Three Monarchs

The game is once again afoot in this thrilling mystery from the bestselling author of The House of Silk, sanctioned by the Conan Doyle estate, which explores what really happened when Sherlock Holmes and his arch nemesis Professor Moriarty tumbled to their doom at the Reichenbach Falls

Internationally bestselling author Anthony Horowitz’s nail-biting new novel plunges us back into the dark and comp...