance and intrigue
* The Millionaire (1911) - A novel of social satire
* The Keepers of the King's Peace (1927) - A historical novel
Short stories and other works:
Jepson wrote extensively for magazines and newspapers and published a number of short story collections, including:
* The Lady Who Dared (1915)
* The Day of the Bear (1925)
* The Millionaire (1911)
His works were popular during his lifetime and have continued to be enjoyed by readers for their wit, suspense, and engaging characters.