This book is compiled and adapted based on the cases that the author personally participated in. It will take you to explore the little-known front-line police files. A serious kidnapping case that spanned several provinces suddenly fell on the head of the policeman Chen Shu from the police station. He was forced to accept the case , since then began an unusual investigation journey. If you are in the stable years and want to know the stories of those who carry the burden, then please follow me and walk into this file-like real police world.