novice forensic medicine

Chapter 346 The Cut on the Palm
Following Zhou Ning's gaze, the two also looked over.

Sure enough, on the inside of the top of the kennel, there was a dark brown mark with four fingerprints on the edge.

Sun Gaotie didn't need to order, and hurried up to collect fingerprints. This angle was just inside the iron sheet, which completely blocked the wind and rain erosion, and it can be said that the preservation was quite complete.

Yang Xue checked the cement footprints and said happily to Zhou Ning:
"The sole patterns left by the cement are the same as Chen Gang's footprints, and the force points are exactly the same. I don't know if this blood stain can match the blood stains on the broken porcelain pieces smashed by his family. If they match, this can be done. It's confirmed to be Chen Gang's DNA."

Zhou Ning didn't speak, and looked up at the wall.

On the top of the wall, it was the same as the previous investigation of Wang Hongzhan's house. There were shards of glass on the top, inserted into the top of the wall. It was almost impossible to turn over such a wall with bare hands without leaving any traces. It was necessary to check it.

However, there seems to be a lot of blood left on the inside of the top of the kennel. According to the amount of broken porcelain and blood left in the old house, the cuts are not serious. When Chen Gang fled, did he still have injuries?
Unable to figure it out, Zhou Ning didn't think about it anymore. Seeing that the two of them had finished extracting, someone had already sent a ladder. Yang Xuetong climbed up, checked the wall continuously, took a few samples, and then looked at Zhou Ning.

"There are very few traces left on the wall. We found traces of suspected blood everywhere. This needs to be compared in the laboratory. But boss, Chen Gang was killed when he climbed over the wall. How did the other kidnapper leave?"

Zhou Ning looked around the wall. Although the house has been vacant for 12 years, the courtyard wall is very intact. It is about two meters high and there is no collapse. When I just came here, I saw the wall near the road. On the side wall, mobile company advertisements are drawn.

"I remember Director Sun said that when they were about to surround this place, some people seemed to see a black shadow leaving over the wall, but they didn't think too much about it. After all, Chen Gang was the only one who was going to be arrested at that time. They didn't find the ransom, so they thought there might be someone there. A second person is involved."

Yang Xuetong waved at Sun Gaotie.

"Boss, go and see Da Zhao and the others. Let us borrow two more ladders. Since we climbed over the wall and left, we will screen them no matter what. I will take a few more samples. At worst, I will be scolded by Sister Cui, not how old I am. For this wall, it’s almost impossible to go up without getting hurt.”

Zhou Ning nodded, he knew that although this was a stupid way, it was also the most effective.

"Okay, you two, pay attention to safety, let Director Xu send someone to walk around the outer wall, and collect all the scattered glass fragments on the ground, since finding a needle in a haystack is not bad."

Sun Gaotie was happy, he waved his hand towards Xu Dayuan, and shouted out what Zhou Ning said word for word. Zhou Ning rubbed his nose and hurried into the second room where Da Zhao and the others were staying.

As soon as I entered, I found that the light here was very dark. There was a small blue glass window on the east wall. The glass was relatively complete. The bed, table, and wardrobe in the room were complete. The only chair was missing a leg. Da Zhao poked his head into it. Inside the closet, Liu Yongxin and Zhu Xingxing stood in front of the bed looking at something.

Zhou Ning walked over quickly, inspected the room, saw two deep scratches on the table, and there seemed to be blood on the edge. This discovery made Zhou Ning instantly contact the blood on the top of the kennel.

Could it be that there was an internal quarrel between Chen Gang and the kidnapper, and he was injured during the dispute, but in Cheng Xinghui's memory, the kidnapper left alone, and when the police surrounded the place, Chen Gang hid him and fled.

Wait, according to the urine nature of the kidnapper in the 2004 kidnapping case in 4.14, the first step in getting the ransom was killing people to silence them, and even judging from the time of death, it is possible that the person had already been killed before the ransom was paid.

Then, in the 2000 kidnapping case in 2.3, he came here with a ransom, and wanted to kill people to silence him, but during this process, maybe Chen Gang softened, or maybe he heard the sound of the police surrounding him interrupting his plan, so he fled in a hurry.

The more he thought about it, the more likely Zhou Ning felt.

The blood splatter in Chen Gang's old house is quite complete, but it will not remain so clear even if it is swept across the ground. Maybe it was not left unintentionally. It may be the place where Chen Gang and the kidnappers had their first dispute.

The child was transferred to Liyuan. After getting the ransom, the kidnappers did not convince Chen Gang. Although they had a second dispute, the kidnappers did not kill Chen Gang, but left with the ransom.

Seeing that Zhou Ning was not moving, Da Zhao made a hush gesture towards Zhu Xingxing. He knew that Zhou Ning must be thinking of something.

Zhou Ning put on his gloves and pointed to the two marks on the table.

"Did you take a sample?"

