The Valley of Fear - Sir Arthur Conan Doyle - Books -  - 9798588579605 - January 5, 2021
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The Valley of Fear

Sherlock Holmes receives a cipher message from Fred Porlock, a pseudonymous agent of Professor Moriarty. After Porlock sends the message, however, he changes his mind for fear of Moriarty's discovering that he is a traitor. He decides not to send the key to the cipher, but he sends Holmes a note telling of this decision. From the cipher message and the second note, Holmes is able to deduce that it is a book cipher and that the book used for the encryption is a common book, large (with at least 534 pages), printed in two columns per page, and standardised. An almanac fits these conditions exactly.

Media Books     Paperback Book   (Book with soft cover and glued back)
Released January 5, 2021
ISBN13 9798588579605
Pages 120
Dimensions 127 × 203 × 7 mm   ·   136 g
Language English  

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