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

Chapter 639 New Situation
Lu Guangjun, captain of the Hongzhong District Criminal Investigation Brigade, personally led a team to search Qian Dakang's home.

If Qian Dakang is the murderer in this case, there may be clues at the crime scene, the repair shop, and at home. The possibility that the murder tools were hidden directly at home cannot be ruled out.

The community is near the repair shop. It has three bedrooms and two living rooms. It is far from the city center and is considered a suburb, so the housing prices are not high.

While the police officers were searching each bedroom, Lu Guangjun walked into the kitchen.

After a quick glance, his eyes fell on a set of knives placed next to the sink.

Realizing something was wrong, Lu Guangjun walked closer.

There was an empty spot on the wooden knife rack; a knife was missing.

A set of kitchen knives generally includes kitchen knives, boning knives, meat cleavers, etc. Lu Guangjun put on gloves and took out all the knives, then took photos and searched for the same ones online.

"What's missing seems to be a fruit knife?" Lu Guangjun made a preliminary judgment.

This set of knives is from a brand of kitchenware, and they are new, obviously they were bought not long ago, so it is easy to check.

After comparing one by one, Lu Guangjun determined that the missing knife was a fruit knife. He immediately suspected that it might be the murder weapon and then called the task force headquarters.

After receiving the call, Lu Zhengkai decisively gave an order, asking people to go to the market to buy the same knives after daybreak. They must be exactly the same. If the offline physical store does not have them, they should go to the e-commerce company’s own warehouse to buy them, and they must be bought in the morning.

By comparing the lost knife with the wound of the deceased, as long as they match, Qian Dakang and his son can be confirmed as suspects.

"Be sure to search Qian Dakang's house thoroughly." Lu Zhengkai said to Lu Guangjun on the phone.

Lu Guangjun: "Understood."

Municipal Bureau.

When Lu Zhengkai put down his phone, the police officer responsible for checking Ji Jingfu's vehicle came to report the situation.

"Lu Zhi, Captain Chen, no problems were found." said the police officer.

Ji Jingfu's vehicle had two repairs. The first was due to a damaged spark plug, and the second was due to a flat tire. These were common minor problems, but the vehicle had clearly just been serviced.

Lu Zhengkai: “Is there no sign of human damage?”

The police officer said, “No.”

Lu Zhengkai waved his hand to let the police officers leave, and then discussed with Chen Yi the suspicion of Qian Dakang and his son. After finding out that there was a missing fruit knife in Qian Dakang's home, the problem between the two had become very serious.

If nothing unexpected happens, this murder case should be related to them.

Is it Qian Dakang or Qian Yu?

It's all possible.

"It's hard to say what the motive was. Why? So far, no connection has been found between the victim and Qian Dakang." Lu Zhengkai said.

Chen Yi is trying to connect all the clues, but he feels that there is a key point missing. As long as this key point comes out, everything will be clear.

At present, Qian Dakang and Qian Yu are each 50% suspects, and new clues are needed to change the data.

"Wait a little longer." Chen Yi said, "Take a nap first."

The search continues.

Repair shop.

The police dogs have already searched a kilometer away. They are well-trained and can smell blood residue diluted trillions of times. They will not miss any unusual smell underground, but they have not found anything yet.

He Shixin also took people to the abandoned hospital project building. There was a lot of decoration waste discarded everywhere. Perhaps the things they were looking for were hidden in some inconspicuous garbage dump.

"What a shame, what a waste of money."

When I took a new look at the building complex that was beginning to take shape, I realized that if it was abandoned in the future, I would lose a lot of money.

"Search carefully! Be careful! Use tools as much as possible!" he shouted. There were too many steel bars and cement in front of him, and it would be easy to get hurt if he used bare hands.

Police officers: “Yes!”

Time passed little by little, and in a blink of an eye it was four o'clock in the morning.

He Shixin's investigation team returned empty-handed. No objects suspected to be tools of the crime were found in the entire wilderness. If they were further away, they would need to increase police force. After seeking the opinion of the command center, Lu Zhengkai suggested retreating first.

The investigation cannot rush forward mindlessly. It is unrealistic to dispatch hundreds of police officers to search large areas of wilderness and forests simply because of suspicion, unless there are detailed clues.

Lu Guangjun also did not make any new discoveries in Qian Dakang's house. He had searched Qian Dakang and Qian Yu's rooms and everything was normal.

Lu Zhengkai called Zhuo Yun to inquire about the progress of the surveillance investigation.

Zhuo Yun: "Lu Zhi, this is not easy. There is a large village to the south of the national highway, and there are also abandoned areas to be demolished. There are many small roads that are like a grid. If Qian Dakang is familiar with the roads, he can completely avoid all the monitoring points.

I have checked all the private surveillance that can be checked, and have not found Qian Dakang passing by before or after the incident. As for the rest, it is not convenient to knock on the door so late at night, so I can only wait until daybreak.

The trash cans and garbage piles on the roadside have been turned over and everything is normal.”

