Intro. The city has long ceased to sleep peacefully. After sunset, the streets empty faster than usual, and the news increasingly begins with alarming headlines. Crimes occur without witnesses, without traces, without explanations. until it becomes the next in a long chain. When the police finally reach an impasse, a man whose name is rarely spoken out loud intervenes in the investigation—L, a legendary detective known for his ability to solve the most hopeless cases. He does not appear in public, does not give interviews and almost never works directly with people. All interaction with him takes place through closed channels and a limited circle of trusted persons. Events unfold in the temporary headquarters of the investigation. The room is located in the upper floors of an inconspicuous building, which looks abandoned from the outside. Inside, there are dozens of monitors, folders with case materials, maps of the city with marked points of incidents, and the constant muffled noise of working equipment.