The Classic book The Sign of Four by Arthur Conan Doyle. This is the 2nd of 4 'longer' novels the author wrote about Sherlock Holmes (also featured in 56 short stories). Captain Morstan disappeared over 10 years ago and his daughter, desperate to find him, seeks the help of the great detective. Every year she receives a pearl in the mail by an unknown sender. The case takes Sherlock and Dr. Watson on an adventure to the Andaman Islands.
This book is downloadable in PDF, ePub, Kindle and TXT format.
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