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The Sign of the Four annotated edition cover

Classic Book Guide

The Sign of the Four

by Arthur Conan Doyle

Six pearls, a vanished captain, and an Agra treasure pursued across half a century — the second Sherlock Holmes novel, with a river chase to remember.

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Explore The Sign of the Four

The Sign of the Four: A Complete Guide to the Second Holmes Novel

Explore The Sign of the Four — Conan Doyle's 1890 Holmes novel of stolen treasure, the Indian Mutiny, and a deadly hunt down the Thames.

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Explore this classic through reading guides, literary analysis, historical context, and reviews. Annotated editions at DodaBooks are designed to make difficult passages, references, and historical details easier to understand.