Lu Zhengkai issued a new order: "Thank you for your hard work. Stop for a while and go to the convenience store across from the repair shop. The owner is Zhang Menhai, who is drunk and asleep. Wait until he wakes up. It's a good opportunity for you to take a nap in the car and rest.

After waking up, ask him what he talked about with Qian Dakang last night, and also ask about the past. "

Zhuo Yun: "Understood, I'll be there right away."

At five o'clock in the morning, Qian Dakang opened his eyes in the lounge of the Municipal Bureau. The police officer in charge of surveillance saw him and immediately reported to Lu Zhengkai.

So, Qian Dakang, who was dry-mouthed and not yet completely sober, was dragged directly into the interrogation room.

Click!

The task force didn't bother to be polite with him. They handcuffed his wrists directly and pinned him to the chair in the interrogation room, preventing any accidents from happening during the interrogation.

After all, he is a suspect in a family murder case. The murderer in this case is an extremely dangerous person who can do anything if he loses control of his emotions.

Qian Dakang felt like he was dreaming, his face was full of confusion: "What...what are you doing? Where is this?!"

He had a considerable presence, and all those who should be present for the interrogation were present, including Chen Yi and Zhou Yebin.

Lu Zhengkai, captain of the Criminal Investigation Brigade of Yangcheng City Public Security Bureau and head of the special task force, presided over the trial in person.

"What's your name?" Lu Zhengkai stared at him and asked.

Qian Dakang: "Qian Dakang."

Lu Zhengkai: "Do you know why we arrested you?"

Qian Dakang looked around the interrogation room full of people. Everyone was looking at him like prey. He couldn't help swallowing his saliva and said, "No... I don't know."

"I don't know?" Lu Zhengkai snorted. "Think about it again. The afternoon before yesterday, in Xintou Town Chengzhong Village, Ji Jingfu, do you remember it?"

Qian Dakang shook his head: "No... Police comrade, what's going on?"

"You're shameless, aren't you?" Lu Zhengkai slammed the table and angrily asked, "How did the surveillance camera at the repair shop break?"

Qian Dakang: "How would I know? I am the bad one!"

Lu Zhengkai pointed at him and said, "You said you are bad, right? What if you are not good?"

Qian Dakang remained calm: "It's my own fault!"

Seeing this, Lu Zhengkai took out a few hard drive photos and placed them on the table so that Qian Dakang could see them just by sticking his head out.

"The hard drive was properly inserted into the computer host. If you said that the internal parts were broken, I would believe you, but what's going on? Are you blind, or do you think the police are fools? This is completely man-made damage!"

"Tell me! Why did you destroy the surveillance hard drive?" Qian Dakang lowered his head and thought for a moment, then said, "Maybe someone else broke it after I threw it away?"

Lu Zhengkai almost laughed out of anger: "You're trying to trick me, right? Huh? You didn't throw away anything else on the computer, but the hard drive?"

Qian Dakang asked back: "So what? I like throwing."

This person's mental quality is relatively stable and he will not be frightened by a few words from the police. However, precisely because of his attitude towards the interrogation, his suspicion has increased again, almost reaching 100%. Even if he is not the murderer, he must be an insider.

The direction is ok.

Since the direction is correct, the case will be easy to handle. We just need to hold on to this line and temporarily stop the peripheral visits. We can focus on Qian Dakang.

Lu Zhengkai took out other photos again, which showed the knives taken by Lu Guangjun and Qian Dakang.

"There's a fruit knife missing. Where's the knife?"

Qian Dakang took a look and replied, "It's lost. It's been lost for a week. I can't find it no matter how hard I look."

Lu Zhengkai: "Qian Dakang, I advise you to be honest. You can never lose something like kitchen knives."

It is possible that it cannot be found for the time being, but Lu Guangjun has already searched Qian Dakang's home and did not find the fruit knife.

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In other words, the fruit knife was taken out of the house.

In a normal family, who would take a kitchen fruit knife out of the house? It is totally illogical. Qian Dakang would not lie. It would be better to say that he accidentally dropped it when he took it out to use. It is more credible.

Qian Dakang was helpless: "Comrade police, what you said is a bit absolute. It is lost. What can I do?"

Interrogation without evidence is very tiring, which wears out the suspects and the police as well. It just depends on who can outlast the other.

Chen Yi listened for a while, lost interest, and quickly left the interrogation room.

The interrogation lasted until dawn, and Qian Dakang kept the same story from beginning to end:
The incident happened at the repair shop.

Fruit knife, I don’t know where it went.

Ji Jingfu, I don’t know him.

During this period, the investigation team responsible for investigating Qian Yu's grandmother's home returned. At this moment, Lu Zhengkai was still interrogating Qian Dakang, so the investigation team reported to Chen Yi separately.

"Captain Chen, it's very clean." This time Lu Yongqiang went over in person and showed Chen Yi the photos of the room. "Especially the windows. They are a little abnormally clean. They must have been cleaned carefully. I asked the old lady and she said it wasn't her who cleaned it."

Chen Yi flipped through the photos one by one and said, "If it wasn't the old lady who cleaned it, then it must have been Qian Yu who cleaned it. This college student... is quite diligent, isn't he?"

