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The Sign of the Four

Arthur Conan Doyle · detective novel, 1890·3 hrs in the original·original at gutenberg.org

The 30‑second version3 hrs → 50 sec

The case begins: Mary Morstan arrives at Baker Street to report her father's decade-old disappearance and the annual arrival of valuable pearls from an anonymous source, prompting Holmes and Watson to accompany her to a secret meeting with Thaddeus Sholto, who reveals that his father, Major Sholto, concealed Captain Morstan's death and withheld his share of a vast Indian treasure.
Murder at Pondicherry Lodge: When the group arrives at the Sholto estate to claim the treasure, they find Bartholomew Sholto dead in his locked room, killed by a poisoned dart fired by Tonga, a diminutive Andaman Islander, while his accomplice Jonathan Small, a one-legged ex-convict, lowered the treasure chest out through the roof and escaped by boat on the Thames.
Holmes reconstructs the crime: Using footprints, a creasote trail, and the tracking dog Toby, Holmes deduces the identities and escape route of both fugitives, identifies Tonga as an Andaman Islander from the tiny bare footprints and blowpipe darts, and locates the stolen steam launch Aurora hidden at a boatyard.
The river chase and capture: Holmes, Watson, and Inspector Athelney Jones pursue the Aurora down the Thames in a police launch; Tonga is shot dead when he raises his blowpipe, and Jonathan Small is hauled from the mud where his wooden leg has trapped him, but Small has already scattered the jewels of the Agra treasure into the river so that no one else can benefit from them.
Resolution and aftermath: Jonathan Small confesses the full history of the treasure, tracing it to a murder during the Indian Mutiny and a betrayal by Major Sholto, while Watson discovers the treasure chest is empty and, freed from the fear that Mary's wealth would make him a fortune-hunter, declares his love and is accepted; Holmes, unmoved by romance, reaches for his cocaine bottle.

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•Why it earns a slot

The Sign of the Four introduced Tonga and Jonathan Small as among Doyle's most vividly drawn antagonists, established Watson's marriage subplot that shapes the entire Holmes canon, and contains Holmes's famous maxim that when the impossible is eliminated whatever remains, however improbable, must be the truth.

Sherlock Holmes and Dr. Watson are hired by Mary Morstan, whose father vanished years ago and who has been receiving mysterious pearls from an unknown sender. The investigation leads them through murder, a stolen Indian treasure, and a river chase across the Thames, ultimately unraveling a conspiracy rooted in the 1857 Indian Mutiny. Watson falls in love with Mary along the way, and the treasure itself is lost forever when the captured fugitive scatters it into the river.

This distillation is written from the freely available original, which is always the better read when you have the time: gutenberg.org.

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The Sign of the Four

•Why it earns a slot

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