The Sign of the Four/福尔摩斯探案全集：四签名

The Sign of the Four is the second Sherlock Holmes detective novel written by Arthur Conan Doyle, published in 1890. 《福尔摩斯探案全集之四签名》是柯南-道尔1890年创作的第二本以夏洛克-福尔摩斯为主角的推理小说。 In The Sign of the Four, Sherlock Holmes and Dr. Watson confront a perplexing mystery involving hidden treasure, a secret pact, and a sinister pursuit through London's night.As Holmes untangles a web of betrayal and greed, Watson faces matters of the heart, combining adventure, deduction, and danger in one of their most dynamic early cases. 英国贵妇人玛丽的父亲摩斯坦失踪多年，仅留下一张有四个签名的纸条。福尔摩斯开始调查后不久，摩斯坦生前好友舒尔托一家又遭遇不幸，命案现场也留有同样的纸条。福尔摩斯决意找出这独特的犯罪背后凶险而又不可预知的真相。阴谋、背叛、宝藏、谋杀......一切秘密都隐藏在"四签名"中。本书结构严谨，环环紧扣，故事情节惊险离奇，引人人胜，进一步奠定了柯南-道尔在侦探推理小说界不可撼动的地位。