Detective: Open your eyes, I am handcuffed in the interrogation room.

Chapter 637 Qian Dakang Enters Police Sight

Chen Yi did not go home because Fang Shuyu needed a quiet environment to rest. He booked a new room in the hotel where Teng Dabin and Su Ying were staying and prepared to take a nap for a few hours.

After staying up all night, sleepiness quickly came over him. Before falling asleep, Chen Yi went over the entire case in detail in his mind.

Once the time of death of the victims was known, the course of the crime became clearer.

Why did the two children and Ji Jingfu die within 28 hours of each other? Of course, they couldn't have died at the same time. Even the most skilled forensic doctors couldn't pinpoint the time of death to the minute, so errors were inevitable.

Twenty-six hours, twenty-eight hours, twenty-eight hours, twenty-eight hours.

The order of death of the four victims was: Ji Jingfu's wife died first, then the two children, and finally Ji Jingfu who returned.

Let’s first assume that the murderer was not targeting Ji Jingfu.

On the day of the crime, the murderer sneaked into the yard (or knocked on the door) immediately after Ji Jingfu left home, threatened the lives of their two children to force Ji Jingfu's wife to give up resistance, and then tied her up.

Ji Jingfu’s wife took care of it. The two children were not a threat and could be controlled in a short time (or the two children were taking a nap).

Afterwards, the murderer raped and killed Ji Jingfu's wife, and then attacked their two children. When everything was over and he was about to leave, he ran into Ji Jingfu who had just returned early. A fight broke out between the two sides, and Ji Jingfu was eventually stabbed four times (or the murderer did not leave the scene and was waiting for Ji Jingfu to return).

The only physical evidence left from the entire process was the clothing fibers found inside Ji Jingfu's fingernails.

The current investigation is being monitored by Lu Zhengkai, so Chen Yi can think more deeply and further ahead.

What ifs are scary.

Assuming this case is the beginning of a serial case, what will happen in the future? More women or children are killed, and the murderer's methods become more and more skilled, from four stabs to one stab, and the scope of the crime spreads from Xintou Town to the entire Yangcheng.

Chen Yi was not imagining things, this possibility definitely existed, because the murderer could be so cruel to the child, which showed that this person had no empathy, was cold-blooded and indifferent, and lacked emotional perception.

Lack of empathy is one of the important characteristics of serial killers. It is difficult to stop after the first time.

"If it is a serial crime, the murderer would not choose an unfamiliar area for his first crime, nor would he choose a completely unfamiliar target. He would at least have seen the target before. So his residence must be within a three-kilometer radius of the crime scene."

"A radius of three kilometers..."

The map flashed in his mind, and what Chen Yi could see was Xintou Town and the national highway outside Hongzhong District.

In the dynamic picture, buildings rise from the ground, roads extend like lines to separate the buildings, pedestrians and vehicles appear out of thin air, and the silent hustle and bustle can be seen from above.

The location of the crime scene is like a bright moon in the night, always shining in the picture. The line extends out and spreads within three kilometers. Every building at the end of the line may be the suspect's residence.

"The person who is with the child every day is Ji Jingfu's wife. The places where the three people appeared many times are likely to be the suspect's daily activities."

"Even though the person is dead, we can roughly reconstruct the situation through surveillance and interviews, but we cannot determine the suspect's distinctive features. Serial killers are usually very good at disguising themselves."

When the map disappeared and the child's body appeared in his mind, Chen Yi suddenly felt uneasy and the case must be solved as soon as possible.

When he opened his eyes, it was eleven o'clock in the morning. Chen Yi sat up from the bed, found his mobile phone and checked it, but there was no missed call.

At this point, the visit had been going on for several hours.

After washing up, the special case team gathered and had a quick lunch, the six of them rushed to the Municipal Bureau.

Lu Zhengkai is in good spirits, and I don't know if he has slept at all. As an experienced criminal policeman, staying up late is also experience. This is only the first day, and the fatigue is not enough to reach the edge of explosion. The entire task force is currently in the most passionate stage.

However, as time goes by, everyone will only get more and more tired. This is also one of the reasons why there are golden 72 hours for solving cases. Not only are there fewer visible clues and the suspects' mentality becomes more stable, but the fatigue of investigators will also cause breakthroughs that should have been discovered to slip away due to mistakes.

Chen Yi brought a cup of coffee to Lu Zhengkai, who drank half of it like water, and then said, "Captain Chen, the suspect spent a lot of time on the two children. From the autopsy report, there are more traces left than on Ji Jingfu's wife, which shows that in his eyes, children and adult women are different...

To put it bluntly, he's more interested in children than adult women, which is not a good sign."

After saying this, he glanced at Su Ying. It seemed that the forensic doctor from the special case team had already dictated the autopsy report to Chen Yi a few hours ago.

