Not long after Xu Lang called Liao Xi over to help, Fan Yang also came back after surveying the scene.
"What are the results of the on-site investigation?" Xu Lang asked.
After Fan Yang put down the tool box, he picked up a cup of cold tea on the table and drank it in big gulps.
After drinking, he raised his hand and wiped the corner of his mouth casually, and then said: "Although the wiring of the bathroom switch has been burned by the high temperature, there are still many traces left. According to the investigation results, the wiring has indeed been tampered with.
As long as a person touches the switch with his or her hands or feet, he or she will get an instant electric shock, and a strong electric current will pass through the human body instantly, causing death."
"Have fingerprints been collected at the scene?" Xu Lang asked.
Fan Yang shook his head helplessly and said: "The murderer wore gloves when he committed the crime and did not leave any fingerprints at the scene."
"What about the shoe prints?"
"The site was damaged and only half of the shoe prints were collected."
"Half a shoe print?" Xu Lang looked at Fan Yang in surprise.
Fan Yang nodded and said: "Yes, there is only half of it. It was left by rubber shoes. Although there is only half of it, based on the pattern of the shoe print, it is exactly the same as the one left by Nie Fang's family at the scene."
"Is it the man in black again?" Xu Lang frowned.
Fan Yang knew what Xu Lang was thinking, and she nodded.
Xu Lang fell into deep thought. The seventh set of shoe prints was found at the scene of Nie Zhan's case, but the owner of this set of shoe prints has not been found yet. And the same pattern of shoe prints was also found at the scene of Tang Zhiyong's murder? Could it be that
Is this a coincidence?
Xu Lang shook his head and thought it was impossible. Whether it was Nie Fang's villa or Tang Zhiyong's home, they were both places where rich people lived. The people who came in and out of their homes were either rich or noble. It was unlikely that such cheap shoes would appear.
, could it be a worker?
Xu Lang shook his head again. If the shoe prints that appeared in Nie Fang's house were left by workers in his machinery processing factory, it would barely make sense. After all, people who work in factories generally wear cheaper shoes.
Yes, but it stands to reason that it is impossible for factory workers to know where their boss lives. Even if they knew, they would not be able to get in. What's more, Tang Zhiyong is the senior leader of Fuyuan Group, and he knows people who know him.
He is not an ordinary migrant worker, and he is even less likely to let someone wearing such cheap shoes enter his room.
This is not because Xu Lang discriminates against those who wear cheap shoes, but that everyone's social circle is determined by their status and status.
"Who is this man in black?" Ding Haoqiong asked from the side.
Yes, who is this man in black? He once appeared at the scene of the two murders of Nie Fang and Bu Pengfu. If the seventh set of shoe prints in Nie Fang’s house were left by this man in black, then Tang Zhiyong
The shoe prints at home should have been left by him, but these shoe prints were not found in Bu Pengfu’s home. Why is this?
Three murder cases occurred in succession. It seemed that each murder case was a suicide or accidental death.
Nie Fang committed suicide by climbing into the crematorium, Bu Pengfu committed suicide with strong sulfuric acid, and Tang Zhiyong died by electrocution. It seems that their deaths did not look like murder, but the cause of Bu Pengfu's death has been revealed.
It was determined that he choked to death on his own vomit, and his body was corroded by strong sulfuric acid after death to create a fake suicide scene. In Tang Zhiyong's case, although he died accidentally due to electric shock, the switch circuit was
Someone had tampered with it. It was obvious that this was a long-planned murder. So, did Nie Fang commit suicide? Or was he murdered? Could it be that the cause of Nie Fang's death is the same as Xu Lang's previous hypothesis?
Xu Lang wasn't sure.
Xu Lang told Ding Haoqiong what he was thinking. After Ding Haoqiong listened, he covered his fist with one hand, put it to his mouth, frowned, thought for a while, and said, "Have you found a
question?"
"What's the problem?" Xu Lang asked.
"Our investigation results from the time of Nie Fang's case to the present show that Nie Fang's case is exactly like the fact that he owed huge foreign debts and was unable to repay them. In the end, he chose to take his children and wife with him.
Those who died together seemed to be prepared suicides." Ding Haoqiong said.
Xu Lang and the others nodded. Indeed, until now, Nie Fang's case still cannot be determined, and there are many doubts that cannot be explained.
