There are 3 books in the Sherlock Holmes: The Classified Dossier series. The newest book is Sherlock Holmes and Dorian Gray which came out in 2023.

1
Sherlock Holmes and Count Dracula

Book cover of Sherlock Holmes and Count Dracula
Told through four interlinked cases, this Gothic horror mystery sees Sherlock Holmes and Count Dracula join forces to banish a terrible enemy

1902. Sherlock Holmes's latest case begins with a severed finger. With no signs of decomposition and an adverse reaction to silver, it is the most perplexing mystery yet…
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2
Sherlock Holmes and Mr Hyde

Book cover of Sherlock Holmes and Mr Hyde
A deftly crafted, scintillating mash-up of Victorian mystery and horror - Sherlock Holmes and Mr Hyde encounter villains with unfathomable, terrifying abilities...

1903. A darkness has descended on London. A series of grisly murders are uncovered, trophies taken, bodies arranged and soon there are whispers of Jack the Ripper's return.…

3
Sherlock Holmes and Dorian Gray

Book cover of Sherlock Holmes and Dorian Gray
Mysterious socialite Dorian Gray is at the centre of Sherlock Holmes' latest investigation in this astonishing, uncanny mash-up of Victorian mystery and horror.

1903
Sherlock Holmes and Dr John Watson have tickets to the newly arrived Egyptian Circus. Holmes is puzzled by his brother Mycroft's cryptic gift but is intrigued…