Chen Yi nodded: "Even if it is revenge, he has serious pedophilia tendencies. This kind of disease cannot be cured and can only be alleviated through psychological treatment and drug treatment. If this person is not found as soon as possible, there is a high probability that new cases will occur.

This is no longer a simple revenge killing, the murderer himself is a very dangerous person."

Lu Zhengkai looked back at the electronic map on the big screen and said, "Captain Chen, I feel that the murderer is active near Ji Jingfu's home. He is either a resident of Xintou Town or a resident of Hongzhong District. What do you think?"

Chen Yi: "It's quite possible. How is the investigation of Ji Jingfu's wife going?"

Lu Zhengkai shook his head: "She is a full-time mother with simple social relationships. I have already gone through all the data in her phone and found nothing abnormal.

With two children, she probably doesn't have the time to go out and make enemies, unless it's a grudge from her early years."

Chen Yi said: "Lu Zhi, the matter of Ji Jingfu and his wife can be slowly investigated by the people below. The most urgent task now is to find out who Ji Jingfu's family has been in contact with recently.

Why did the murderer choose to act when Ji Jingfu's family was about to leave Yangcheng? This issue should be taken seriously and cannot be regarded as a coincidence, so the interview work is very important. "

When mentioning this, Lu Zhengkai asked: "Captain Chen, if the murderer committed the crime because Ji Jingfu's family was leaving Yangcheng, then how did he know that they were leaving? Ji Jingfu wouldn't tell anyone else, right?"

Chen Yi said: "The child might mention it."

Lu Zhengkai: "That's right, the school can't be ignored."

Although Ji Jingfu could run away at any time, the two children's studies were not neglected. They might have asked for leave or skipped classes on the day of the incident.

There are police officers who are responsible for visiting schools, but no news has been received yet.

It was afternoon, exactly twenty-four hours had passed since the crime occurred.

Zhuo Yun called.

As the deputy chief of the Criminal Investigation Brigade, he has taken the lead in the investigation of this case and has been active on the front line of the investigation from early morning till now without a moment's rest.

"Lu Zhi, I found something." The voice sounded in the speaker, and the phone was on speakerphone. "In the past month, Ji Jingfu's vehicle had one maintenance and two repairs at a nearby repair shop. The owner of the repair shop is Qian Dakang."

Lu Zhengkai and Chen Yi looked at each other.

They knew Qian Dakang. Qian Dakang played a crucial role in the Economic Investigation Detachment's ability to identify Ji Jingfu, the suspect in the invoice buying and selling case.

Qian Dakang was involved in both cases, so one cannot help but wonder if there is a connection. Lu Zhengkai: "Did Ji Jingfu go there by himself?"

Zhuo Yun: "Qian Dakang said that Ji Jingfu went to the store by himself on all three occasions."

Lu Zhengkai asked: "Do you have an alibi?"

Zhuo Yun said: "There is no sufficient alibi. On the day of the incident, Qian Dakang and his wife said that they were busy in the store, but no customers could prove it. Because the two orders in the store that afternoon both required a long time to repair the car, the car owner did not choose to wait in the store.

Lu Zhi, I think Qian Dakang has a serious problem. The surveillance camera in his store has been broken for half a month. Is this a coincidence?"

Lu Zhengkai: "Check nearby surveillance cameras to see if he left when the crime happened. Also, arrange two people to secretly monitor him."

There are three purposes of secret surveillance: one is to prevent the suspect from escaping, the second is to prevent the suspect from destroying physical evidence, and the third is to observe whether the suspect has any abnormalities.

When new clues emerge pointing to Qian Dakang as a major suspect, the task force will conduct a carpet search of the repair shop with a search warrant. For example, if surveillance footage shows Qian Dakang lying and he was not in the repair shop at the time of the crime,

Chen Yi observed the map and found that Qian Dakang's repair shop was very close to Ji Jingfu's home, within three kilometers, and there were many small roads that could lead to Ji Jingfu's home, so it was not necessary to take the national highway.

Locals like Qian Dakang must be very familiar with the surrounding terrain and know how to completely avoid police detection.

Read the error-free version at 69shuba! 6=9+shu_ba is the first to publish this novel.

"Qian Dakang? I didn't expect this guy to be involved." When Lu Zhengkai hung up the phone, Chen Yi said, "We need to call Old Tang back to have a chat."

Lu Zhengkai: "Well, I'll tell him."

More than half an hour later, Tang Hongyi came to the meeting room. He was a little surprised to learn that Qian Dakang had entered the special investigation team's sight: "Qian Dakang? Could he be related to this case? When I went to find him, this guy didn't want to say a word."

Tang Hongyi looked exhausted. As he spoke, he took out a cigarette and lit it. Perhaps he was in a hurry, so he was slightly out of breath.

Chen Yi asked Qin Fei to pour him a glass of water.

