Sherlock Holmes was a classic mystery novel series created by the famous British detective novelist Conan Doyle. It included seven main stories, including Mr. Holmes 'Murder, Watson and the Detective Group, Three Cup Chicken Murder, Murder in Morgg Street, The Hound of Baskerville, and The Red Letter Society. The following is a brief summary of each story: The Murder of Mr. Holmes In the story, Holmes was accused by his friend and assistant Watson of murdering his father. After an investigation, Holmes finally proved his innocence but was forced to leave England because he refused to reveal the truth about his father's death. Watson and the Detective Group In the story, Holmes and Watson participated in the investigation of many cases, including the Murder in Morgue Street and the Murder of Three Cup Chicken. They solved many seemingly impossible problems through their own reasoning and intelligence. Murder in Morgar Street In the story, a group of friends went to see Holmes 'father, but his friend Watson mistook him for the murderer. During the investigation, Holmes and Watson discovered the truth and uncovered the truth of the Murder in Morgar Street. The Red Letter Society In the story, Holmes joined the Red Letter Society, an organization dedicated to eliminating criminals. In this organization, Holmes solved many cases through cooperation and reasoning with other members. The Hound of Baskerville In the story, Holmes received a puzzle about a hound and needed to find clues to deduce the identity of the hound. Through his cooperation with Watson, he used his own ingenuity to finally solve this puzzle. The Queen's Pet In the story, Holmes received a puzzle about the Queen's pet and needed to find clues to deduce the identity of the pet. Through his cooperation with Watson, he used his own ingenuity to finally solve this puzzle. The Final Detective In the story, Holmes realized that he was old and the murderer of the case had never been found. He decided to leave this world. Watson and the other members sent him off. In this story, Holmes showed his final reasoning to express his love for the world and his trust in human wisdom.