share time: 2025-10-24 12:30:11
Five years ago, trainee forensic scientist Jiang Xin was suspended and left the police force for insisting on tracking the "invisible killer" in a serial case. However, Xu Xiao, Captain Qin, who promised to "stay with her until the end," lost contact that night. Five years later, Jiang Xin returns as a criminal psychology expert. As soon as she enters the市局 conference room, she sees Xu Xiao sitting at the main seat—he’s still as sharp as ever, with a scar extending from his left neck to his collarbone, and her old ceramic cup still on his desk. The new victim’s fingernails hold the DNA of the killer from five years ago. Xu Xiao’s old couple photo in the safe and the half silver ring under Jiang Xin’s pillow tear at their unspoken regrets. When the killer lures Jiang Xin into a trap, Xu Xiao rushes over and shouts, "I never gave up on you back then." Those truths and confessions buried by time finally flood into each other’s world as they pursue the killer.
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