"The Valley of Fear" is the last novel by Arthur Conan Doyle where the reader meets Sherlock Holmes, the famous detective. He and Doctor Watson arrive to a country manor to investigate a possible murder. After receiving a coded message, Holmes links the murder to the name in the message. Clue by clue, our friends get closer to Holmes’ arch enemy Professor Moriarty. It is a brilliantly executed mystery, riddled with sufficient evidence and compelling, plot-driven structure. Detective fiction enthusiasts will not be disappointed.