
by Irene Adler · Planeta · tapa dura · ISBN 9788408215332

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In 'The Riddle of the Man in the Top Hat', Sherlock, Lupin, and Irene face a new and fascinating mystery. Anastasia Romanov, the Tsar's daughter, before being murdered, gives her sister Mila a key and a secret code. Mila will not rest until she reveals the mystery hidden in that code, a secret so dark that it is written on a completely blank sheet. Only with the help of Irene, Sherlock, and Arsène, the intrepid detective will be able to shed light on the enigma, in a plot with spies, international intrigues, and evil hitmen.

Pierdomenico Baccalario is an Italian author of children's and young adult fiction, best known for his Ulysses Moore series that sold more than 10 million copies worldwide.
