In the shadowy aftermath of The Adventure of the Golden Pince-Nez, a case Sherlock Holmes considered closed is brutally ripped open. When his quest to secure the freedom of a Russian nihilist, Alexis Ivanov, leads him from the opulent halls of the Russian Embassy in London to the very heart of the Tsar’s court in St. Petersburg, Holmes and Watson find themselves entangled in a web of imperial politics and chilling realpolitik. From the foggy streets of London to the gilded cages of Tsarist power, this gripping narrative weaves together diplomacy and art, madness and genius.