4. Wang Yao, a slightly famous private detective, received a big case that he had never encountered before. This case started with the narration of a woman who was crying - his old acquaintance Alfred F. Jones has become the city's leading novelist, and his pseudonym is Mr. X. Mr. X left a notepad with scrawled handwriting and disappeared without a trace. Wang Yao accepted the commission from his lover and went to investigate, but he did not want to be forced by the mysterious man appearing on the corner of the street to accept another commission - to kill the novelist after finding him. He also claimed that he had an informant in the police station and would be killed if he called the police. The address book that was torn up and scattered next to the phone, the suspenseful short story previously recorded in the worn notebook and the X symbol drawn by the dried blood on the last page, the hesitant answers and evasive eyes of the residents nearby, and they got to know each other as the investigation continued to deepen. People with very different personalities, clues gradually lead to the truest path, "Puppets are controlled by silk threads in human hands". This sentence appears repeatedly in the lives of every suspect. Uncover the mystery. What kind of shocking lie is hidden here?