"However, in Bu Pengfu's case, not long after the incident, we found out the cause of the other party's death. We knew that Bu Pengfu's death was accidental. After Bu Pengfu's death, the murderer faked the scene of his suicide."
"In Tang Zhiyong's case, only a few hours have passed since the incident. We know that his death was not accidental, but was deliberately murdered. Don't you find it strange?"
After hearing what Ding Haoqiong said, Xu Lang frowned, looked at Ding Haoqiong and asked, "What do you want to say?"
"Have you noticed that the murderer's methods of committing crimes are gradually deteriorating?" Ding Haoqiong looked at Xu Lang and said.
"Deterioration of modus operandi?"
Xu Lang pondered.
After Ding Haoqiong asked, Xu Lang also discovered this problem. From Nie Fang's seemingly perfect suicide case, to Bu Pengfu's suicide case, and now to the accidental death case of Tang Zhiyong, as the case unfolds
The frequency of murders is getting faster and faster, and the murderer's methods of committing crimes are not becoming more and more proficient, but are gradually deteriorating.
If Bu Pengfu's case was because Bu Pengfu choked to death on his own vomit, which was an accidental death, and this result disrupted the murderer's crime plan, then when he went to Bu Pengfu's house, Bu Pengfu
Pengfu should be dead. Since the other party is already dead, there is absolutely no need for him to fake the illusion that Bu Pengfu committed suicide by using strong sulfuric acid. Firstly, the other party is already dead, so there is absolutely no need for him to do so. Secondly, the murderer did it.
The more things happen, the more clues are left at the scene.
But,
The murderer still chose to do this, why? Every murderer did everything at the scene with a purpose. So, what was the purpose of the murderer who forged the scene of Bu Pengfu's murder?
There are only two possibilities.
First, the murderer had a deep hatred for Bu Pengfu, and he did this just to vent his anger.
The second is to deliberately fake the scene, interfere with the police's thinking of handling the case, and lead the police into the trap.
Xu Lang thought of these two possibilities and felt that there might be both possibilities. Since the murderer chose such a cruel method when killing Nie Fang, and if Bu Pengfu hadn't died accidentally, he might have died.
When he was alive, he was in a deep coma and was put into strong sulfuric acid by the murderer. He was corroded bit by bit by the strong sulfuric acid and died. If it weren't for the strong sulfuric acid that couldn't completely corrode the human body, and if it weren't for the forensic doctor who found out that the deceased Bu Pengfu hadn't been completely corroded.
If vomit is found in the corroded trachea, then Bu Pengfu's death may really make the police think that Bu Pengfu committed suicide using strong sulfuric acid. If this is true, then the murderer's purpose will be achieved.
.
If the murderer's plan to kill Bu Pengfu is the same as Xu Lang guessed, then what about Tang Zhiyong's case?
Compared with Nie Fang being burned to death by high temperature in the crematorium and Bu Pengfu being corroded to death bit by bit in strong sulfuric acid, it seems that Tang Zhiyong's death was too simple.
Although people who die from electrocution will experience a lot of pain during their lifetime, the pain the human body endures in the strong current is actually very short-lived. People will die in less than three minutes. Compared with Nie Fang and Bu Pengfu,
When the murderer killed Tang Zhiyong, his technique seemed to be too rough. Although the murderer did not leave fingerprints at the scene, he not only left shoe prints but also left a fatal flaw that the wiring had been tampered with. This made some
An experienced detective will know what's going on at a glance.
Judging from the cases of Nie Jianyuan and Bu Pengfu, the murderer is a person with a strong sense of counter-inspection. His thinking is very quick and the method of committing crimes is very cruel. Logically speaking, he should not leave any trace in Tang Zhiyong’s case.
There are so many loopholes, what's going on? Is it a copycat crime?
Xu Lang expressed his thoughts. After Ding Haoqiong listened, he shook his head and said: "It shouldn't be a copycat crime. Whether it is Nie Fang's case or Bu Pengfu's case, we have not disclosed the details to the media. We know
There should be very few people killed by these two people, and it is impossible for copycat crimes to occur so quickly."
Xu Lang shook his head and looked at Ding Haoqiong. Immediately, Xu Lang thought of a possibility. Could the murderer of Nie Fangbu Pengfu be different from the murderer of Tang Zhiyong?