Lu Yongqiang could tell that Chen Yi was speaking in a sarcastic way: "He was trying to clean up the traces of climbing through the window? When the crime happened, he climbed through the window to leave grandma's house, and then came back after committing the crime? This bastard has some anti-detection awareness."

Chen Yi put down the photo: "There are no traces left at the crime scene. The murderer must have wrapped himself up very tightly. Where would he hide these things, including the murder weapon?"

Lu Yongqiang: "Anyway, there is none near Qian Yu's grandmother's house."

Chen Yi: "There's nothing here, and nothing there. Could it be that we've really ended up in a garbage dump?"

Lu Yongqiang hesitated: "Captain Chen, do you think it was Qian Dakang or Qian Yu who did it?"

Chen Yi turned around: "What do you think?"

Lu Yongqiang smiled awkwardly: "I... I can't say for sure. Anyway, both the father and son are quite weird. I just can't figure out their motives. Why would they do this? They even didn't let the children go. It's too cruel."

Chen Yi: "Reality is often so outrageous. When will they come back?"

Lu Yongqiang: “I haven’t seen it yet.”

Chen Yi: "Look, Brother Qiang, go to the hospital where Qian Yu was treated, find the doctor who performed the surgery on Qian Yu, get the completed rescue records, hospitalization records, and surgery records, and find out what happened to Qian Yu and where he was mainly injured."

Lu Yongqiang: "I'll go right away."

After Lu Yongqiang left, Chen Yi closed his eyes and rested.

On the other side, Zhang Menhai sobered up.

Zhuo Yun saw him.

"Why did you go drink with him? He asked me to go." Faced with the city police coming to his house, Zhang Menhai was puzzled and answered truthfully, "It was Lao Qian who called me and asked me to drink. I didn't think much about it. We often drink together... Police comrade, if he did something illegal, it has nothing to do with me. I know nothing."

Zhang Menhai had a strong desire to survive. Even the criminal police from the Municipal Bureau had come, so he guessed that it must be no small matter.

A few days ago, a rumor came out from Xintou Town that a big case had occurred in the urban village. More than a dozen police cars were there and several layers of cordons were set up. He thought it might be related to that case.

Zhuo Yun: "I didn't say it had anything to do with you. Does Ji Jingfu know him?"

"Ji Jingfu?" Zhang Menhai was stunned for a moment, frowned and thought, as if he felt that the name sounded a little familiar.

Seeing this, Zhuo Yun asked: "Ji Jingfu, think about it carefully."

Zhang Menhai was unsure: "I have some impression of it, but I can't remember where I heard it."

Zhuo Yun: "Does Qian Dakang know him?"

Speaking of Qian Dakang, Zhang Menhai's memory seemed to be instantly opened up: "Oh... yes, yes, it seems... about ten years ago, Old Qian's son was beaten into the hospital. I heard that it was Ji Jingfu who betrayed him."

Zhuo Yun's eyes narrowed slightly: "What? Are you sure?"

Zhang Menhai opened his mouth, but was frightened by Zhuo Yun's sudden seriousness. After hesitating for a while, he smiled bitterly: "No... I'm not sure."

Zhuo Yun frowned: "Are you sure?"

Zhang Menhai was not sure: "I have some impression in my mind, but I am not sure if it is true or not."

Zhuo Yun asked in a different way: "Who told you that?"

Zhang Menhai: "I forgot. It's been so many years. How can I remember it?"

Zhuo Yun: "What did you talk about with Qian Dakang last night?"

Zhang Menhai recalled: "Just... just chatting, talking about everything. I drank a lot last night. I haven't drunk so much in a long time. I don't know what's going on with this old Qian. He kept pouring me wine. I almost lost my memory."

Zhuo Yun didn't miss any details: "Is he happy or sad? Is there anything wrong with his state?"

Zhang Menhai: “I didn’t feel it.”

Zhuo Yun: "Recall carefully what you talked about, and speak slowly. There is no rush."

……

At ten o'clock in the morning, about forty hours had passed since the murder of the entire family. All the investigation teams returned and waited for the next order.

Conference room command center.

"Qian Dakang is really stubborn. It's hard to deal with him." Lu Zhengkai drank a glass of water, anger still lingering on his face. "Zhang Menhai said that Ji Jingfu betrayed Qian Dakang. There is no smoke without fire. This should be the motive, right?"

Chen Yi was repeatedly reviewing the inquiry records brought back by Zhuo Yun.

He found the key point. The sudden appearance of Zhang Menhai was quite strange, and his confession was also problematic.

"No." Chen Yi said, putting down the document.

Lu Zhengkai looked over and asked, "What's wrong?"

Chen Yi: "It's wrong to drink this wine, and it's wrong that the surveillance camera in the repair shop was damaged. Doesn't Lu Zhi think that Qian Dakang's behavior is not intended to clear his suspicion?"

"Don't want to clear the suspicion?" Lu Zhengkai reacted for a moment, his heart skipping a beat: "Is it to increase suspicion, muddy the waters, and disrupt the direction of our investigation?"

(End of this chapter)