Mysterious Diary: Zhou Yuqing found an old book called "Diary" in a second-hand bookstore. A strange reminder was written on the title page, asking readers to read it as the author. Only the murderer knew the whole process of the case.
Double life: As she read, Zhou Yuqing gradually became immersed in the world of the diary writer "Lin Mo". The book describes the escalation of the conflict between Lin Mo and his neighbor Professor Zhang, and Lin Mo's unusual obsession with Professor Zhang's wife Chen Wen.
The murder occurred: The diary recorded in detail the entire process of Lin Mo's murder of Professor Zhang, including how to sneak in, details of the murder, and cleaning up the scene. Zhou Yuqing found that she had vague "memory" of these details.
Identity confusion: Zhou Yuqing was horrified to find that the characteristics of the murderer described in the book matched her own, and her name was clearly written on the last page of the diary, implying that she was the "scapegoat" of the murderer Lin Mo.
Reality distortion: Zhou Yuqing's life began to appear similar to that described in the book. The quarrels in the neighbors and the appearance of blue gloves made her unable to distinguish the boundary between reality and fiction.
Concept: reality and fantasy