Through detailed analysis of on-site evidence and eyewitness testimony, Jing Haoran and his team initially identified David Jiao as the murderer's deliberate target, which was strikingly similar to the indiscriminate murder case fifteen years ago.However, the alibi of the victims' family members, including Ling Shihui, made the case even more confusing.

Li Shuquan and his wife have a good reputation and live a life without any grudges, which makes it particularly puzzling that they became the victims of this violent homicide.The investigation by Wang Jing and Cheng Lang revealed that although Li Shuquan had a conflict with the thief, the suspect was not in Hong Kong at the time of the crime, and this clue was eliminated.Jing Haoran's identification of the murder weapon further revealed the particularity and rarity of the murder weapon, which pointed to the possibility that the murderer had a special background or channels.

Yu Xingbai discovered through testing of drugs that these drugs were used to treat mental illness, which hinted that the murderer might suffer from mental illness.Later, Zeng Ziqian surfaced as a suspect, and his guilty plea seemed to bring a breakthrough to the case, but both Fan Peiqing and Jing Haoran felt that things were not that simple.Their analysis of the wounds of the deceased showed that the murderer obviously had stronger hatred when he killed Li Shuquan, which was different from the situation of other victims.

At the same time, the disappearance of Wenwen's fiancée has added new variables to the entire incident.The blood stains Yu Xingbai found at the scene indicated that the murderer may have also suffered misfortune.Through surveillance and vehicle tracking, police gradually narrowed down the suspects, but the real killer remains at large.

The whole case is full of reversals and surprises. Every clue seems to point in a different direction, but they are intertwined with each other.The police must remain vigilant and calm and continue to investigate in depth to uncover the truth behind this complex case.In the process, they not only have to face the murderer's cunning and cruelty, but also face their own inner doubts and uneasiness.