# The Sign of the Four — Chapters explained

> Chapter companions for The Sign of the Four by Arthur Conan Doyle.

- [The Science of Deduction](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/i-the-science-of-deduction.md): Watson observes Holmes injecting cocaine and confronts him about his drug use. Holmes defends his need for mental stimulation and explains his unique role as the world's only consulting detective. He criticizes Watson's 
- [II: The Statement of the Case](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/ii-the-statement-of-the-case.md): Miss Mary Morstan visits Sherlock Holmes and Dr. Watson at 221B Baker Street to present a strange mystery. Her father, Captain Morstan, disappeared ten years ago after returning from India. Since then, she has received a
- [In Quest of a Solution](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/iii-in-quest-of-a-solution.md): Holmes deduces that Major Sholto's death in 1882 is connected to Captain Morstan's disappearance and the annual gifts to Miss Morstan. Miss Morstan shows Holmes a mysterious paper with a diagram and the names 'The sign o
- [IV: The Story of the Bald-Headed Man](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/iv-the-story-of-the-bald-headed-man.md): Thaddeus Sholto recounts his father's deathbed confession about Captain Morstan's accidental death and the hidden Agra treasure, revealing a mysterious intruder and the phrase 'The Sign of the Four'.
- [The Tragedy of Pondicherry Lodge](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/v-the-tragedy-of-pondicherry-lodge.md): Holmes, Watson, and Miss Morstan accompany Thaddeus Sholto to Pondicherry Lodge, where they discover his twin brother Bartholomew dead in a locked room, with a poisoned thorn in his neck and the note 'The sign of the fou
- [VI: Sherlock Holmes Gives a Demonstration](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/vi-sherlock-holmes-gives-a-demonstration.md): Holmes demonstrates his deductive methods to Watson by reconstructing the crime scene at Bartholomew Sholto's room. He identifies the wooden-legged man's entry via the window with an ally's help, discovers a trapdoor to 
- [VII: The Episode of the Barrel](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/vii-the-episode-of-the-barrel.md): Watson escorts Miss Morstan home, reflecting on his growing feelings for her and the barrier of the Agra treasure. He then retrieves Toby from Mr. Sherman, returns to Pondicherry Lodge, and assists Holmes in analyzing th
- [VIII: The Baker Street Irregulars](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/viii-the-baker-street-irregulars.md): Holmes and Watson read a newspaper article praising Athelney Jones's arrest of Thaddeus Sholto and others. Holmes summons the Baker Street Irregulars, led by Wiggins, to search for the steam launch Aurora and its owner M
- [A Break in the Chain](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/ix-a-break-in-the-chain.md): Watson awakens to find Holmes frustrated by a lack of progress in the case. Holmes sends Watson to visit Mrs. Cecil Forrester and Miss Morstan, while he himself goes undercover as an elderly sailor to gather information.
- [X: The End of the Islander](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/x-the-end-of-the-islander.md): Holmes, Watson, and Athelney Jones dine together before embarking on a river chase to intercept Jonathan Small and his accomplice. Holmes explains his deductions leading to the launch's location at Jacobson's Yard. They 
- [XI: The Great Agra Treasure](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/xi-the-great-agra-treasure.md): Jonathan Small is captured and brought aboard the police launch. He recounts his role in the events, blaming Tonga for Bartholomew Sholto's death and expressing regret over the curse of the Agra treasure. Holmes and Athe
- [The Strange Story of Jonathan Small](https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters/xii-the-strange-story-of-jonathan-small.md): Jonathan Small recounts his life story, including his service in India, the murder of Achmet for the Agra treasure, his imprisonment, escape with Tonga, and his relentless pursuit of revenge against Major Sholto. He reve

HTML index: https://www.betterreads.online/discover/the_sign_of_the_four_se/chapters