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Miss Mary Marstan receives through the post once a year a large pearl without any clue as to the sender. When her mysterious correspondent requests a meeting, H

In this fascinating adventure, first published in Lippincott's Monthly Magazine in 1890, Sherlock Holmes tracks down a mysterious Indian treasure, and Dr. Watso

The Sign of the Four (1890), also called The Sign of Four, is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Doyle wrote four nov

The Sign of the Four (1890), also called The Sign of Four, is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Doyle wrote four nov