Two o'clock in the morning, rainy night.
Detective Silence's body was found in a suburban warehouse. He was sitting in the corner with a thin hemp rope tied around his neck, his eyes half-opened, and a very faint arc at the corner of his mouth - not pain, but a smile.
All the evidence points to one person: his partner, criminal psychologist Lin Mu.
Lin Mu has a perfect alibi. He actively cooperated with the investigation and provided clues to help the police identify the real culprit. The case was solved, the real culprit was brought to justice, and Lin Mu escaped unscathed.
Twenty years later, a scheduled email sat quietly in his inbox.
Sending time: three days before Shen Mo died.
"I'll give you my life in exchange for a lifetime of rainy nights and no peace."
He finally understood.
Silence is dead.
But the silent eyes never close.
