Reborn in 97, I solved a cold case at the Municipal Bureau

Chapter 322 Logical Analysis
Xia Yu hesitated for a moment, then said, "Forensic Doctor Tang, should I take the report to Captain Pan first?"

Zhou Yi said directly, "No rush, your team leader Pan went to see your bureau chief."

"Oh, that's how it is."

"Officer Xia, could you please take a look at this for me? I don't want Teacher Tang to have to tell me again; she's already working so hard."

"Okay." Xia Yu quickly handed over the autopsy report.

Tang Wenli, who was sitting next to her, picked up her cup, took a sip of water, smiled slightly with appreciation, and said nothing.

Zhou Yi carefully examined the autopsy report. It wasn't a formal report, but it was more detailed than the preliminary report, probably because Pan Hongjie had been pressing for it.

Judging from Tang Wenli's exhausted expression, she must have been working non-stop on the autopsy since yesterday.

The report states that a preliminary autopsy has been performed on the male corpse, but not on the female corpse.

It contains several important pieces of information.

First, the wound on the woman's back perfectly matches the shape of the blade of Li Youqiang's hidden knife.

In other words, it can be confirmed with 100% certainty that this knife is the murder weapon used to kill the woman.

However, whether the stab wound or the ligature mark on the neck was the fatal injury still needs to be confirmed by an autopsy. But based on reasonable inference, it should be the stab wound.

Second, male semen was found inside the female corpse, and it was from two men.

Given that the female corpse had no underwear on her lower body, this result was not unexpected; Zhou Yi had vaguely guessed it at the time.

However, the fact that semen from two people was found inside the body, rather than three, is quite intriguing.

Because the local area lacked DNA technology and the time interval was too long, Tang Wenli was unable to analyze the extracted samples using normal technical means.

In other words, it can only be confirmed that there were two people, but it cannot be determined whether it was the male deceased and another person, or Fu Daqing and Li Youqiang.

Third, the cranial sutures of the male corpse were completely closed. This condition usually occurs after the age of fifty. Of course, the report also clearly states that there are significant individual differences, so this is only for reference.

However, based on this, the initial age range has been narrowed down, making it a better match for the car owner, Zheng Guangming.

Fourth, there were no external injuries on the male corpse. After autopsy, it was confirmed that the cause of death was sudden cardiac death, and the deceased had relatively severe coronary artery stenosis.

Therefore, the male victim died of illness, not murder.

In addition, Tang Wenli detected two drug components in the male victim's body, one of which was nifedipine, a common antihypertensive drug.

Another option is sildenafil, commonly known as Viagra.

Of course, the autopsy did not find any necessary link between sildenafil and the deceased's sudden cardiac death.

The rest is just some routine autopsy information.

Seeing that Zhou Yi had finished reading, Tang Wenli asked, "What are your thoughts?"

Zhou Yi said, "Teacher Tang, based on your autopsy report and the information that Captain Pan and his team just found out, we can basically conclude that the male victim should be Zheng Guangming, a local businessman who is fifty years old this year."

"The deceased woman and he likely had an improper relationship. Considering the prevalence of chaotic private lives among local business owners who made their fortunes in the aquaculture industry, it is estimated that she was his mistress."

"The fact that Zheng Guangming took aphrodisiacs suggests that there is a high probability that he had sexual intercourse with the female victim."

Tang Wenli asked curiously, "Why couldn't he have died before the relationship even started?"

"If Zheng Guangming died suddenly before or during the sexual encounter, the female victim would definitely call for emergency medical assistance immediately. Even if the perpetrator attacked and took both of them away during the encounter, the ambulance would still call the police if they found no one at home when it arrived. So it could only happen afterward."

“At Zheng Guangming’s age, he would definitely feel physically exhausted after having sex and fall asleep immediately, otherwise he wouldn’t have needed medication. He probably died suddenly during his sleep, and then the two murderers broke in, killed the female victim, and buried the body. As for the details, we can’t make an accurate deduction right now; we need to find the original crime scene and conduct an investigation. The red car that was found today may not have been driven by Zheng Guangming, but rather bought by him for his lover.”

Xia Yu, who had been listening intently, finally asked, "Why did Fu Daqing and Li Youqiang kill Zheng Guangming?"

"Judging from the social relationships of Fu and Li alone, they should have no connection with Zheng Guangming, and the two of them did not have any complicated emotional entanglements, ruling out the possibility that they had any connection with the female victim."

Zhou Yi said seriously, "So the most likely explanation is that he hired someone to kill him."

"Hired someone to kill someone?" Xia Yu and Tang Wenli were both somewhat surprised.

The question that Zhou Yi had been struggling with gradually became clearer through the clues that emerged over the past two days.

At first, he always believed that Fu Daqing had brought Li Youqiang along to seek revenge, and that the target of the murder was Jiang Wei, who had swindled him out of his entire fortune five years ago.

So he could never understand how Fu Daqing knew Jiang Wei's whereabouts more than five years later.

Furthermore, Zheng Xiaojun confessed that Fu Daqing paid him to help kill someone, which aligns with Li Youqiang's boast to his family about earning 10,000 yuan.

