The Hound of the Baskervilles is a classic detective novel by Arthur Conan Doyle, first published in 1902. It is one of the most famous and popular cases of Sherlock Holmes. In the novel, Holmes and his loyal friend, Dr. Watson, investigate the mystery of the Baskerville family and try to determine whether the legendary, fearsome hound that is said to haunt the Baskerville family truly exists. This book is filled with tension, mysteries, and unexpected twists, making it an unforgettable read.