# 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.dev/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.dev/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.dev/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.dev/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.dev/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

> 7 more chapter companions — [open a free preview](https://www.betterreads.dev/reader?bookId=the_sign_of_the_four_906kb&preview=1) to unlock the rest.

- [VI: Sherlock Holmes Gives a Demonstration](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/vi-sherlock-holmes-gives-a-demonstration.md)
- [VII: The Episode of the Barrel](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/vii-the-episode-of-the-barrel.md)
- [VIII: The Baker Street Irregulars](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/viii-the-baker-street-irregulars.md)
- [A Break in the Chain](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/ix-a-break-in-the-chain.md)
- [X: The End of the Islander](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/x-the-end-of-the-islander.md)
- [XI: The Great Agra Treasure](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/xi-the-great-agra-treasure.md)
- [The Strange Story of Jonathan Small](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/xii-the-strange-story-of-jonathan-small.md)

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