A missing father. A secret pact. A treasure that comes at a deadly price.

The Sign of the Four (1890), by Sir Arthur Conan Doyle, is the thrilling second Sherlock Holmes novel, showcasing the detective's brilliance and cementing his legendary partnership with Dr. Watson.

When Mary Morstan seeks Holmes' help in solving the mystery of her vanished father and a series of cryptic gifts, the case unravels into a dark tale of greed, betrayal, and murder. At its heart lies a pact known as the Sign of the Four, tied to a hidden treasure and the shadows of colonial India.

Packed with suspense, adventure, and unforgettable deduction, this novel not only reveals Holmes' sharp intellect but also introduces Watson's romance with Mary Morstan—adding depth to the timeless duo.

Gripping and atmospheric, The Sign of the Four remains one of Conan Doyle's finest works, blending classic detective fiction with high-stakes adventure.

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