Ji Zhaowu was nailed to the iron chair in the interrogation room, and his fingers were forced into the fingerprint collector. Blood stains seeped into the sensor, but abnormally three sets of fingerprints that did not belong to him were outlined on the screen - each pointing to the real culprit in an unsolved case. Standing behind the mirror and observing calmly was Wen Weilan, the chief consultant of the task force. He didn't speak, only stared at the tampered biological code in the data stream, with a hint of compassion at the corner of his mouth. When the entire police station concluded that Ji Zhaowu was a madman and a murderer, only Wen Weilan knew: these fingerprints were not a confession, but a cry for help.