An immersive reading of the complete novel.
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The Sign of the Four (1890) is the second Sherlock Holmes novel, opening as Mary Morstan brings Holmes a strange case: every year since her father's disappearance she has received a single lustrous pearl, and now a summons to meet the unknown sender. The trail leads to a stolen Agra treasure, a broken oath among four convicts, and a murder at Pondicherry Lodge that ends in a breathless pursuit down the Thames. It is the book that gave us Holmes's seven-per-cent solution and Watson's courtship of the woman he would marry.
This is an immersive reading edition: human narration synchronized with on-screen text, every word highlighted in time with the narrator’s voice.
Source text (Project Gutenberg) and narration (LibriVox) are in the public domain. This LitReads edition — typography, word-by-word synchronization, composition, and original visual design — © 2026 LitReads. All rights reserved.