When Xu Lang raised this question, Ding Haoqiong was stunned, and he did not dare to give a conclusion easily.
After several people were silent for a while, Ding Haoqiong looked at Xu Lang and suddenly asked: "By the way, how did you know that the next person to be killed was Tang Zhiyong?"
Hearing Ding Haoqiong's question, Xu Lang briefly stated the hypothesis that he was about to say but did not say.
After listening to Xu Lang's hypothesis, several people all showed expressions of disbelief. They all felt that Xu Lang's hypothesis was too bold and unbelievable.
Fan Yang said: "Team leader, is this unlikely?"
Xu Lang hadn't spoken yet, but Ding Haoqiong frowned and said, "It's not impossible. Perhaps the team leader's hypothesis is the one closest to the truth. Isn't Tang Zhiyong dead?"
Indeed, whether it is Nie Fang, Bu Pengfu, or Tang Zhiyong, who died not long ago, it seems that they are all related to the bankruptcy of Zhou Yuanjia's company and his suicide twelve years ago.
"Now that Nie Fangbu, Pengfu and Tang Zhiyong are both dead, if it is true as the team leader assumed, then wouldn't the next victim be Tang Chundong? Where is she?" Fan Yang asked.
Xu Lang turned his head, pursed his lips and said, "It's inside."
"Then what should we do next?" Fan Yang asked subconsciously.
Xu Lang thought for a while and said: "Continue to look for Nie Wenxing. If he is really not dead, then he must know something. If you find him, you may know the truth about Nie Wenxing's plan."
Fan Yang nodded, then looked at Xu Lang and asked, "But even if we find Nie Wenxing, we can only find out the truth about Nie's plan. What about the cases of Bu Pengfu and Tang Zhiyong?"
Hearing Fan Yang ask this, Xu Lang also fell into silence.
Suddenly, Xu Lang remembered something. He remembered the casino run by Brother Hua that Fatty once mentioned. He remembered that Lu Xing once said that this casino was opened by a foreigner named Jack and Zhou Yuxue.
Nie Fang once visited this casino before his death. Since he can't find any other breakthrough now, can he start from the casino?
Thinking of this, Xu Lang looked at Fan Yang and asked, "By the way, where is Du Ziqiao from the Second Criminal Investigation Team now?"
"After he inspected the scene with us, he went to the Public Security Bureau. What happened?" Fan Yang looked at Xu Lang in confusion.
Xu Lang did not answer Fan Yang's question, but directly dialed Tian Yongchun's number.
"Hey, Tian Bureau, I need your help."
"How can I help? Just tell me directly."
"Inform the Criminal Investigation Team 1 and 2, as well as the Criminal Investigation Detachment in the north of the city, to conduct a surprise inspection of an underground casino in the north of the city."
Tian Yongchun was silent for a moment on the other end of the phone, and then said: "Is the casino related to the case that your CSY is currently investigating?"
"have."
"Okay, I will notify them to assist you in CSY."
After Xu Lang hung up the phone, he said to Ding Haoqiong and Luo Jiayan: "Follow me to the scene."
Ran
Finally, Xu Lang turned to Fan Yang and said, "You stay in CSY and keep Tang Chundong under my watch. Don't let her leave here."
Fan Yang nodded.
After Xu Lang arranged the mission, he took the firearm and left CSY with Ding Haoqiong and Luo Jiayan.
————
Just as Xu Lang and the others walked out of CSY, Xu Lang saw a woman walking towards CSY carrying a large bag of things.
Xu Lang and Ding Haoqiong were both stunned for a moment when they saw this woman. Xu Lang and Ding Haoqiong knew this woman and had met them once. She was Tang Chundong's personal secretary Chen Huan.
After Chen Huan saw Xu Lang and Ding Haoqiong, he walked a few steps quickly, came to them, and asked with a smile: "Officer Xu, Officer Ding, hello."
"It's so late, what are you doing here?" Xu Lang asked with a frown as he looked at the large bag of food in Chen Huan's hand.
"Oh, that's it. I just received a call from our President Tang. She said that she was at your CSY and didn't have dinner. She was hungry and asked me to bring her something." Chen Huan explained with a smile.
