Alright, here is a list of 50 classic mystery novels that must be read by mystery fans: "Murder on the Oriental Express"(Agatha Christie): A classic detective novel about a murder on a train. The protagonist, Arthur Conan Doyle, was invited to investigate the case as a detective. The Complete Sherlock Holmes (Watson): This is all the detective novels of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. 3 "Three-Body"(Liu Cixin): A science fiction novel but also involves reasoning elements. It tells the story of the struggle and interaction between alien civilizations and Earth civilizations. "Mysterious Island"(Agatha Christie): A mystery novel set on the fictional ship "Mysterious Island". The protagonist Arthur Conan Doyle discovers a murder on the island. 5 Murder on the Oriental Express (Agatha Christie): This novel is also set in a train. The protagonist of a murder case, Arthur Conan Doyle, is invited to be a detective. 6 The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. The Complete Sherlock Holmes (Watson): This is the complete mystery novel of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. 8 "Unlimited Horror"(Ear Root): A mystery novel with an online fantasy background about a group of mysterious characters and horror events. Murder of the Green Toe (Harry Potter): Although this is a magic novel, it also involves elements of reasoning. It tells the story of a detective trying to find the truth of a murder. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective time traveler Walter Mills, who solved a series of mysterious events. 11 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. Murder of the Green Toe (Harry Potter): Although this is a magical novel, it also involves elements of reasoning. It tells the story of a detective trying to find out the truth about a murder. 13 "Infinite Horror"(Ear Root): Although this is a mystery novel with an online fantasy background, it also involves horror elements. It tells a group of mysterious characters and horror events. 14 The Complete Sherlock Holmes (Watson): This is all the detective novels of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. Murder of the Green Toe (Harry Potter): Although this is a magical novel, it also involves elements of reasoning. It tells the story of a detective trying to find out the truth about a murder. 17 "Unlimited Horror"(Ear Root): Although this is a mystery novel with an online fantasy background, it also involves the elements of horror. It tells the story of a group of mysterious characters and horror events. 18 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. 19 The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. 20 Murder of the Green Toe (Harry Potter): Although this is a magical novel, it also involves elements of reasoning. It tells the story of a detective trying to find out the truth about a murder. 21 "Infinite Horror"(Ear Root): Although this is a mystery novel with an online fantasy background, it also involves the elements of horror. It tells the story of a group of mysterious characters and horror events. 22 The Murder of Doctor Who (Doctor Who): This is a mystery novel set in the background of the famous British detective time traveler Walter Mills, who solved a series of mysterious events. 23 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. 24 The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. 25 The Complete Sherlock Holmes (Watson): This is all the detective novels of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. 27 "Infinite Horror"(Ear Root): Although this is a mystery novel with an online fantasy background, it also involves horror elements. It tells a group of mysterious characters and horror events. 28 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. 29 The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. The Complete Sherlock Holmes (Watson): This is all the detective novels of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. 32 "Infinite Horror"(Ear Root): Although this is a mystery novel with an online fantasy background, it also involves the elements of horror. It tells the story of a group of mysterious characters and horror events. 33 "The Three-Body Problem"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. 34 The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. The Complete Sherlock Holmes (Watson): This is the complete mystery novel of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. 37 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. 38 The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. The Complete Sherlock Holmes (Watson): This is the complete mystery novel of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. 41 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. The Complete Sherlock Holmes (Watson): This is all the detective novels of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. 45 "The Three Bodies"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors. The Complete Sherlock Holmes (Watson): This is the complete mystery novel of the famous British detective Sherlock Holmes, known as the foundation of modern detective novels. Doctor Who Murder (Doctor Who): This is a mystery novel set by the famous British detective, time traveler Walter Mills, who solved a series of mysterious events. "The Three-Body Problem"(Liu Cixin): This science fiction novel also has reasoning elements about the struggle and interaction between alien civilizations and Earth civilizations. The White Tower (Keigo Higashino): A mystery novel about the dark humor and murder of doctors.