"The Mystery of Saint Leonard" is an exciting detective story written by the famous English writer Arthur Conan Doyle. In this book, a series of mysterious events takes place in a cozy English town, where a series of inexplicable crimes take place. The main character, the famous detective Sherlock Holmes, together with his reliable companion Dr. Watson, undertake to solve the mystery of mysterious disappearances and murders. Readers experience with them every step of the investigation and sympathize with the characters in solving this complicated puzzle. "The Mystery of St. Leonard" will captivate you from the first pages and keep you in suspense until the last page.