This story is about a young Bengali private detective named Saralakkho Holmes living in London. This story is an adaptation from Arthur Conan Doyle's famous novel 'Sherlock Holmes and the Hound of Basakervilles'. Saralakkho is intrigued by a centuries-old legend in which every generation of the wealthy Baskerville family is eventually killed by a monstrous hound. He sends Arya Sen, his friend and associate to Baskerville for investigating this case with Sekhar Roy Chowdhury, the only living heir of Baskerville family. In the course of the narrative, we meet many characters and the suspect list goes on including Sekhar. Is there really a hound or it's just a myth and how did he and Arya catches the main culprit is the crux of the story.