"Thank you." Tang Hongyi drank it all in one gulp.

Lu Zhengkai asked: "Is there anything unusual about Qian Dakang?"

Tang Hongyi recalled: "No? He was an intelligence dealer in his early years, but he has quit because his son was beaten and sent to the ICU. He was so scared that he immediately retired and lived a quiet life."

"Oh?" Lu Zhengkai immediately grasped the key point, "His son was beaten and sent to the hospital?"

Tang Hongyi nodded: "Yes, I almost died."

Lu Zhengkai: "Is it possible that this matter is related to Ji Jingfu?"

Tang Hongyi was stunned: "This... I don't know about this, it shouldn't be possible, right? The person who beat him has been arrested, and he has also confessed the instigator, and Ji Jingfu's name is not among them."

In order to get information from Qian Dakang, he even went through the files of this intentional injury case, but it was of no use. No matter how he tried to persuade him with emotion or reason, Qian Dakang was unwilling to help.

In the end, he still used Chen Yi's name to ask Meng Yi for help, and then he locked in Ji Jingfu.

Lu Zhengkai thought for a moment and looked at Chen Yi: "What do you think, Captain Chen?"

At this moment, Chen Yi is reshaping his judgment of the case based on new clues. Did he kill Ji Jingfu's entire family to avenge his son? Even the children were not spared? It seems a bit far-fetched, but it is still possible.

In other words, Qian Dakang was not seeking revenge, his target was the mother and her two children.

"We need to first get to know Qian Dakang from the side." Chen Yi said, "There is a question here. If Qian Dakang's son was beaten because of Ji Jingfu, how did Qian Dakang know about it? The person who beat him didn't fully confess back then? Why did he do it today?"

Lu Zhengkai is a man of swift and decisive actions. Whenever there is a doubt, he will get to the bottom of it. He took out his cell phone and called the police officers below him, and assigned police force to question the suspect in the intentional injury case that year. Even if both parties know each other, he would take the case seriously.

Putting down the phone, Lu Zhengkai said, "Maybe it's a dual motive? Ji Jingfu played a role in the beating of Qian Dakang's son. Qian Dakang saw Ji Jingfu again after many years. He could kill anyone anyway, so he chose Ji Jingfu. This not only vented his perverted desires, but also avenged his revenge."

Chen Yi said nothing and turned to look at Tang Hongyi.

Tang Hongyi frowned and said, "I feel... Qian Dakang doesn't seem like a pervert. I didn't find anything suspicious. Uh... don't listen to me. Let's check it carefully. What if?"

Zhuo Yun's investigation soon produced results, and the phone call came again, saying that the surveillance camera did not capture Qian Dakang leaving the store during the incident.

Lu Zhengkai enlarged the map. There were many small roads in Xintou Town, and Qian Dakang didn't necessarily have to take the national highway. The fact that he was not caught on surveillance camera couldn't rule him out as a suspicion.

Tang Hongyi stood up and walked to the big screen, saying, "In the early years when the national highway toll station was still there, many drivers would take a detour to save money. Look at this place. If you take this road, the surveillance camera will definitely not be able to capture Qian Dakang."

Lu Zhengkai hummed and said into the phone, "Go to the nearby paths and check if you find any private surveillance."

Surveillance cameras are now widely available and can be purchased for just a few dozen dollars online. Many people like to install surveillance cameras. Private surveillance is also an important source of clues for police investigating cases, provided that the owner agrees. Generally, as long as there is no secret, the owner will not refuse the police's request.

Zhuo Yun: "Okay."

After hanging up the phone with Zhuo Yun, Lu Zhengkai continued to give orders to other investigation teams. During the visit, he asked Ji Jingfu and Qian Dakang whether they knew each other in their early years, trying to find the intersection.

At this time, Chen Yi asked He Shixin: "Old He, if someone deliberately destroyed the surveillance and deleted the surveillance video, can it be found out?"

He Shixin replied: "It depends on the method. If you are not an expert, you can find it out."

Chen Yi: "Take Qin Fei and the others with you and tell them that a major case has occurred. They hope to repair the surveillance for free to assist the police in investigating the case. This will only benefit him and not harm him. If he refuses..."

Having said that, he looked at Lu Zhengkai.

Lu Zhengkai immediately said: "If you refuse, apply for a search warrant and conduct a thorough search to see what secrets are hidden in the repair shop."

"I'll go right away." He Xin stood up and took Qin Fei and the others out of the meeting room.

In the meeting room, Chen Yi raised a new question: "What's the situation with Ji Jingfu's car? Why did he have to repair it twice in one month?"

This was a strange thing, he had seen the car before, and it looked and looked quite new.

Lu Zhengkai: "What does Captain Chen mean?"

Chen Yi: "Let's find a professional to take a look."

(End of this chapter)