The Sign of Four, was written for the Lippincott's Magazine by Sir Arthur Conan Doyle in 1890. This was the second Sherlock Holmes novel.
The story collects a colorful group of people together, among them Jonathan Small who has a wooden leg and a dwarf from Tonga islands.
| Chapter 1 | The Science of Deduction |
| Chapter 2 | The Statement of the Case |
| Chapter 3 | In Quest of a Solution |
| Chapter 4 | The Story of the Bald-headed Man |
| Chapter 5 | The Tragedy of Pondicherry Lodge |
| Chapter 6 | Sherlock Holmes gives a demonstration |
| Chapter 7 | The Episode of the Barrel |
| Chapter 8 | The Baker Street Irregulars |
| Chapter 9 | A Break in the Chain |
| Chapter 10 | The End of the Islander |
| Chapter 11 | The Great Agra Treasure |
| Chapter 12 | The Strange Story of Jonathan Small |