Back-to-back Sherlock Holmes, and The Sign of Four was also great. The mystery outlined a murder associated to the theft of Indian treasure, where a simple letter leads to a multi-staged killing. I preferred it to the first one, if didn’t have two parts which was an improvement and the mystery was more exciting. It still had the same flaws, namely Sherlock’s unexplained genius, and also the sequel was really derogatory toward African and Indian characters, the case of many books from such time. In looking over such issues, the story was enjoyable and Conan-Doyle’s descriptions of London were beautiful. Such prose was the highlight of the book and easily elevate it above a Study in Scarlet.