The male protagonist Lin Feng is a highly intelligent forensic doctor with a strong sense of justice. Together with a group of righteous partners, he solves various bizarre cases. The types of cases include secret room murders, serial murders, poison mysteries, bone mysteries, accidental fake deaths, high-tech crimes, etc. Each case integrates professional knowledge of forensic pathology and trace testing. , The reasoning process is progressive, the suspense is intertwined, and there are hidden foreshadowings between the unit cases, which finally connects a main line throughout the book: an unsolved forensic case many years ago is closely related to Lin Feng's past. The murderer has always been lurking in the dark, looming in each unit case, and finally ushered in the final showdown in the finale.
