**

"The Knot" is not only a story about chasing a murderer, but also a mirror that reflects the light and darkness of human nature. When Chen Mo finally stood in front of his sister's grave, he said goodbye not only to the souls of his close relatives, but also to himself who had been imprisoned by hatred for thirteen years. And the new case alarm sounded again - the road to justice never ends. "Some knots tie up corpses; some knots tie up living people. And we have to untie them all."