Murder Profile: the Final Chapter of Her Battle of Wits with Him

In an abandoned laboratory on a rainy night, Su Chenbi's high heels ran over the broken glass, and the flashlight beam swept across the wall - the words "human nature is inherently evil" written in red paint, the curvature of the strokes were exactly the same as the ten-lecture lesson plan on criminal psychological profiling she wrote on the blackboard three years ago. "Professor, the skin tissue in the deceased's fingernails matched the DNA library of the unsolved case seven years ago." Trainee profiler Lin Xiaotang's voice trembled. A corner of Su Chenbi's white coat was blown up by the wind, and she stared at the deceased's clenched left hand - inside was half a piece of melted dark chocolate, the same brand as the box she gave to her best friend Qin Jin seven years ago. "Captain Gu," when she turned around, Gu Yanzhou, deputy captain of criminal investigation, was leaning on the door frame, twirling the evidence bag with his fingertips. Inside was half a fingerprint with coffee stains. "You said that the flaw in a perfect crime is hidden in the murderer's most proud 'artwork'." Gu Yanzhou suddenly put away his cynical smile, and the pen tip hit the "abandoned laboratory" position on the scene map: "But this time, his artwork is you." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.