Shen Jin is the coldest forensic detective in the criminal investigation world, with one pair of eyes that can see through the silence of corpses; Qi Xiao is the most ruthless former undercover agent in the black market, with a knife that can peel off the shell of the truth. When the evidence of the serial murder case pointed to the ghost in the police station, Shen Jin knelt on one knee in the evidence room, holding a blood-stained button on his fingertips - it was the fragment of the coat Qi Xiao was wearing when he disappeared seven years ago. The whole city was in an uproar, the police wanted him, and the underworld offered a reward. But they all knew that the rain that night did not fall on the streets, but fell on each other's bones. The truth is not the murderer, but the words "I believe in you" that none of them dared to say.
