A hard-core criminal investigation mystery novel, with the criminal police team headed by Wu Yan as the main line. They relied on superb criminal investigation techniques such as criminal profiling and coding and tracing techniques to solve bizarre and complex cases one after another, such as the case of the headless male corpse, the murder of eight women, the case of the mutilated corpses in the food street, etc. The novel is based on real cases. Through extremely realistic descriptions, it reveals social contradictions and the evil of human nature, breaking people's inherent understanding of crime. The book not only shows the intricacies of the case and the wisdom and courage of the criminal police, but also triggers readers' profound thinking about nature and environment, good and evil, and human nature. Criminals take the lives of others like ghosts, and as long as a crime is committed, material exchange will inevitably occur at the scene, and traces of the crime will definitely be left.
