On a rainy night in Bincheng, illustrator Lin Wan died mysteriously at home. The cause of death was strange. Criminal investigation captain Zhang Guiyuan teamed up with psychological profiler Zhang Hairui to launch an investigation and targeted the deceased's paranoid ex-boyfriend. After interrogation, the suspect was ruled out. At this time, a strange man's hair became a key clue. The real murderer and deeper conspiracy lurking in the dark are gradually emerging.
Purpose: popular science education