The murder can be over.
The dossier will not.
An old file of unknown origin suddenly appeared in the Linhai City Patrol Headquarters. Since then, murder cases have followed one after another.
As the investigation deepens, a patrol officer, a history assistant, a doctor of forensic medicine, and a broker who travels in both black and white are forced to join forces to track down the truth.
But they gradually discovered that all the cases were just pawns on the same game.
But what is really hidden is not the murderer.
It's history.
Purpose: History can be swept away in dust, but the truth is always worth pursuing