Xu Lang stared at Chen Huan for a while, then nodded and said, "Then go in."
"Thank you, Officer Xu."
Chen Huan nodded quickly and smiled.
Xu Lang waved his hand. He was going to meet the people in the underground casino for a while, and to meet Deng Feizhang, who was nicknamed Brother Hua. He didn't pay attention to the sudden visit of Chen Huan.
After Xu Lang and the other three left CSY, Xu Lang came to the car and sat on the driver's seat, while Ding Haoqiong sat on the passenger seat. As for Luo Jiayan, she did not get on the car. She chose to ride her motorcycle.
When they got out of the car, Xu Lang had already told them the address of the casino. By the way, Xu Lang also told Du Ziqiao, the Criminal Investigation Team 1, and the Captain of the Chengbei Criminal Investigation Detachment of the casino's address via text message on his mobile phone, so that they could be prepared.
After getting on the bus, Xu Lang and the others left CSY and headed towards the Chengbei Casino.
————
Chen Huan carried a large bag of food and watched Xu Lang and the others drive away. Her bright eyes narrowed slightly and she didn't know what she was thinking.
After Xu Lang and the others were completely gone, she walked into CSY carrying her things.
After Chen Huan entered CSY, she found Fan Yang and briefly explained her purpose of coming to CSY to Fan Yang.
Fan Yang learned that Chen Huan had Xu Lang's permission, so he took her to the No. 1 interrogation room. After all, Tang Chundong was not a criminal suspect. She was now the subject of special protection by the police, and Chen Huan was her personal secretary.
Naturally, you won't embarrass the other party.
Fan Yang took Chen Huan to the inquiry room No. 1. After a few words of explanation, she returned to her desk and continued working.
After Chen Huan walked into the interrogation room, he placed the food in front of Tang Chundong.
After Tang Chuntong saw Chen Huan, he frowned in displeasure and said, "Why did you come here? I'm almost starving to death."
"I'm sorry, Mr. Tang, there's a traffic jam on the road. I'm going back and forth. I'm really sorry. I..."
However, before Chen Huan could finish speaking, Tang Chundong waved his hand impatiently, opened the bag, took out the food and started eating.
Tang Chundong was starving for a long time. Originally, she thought she would spend a wonderful and romantic night with Xu Lang tonight. Unexpectedly, after seeing Xu Lang, she was brought here without even eating dinner.
.
Chen Huan brought Tang Chundong's favorite food. Although the food was not very expensive, it was very exquisite. Tang Chundong enjoyed eating it, while Chen Huan stood aside and watched where Tang Chundong was eating.
, the corner of his mouth curled up.
————
When Chen Huan walked into the inquiry room, two more people came from CSY, one large and one small, to be precise, two women.
Those who came here were none other than Ning Yanran, deputy director of the Municipal Public Security Bureau, and Xiao Yueyue, carrying a lot of food in their hands.
Ning Yanran is no stranger to CSY members. After seeing Ning Yanran, Fan Yang quickly came over to say hello.
"Ning Ju, why are you here?"
Ning Yanran looked around for a week and did not see Xu Lang. She said with some confusion: "I know you are still working overtime. I guess you haven't had dinner, so I will bring you some food."
"Thank you Ning Ju." Fan Yang said with a smile.
Ning Yanran shook her head and said nothing.
At this time, Xiao Yueyue raised her head, looked at Fan Yang and asked: "Sister police officer, where is my father?"
"Who are you?" Fan Yang noticed Xiao Yueyue at this moment and asked curiously.
"Is this your daughter?" Fan Yang raised his head and looked at Ning Yanran and asked.
Ning Yanran shook her head and said, "No, this is your team leader's daughter, her name is Xu Yueyue."
"Sister, where is my father?" Xiao Yueyue asked, still raising her little head.
Fan Yang knelt down, stretched out his hand, held Xiao Yueyue's arm, and explained: "Your father has gone on a mission."
"Is it dangerous?" Xiao Yueyue asked worriedly.
"No." Fan Yang said with a smile.
"oh."
"how old are you?"
"Six years old."
"Have you gone to school?"
"go to school......"
However, before Xiao Yueyue finished speaking, there was a sudden sound of something falling to the ground in the No. 1 interrogation room, followed by a woman's heartbreaking scream.