"The Secret of Cloomber Hall" is an exciting novel by the famous writer Arthur Conan Doyle. This book tells the story of a mysterious material that is the basis of an ancient legend about the curse of Cloomber Hall - a majestic English castle. The main character, John Fernix, goes to the west of Scotland to reveal the secret of this place and save his family from danger. Readers literally experience each event with the main characters, envy their courage and intelligence, and form their own hypotheses about the hidden secrets of Cloomber Hall. This book is a vivid example of the mystical detective genre, which attracts the attention of readers with its mystery, unpredictability and tense plot.