12 books • 3 series
The Histories of Sherlock Holmes (Further Adventures of Sherlock Holmes)
The Chronicles of Sherlock Holmes (Further Adventures of Sherlock Holmes)
The Travels of Sherlock Holmes
The Gathering Gloom
A Mighty Shadow (Exploits and Adventures of Brigadier Gerard, #2)
Set Europe Shaking
The Treasury of Sherlock Holmes
The Gate of Gold (The Dr. Watson Trilogy, #2)
Light in the Darkness
The Isle of Devils (The Dr. Watson Trilogy, #1)
The Assassination of Sherlock Holmes
The Oxford Deception