Her razor-sharp profiling pen can puncture lies, but it cannot cut through the bloody case from a rainy night seven years ago. Qi Siyu uses criminal psychology to reconstruct crime scenes, but she cannot piece together the shattered body of her best friend. When evidence from a new series of murders eerily overlaps with the old case, everything presses her to confront the fatal mistake: the obstruction by the old-school detectives on the criminal investigation team, the forensic medicine student’s deliberately concealed reaction of vomiting, and the yellowed case file slipped to her by her father’s former colleague in the dead of night. The flaw circled in red on her old profiling report was the very trap the real killer had carefully laid. And in the morgue cabinet, the latest victim’s fingernails still hold traces of the same moss spores found on her best friend.
