The Sign of the Four

Arthur Conan Doyle

Summary

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."

A decade after her father mysteriously vanished in London, Mary Morstan receives a strange summons and a gift of priceless pearls. She turns to Sherlock Holmes and Dr. Watson for help, leading them into a labyrinthine plot involving a secret pact made in India, a blood-stained treasure map, and a locked-room murder committed with a poisoned dart.

A High-Stakes Pursuit: The Sign of the Four showcases the darker, more restless side of Holmes's genius. To solve the riddle of the "Four," he must lead Watson and the Baker Street Irregulars from the suburban villas of London to a pulse-pounding steamboat chase down the River Thames. Along the way, the novel explores themes of greed, betrayal, and the lingering shadows of colonial history.

The Heart of the Legend: This novel is pivotal for the series, introducing the woman who would become Mrs. Watson and providing the first deep look into Holmes's reliance on chemical stimulants to battle the "dull routine of existence." It is a masterclass in atmosphere and pacing, blending the gritty realism of Victorian forensics with the exotic allure of an Eastern mystery.

Love, loyalty, and a treasure that brings only ruin. Purchase "The Sign of the Four" today and experience the most exotic mystery in the Holmes collection.

Available since: 01/02/2026.

Print length: 193 pages.

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