Chasing the Murderer in Hundreds of Cases

My name is Shen Li, and I used to be a member of the criminal investigation team. The day I left the police station, no one knew that what I took away was not the files, but the truth that I had not told. Under this glamorous modern city, there are countless moldy corridors, closed doors, and silent murderers. Behind every door, there might be a cold corpse lying; In every corner of daily life, there may be a long-planned murderous intention dormant. Neighborhood grievances, workplace strife, love betrayal, greed for money and life, old unsolved cases, serial ghosts... One hundred murders, one hundred human skin masks, one hundred segments of darkness hidden in the smoke of fireworks. I don't have superpowers, I only believe in traces, details, and the evil that cannot be hidden in the deepest part of people's hearts. I pushed open one door after another, prying open one lie after another, but in countless cases, I encountered the same lingering shadow. Some people say that I am chasing the murderer. Only I know—— I'm tracking down a city's ultimate secret that has been hidden for decades. Hundreds of cases are over, and the real culprit may not be caught. Because the most terrifying thing is never the killing knife, but the devil hiding next to you and living a normal life like you.