Shen Yan joined Nancheng Criminal Investigation and came into contact with many old cases that had been "perfectly closed". Each case seems to have no connection, but there are common secret marks left at the scene: vacant houses, water damage from unknown sources, and blank papers that appeared in advance. The mysterious disappearance of his sister many years ago is a knot in Shen Yan's heart and the reason why he joined the police force. When the layers of forged suicide and disappearance files were reopened, the dark chain buried deep under the old city for twenty years slowly emerged. Lies can seal the case file, but the traces will remember all the suffering; revenge is not justice, only the truth is the belated redemption.
Concept: When the truth is buried artificially, the subtle traces are the silent testimony of the deceased. This book explores the boundary between revenge and justice, and reveals the complexity of human nature beneath lies. Even though everyone is silent, there are still people who insist on pursuing the forgotten truth.