The Sign of the Four · Chapters
Chapters explained
Chapter companions for The Sign of the Four by Arthur Conan Doyle.
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Chapter 1
The Science of Deduction
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 romanticized account of their earlier case, then demonstrates his deductive method by analyzing Watson's brother's watch. The chapter ends with the arrival of Miss Mary Morstan.
Chapter 2
II: The Statement of the Case
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 valuable pearl each year on the same date, and today she receives a letter asking her to meet at the Lyceum Theatre. Holmes agrees to take the case and invites Watson to accompany them.
Chapter 3
In Quest of a Solution
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 of the four—Jonathan Small, Muhammad Singh, Abdullah Khan, Dost Akbar.' The trio embarks on a cab ride through foggy London to an unknown destination, eventually arriving at a house where a Hindu servant greets them.
Chapter 4
IV: The Story of the Bald-Headed Man
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'.
Chapter 5
The Tragedy of Pondicherry Lodge
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 four' beside him. The treasure is missing, and Thaddeus is distraught with fear of suspicion.
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