L'uomo che inseguiva le ombre

September 1859. The most powerful solar storm in history brings consequences to Earth, where unusual phenomena of the aurora borealis appear, and electromagnetic waves cause telegraphs on several continents to fail. But there is a particular effect that will not be felt for more than thirty years... May 1891. At the Reichenbach Falls, in Switzerland, the final clash takes place between Sherlock Holmes and his most bitter enemy, the "Napoleon of crime": Professor James Moriarty. The duelists both disappear, but are they really dead? A few days later, an English tourist wanders around Florence with a cautious air, looking for useful information to stop the diabolical professor's latest plan, implemented before his death. A plan that has to do somehow with one of the diaries of the mysterious Madame Helena Petrovna Blavatsky...