Therefore, Li Youqiang was not acting out of loyalty to his friend, but was hired by Fu Daqing.

However, Zhou Yi had only confirmed that Li Youqiang was hired, but he hadn't considered that Fu Daqing was also hired, because he thought that Fu Daqing's goal in coming to Anyuan was Jiang Wei.

Even after the two bodies were discovered in Xiaoqiushan Park yesterday, Zhou Yi actually had doubts about the possibility that Fu Daqing and Li Youqiang had killed them.

The reason is simple: the Tibetan knife that was found nearby. Zhang Xianglan said that Li Youqiang really liked that Tibetan knife, considering it an antique, and wouldn't let anyone else touch it.

It's illogical to leave such a valuable knife, which could easily expose one's identity, lying near a burial site.

Even if it were dug out of the burial ground, it would still make more sense.

He even suspected that someone wanted to use the Tibetan knife to frame Fu and Li, hoping to kill them with a borrowed knife.

It may have been stolen from Li Youqiang, or Li Youqiang may have accidentally lost the knife.

However, after discovering the red car today, Zhou Yi analyzed to Pan Hongjie that the two groups of murderers could not be the same group of people.

Then, the existence of Jiang Wei was confirmed at the auto repair shop, as well as the possibility that the car was the primary crime scene where Li Youqiang was murdered, and that Li Youqiang's body was hidden in the trunk.

This made Zhou Yi break out of her previous fixed mindset.

Li Youqiang died later than Zheng Guangming and the other man, so killing them couldn't possibly be related to seeking revenge against Jiang Wei.

Given Zheng Guangming's wealth and complicated relationships with women, the story of hiring someone to commit murder becomes plausible.

However, it remains to be further investigated who exactly paid Fu Daqing and Li Youqiang, two outsiders, to kill Zheng Guangming.

As for Jiang Wei, he must have encountered Fu and Li by chance after they committed the crime, or he found the man's whereabouts through other channels and then carried out his revenge.

Once a murderer has committed murder, they develop a criminal mentality where killing one person is the same as killing several. This is a kind of valve effect, like a water pipe with its valve turned on.

However, most non-psychotic killers rarely have sufficient motive to commit continuous crimes.

Once they start committing crimes repeatedly, they will essentially develop into serial killers.

Fu Daqing had a strong motive for committing the crime: revenge.

However, some unexpected events may have occurred, leading to Li Youqiang being killed and Fu Daqing escaping.

I pray that Jiang Wei can be captured successfully tomorrow, so that we can find out what happened through interrogation.

The overall picture of the case has become much clearer.

Zhou Yi didn't reveal all his thoughts, but instead gave a concise analysis, which still left the two people in front of him speechless.

Zhou Yi said, "Oh, by the way, Professor Tang, Fu Daqing's ex-wife said he suffers from oligospermia. Could you see if we can start from this point to confirm whether Fu Daqing sexually assaulted the female victim?"

Tang Wenli shook her head: "If the sample is within 72 hours of being removed from the body, it is still possible to barely test and distinguish the sperm viability. But after so much time, being able to distinguish that they are from two different people is already the limit."

"Okay, we'll definitely go with your opinion on this."

Tang Wenli stood up and stretched her neck, saying, "Okay, I've heard enough about the case analysis. You guys go ahead and get busy. I need to hurry up and continue with the autopsy. Ugh, I really don't want any more work. It's better to have a more relaxed job."

Zhou Yi and Xia Yu left the forensic room with the autopsy report.

On the way back, Xia Yu couldn't help but say, "Officer Zhou, no wonder Captain Pan told me to learn from you. Listening to your analysis of the case just now gave me a sense of sudden enlightenment. This case had us completely lost before."

Zhou Yi said a few words of modesty, and then saw Chen Dejiang come out of the office and ask them, "Where is Captain Pan?"

"I went to see Director Guo."

“I just contacted Zheng Guangming’s company, and they said that Zheng Guangming hasn’t been to the company for more than a month, and they don’t know where he went.”

Zhou Yi frowned: "The boss has been missing for over a month, and no one has reported it to the police? Where is he at home?"

"I called, but no one answered."

It's highly illogical that a big boss has been missing for over a month without anyone reporting it to the police.

Zhou Yi said, "It seems we should go and investigate."

As they were talking, Pan Hongjie strode over, his face even more grim than when he left.

It seems that he probably didn't hear anything good from his superiors.

However, Pan Hongjie didn't say much. At this time, morale is the most important thing, and repeatedly emphasizing pressure may backfire.

After learning about the autopsy results and the situation of Zheng Guangming's company, Pan Hongjie convened a swift and efficient short meeting with everyone.

The core content boils down to two points.

First, in tomorrow's operation to arrest Jiang Wei, all personnel will be armed, and we must capture him alive.

Second, the investigation will focus on Zheng Guangming's case.

By the time the meeting ended, almost another day had passed, and it was getting dark outside.

Pan Hongjie waved to Zhou Yi and said, "Zhou Yi, you don't need to participate in tomorrow's operation to arrest Jiang Wei."

(End of this chapter)