Da Zhao nodded, and Liu Yongxin came over.

"At that time, the investigators heard the cry of the child and came in to find Cheng Xinghui. He was shot dead, so we didn't investigate the scene again. When we found that the ransom was not found, we didn't find any traces left inside."

Zhou Ning observed the two traces, they didn't look like they were cut by a knife, but two deep grooves, the wood on the table was damaged, it looked like they were scratched by fingernails.

Da Zhao came over and held up a swab.

"Zhou Xiaozhou, why don't I take the table back. It's all traces from 12 years ago. I'm afraid the sampling is not standard."

Liu Yongxin waved his hand and used a scalpel to pick out a piece of debris in the corner.

"That's fine, but don't you think this mark is a bit strange, I think it's like a mark made by a knife with grooves."

Zhou Ning looked up at Liu Yongxin and paused slightly.

"Can a three-edged bayonet do it?"

"Don't guess, I've found someone to get a three-edged bayonet, and then we can do an experiment. The wood of this table is indeed very soft. You can see that you can scratch it with a fingernail. Let's go back and do an experiment. See Let's see if the army thorns can make such marks."

Zhou Ning nodded.

"The table was taken back. Are there any other discoveries in the room?"

Da Zhao pointed to the investigation box, and opened one layer, revealing several evidence bags inside.

"I found some things in the closet. There was a size L spring and autumn tooling jacket with the words rainbow firework embroidered on it. According to Cheng Zhi's description before, Chen Gang was very thin. This should be his clothes, but I don't know why it was thrown in there. Here."

Liu Yongxin folded his arms and narrowed his eyes slightly.

"Do you remember that the kidnapper's shoe prints were left on the outside of the wall. The shoes were the same as Chen Gang's. Da Zhao also inferred the man's height and weight, and the shoes were all the same. I think the clothes belonged to Chen Gang too. Maybe that's it. Changed into the same clothes before getting the child out."

Da Zhao kept gesticulating with his fingers with a dazed expression.

"This makes sense. The two of them used cover, pretended to be alone, and got the child out. They first went to the Chen family's old house. Maybe the kidnapper wanted to kill someone at that time, but was stopped by Chen Gang. Chen Gang even regretted cooperating, but the kidnapper threatened I left Chen Gang and asked him to wait here in Liyuan.

The kidnapper went to get the ransom, and then returned to Liyuan, where the kidnapper wanted to kill the child for the second time. As for the bloody dispute, Chen Gang's wound burst open, and the kidnapper took the money and ran away. When the police approached, Chen just wanted to escape, and waited. Wait for Uncle Liu, did Chen Gang have any injuries on his hands? "

Liu Yongxin slapped Big Zhao across the face and gave him a blank look.

"Are you treating me as a computer? Didn't the file come over, and you guys scanned it too, don't you know it at a glance?"

Zhou Ning had already opened his phone at this time and found the pictures in the file. There were not many pictures of the deceased being killed, and the angle was not bad. After looking through a few pictures, he found a picture with his hands spread out. There was gauze on the palm of his right hand, but it was loose. Part of it was opened, and two deep cuts could be seen on the palm.

There is a scale next to it, and Da Zhao quickly converted it, and gave the distance between the two cut marks as 0.95 cm. Seeing this result, Da Zhao's eyes lit up.

"We checked before that the diameter of this 56-style three-edged bayonet is 1.8 cm. Divided by 2, the radius is 0.9 cm, the circumference is 2.826, and the distance between the three ribs is about 0.942 cm. If the skin on the hand is in a loose state, then This gap is entirely possible, Chen Gang was cut by the three-edged bayonet."

Liu Yongxin patted Da Zhao's arm with a smile.

"It's not bad, elementary school math is good, let's take a sample and send it for inspection. We know a lot about the known conditions now, but we don't know the relationship between Chen Gang and the kidnapper. If the DNA of an unknown man is found in these samples , then we will make a lot of money.”

Da Zhao blinked, raised his hand, and counted with his fingers.

"It is true that there are many known conditions. The kidnapper is between 175-178 in height, medium in build, and 140-150 in weight. He has anti-reconnaissance capabilities and can completely escape the encirclement of the police. This is not something ordinary soldiers can do.

By the way, there is also the point of contact with special lubricants for ships, which has an unusual relationship with Chen Gang. According to the state of cruelty and murder of the Zhu family, the kidnapper is a ruthless person.

But he didn't attack Chen Gang, he just escaped with the ransom. It stands to reason that keeping Chen Gang alive is the biggest threat to his safety. "

Liu Yongxin nodded, and Zhou Ning touched the scratches on the table.

"The analysis is very reasonable. This kidnapper must be very familiar with Chen Gang, and he can tolerate Chen Gang's excessive demands, and even touch the bottom line of the kidnapper. After all, he left alone, which is the greatest trust in Chen Gang.

As for who this kidnapper is?Does the Chen family's grandson family know?It all depends on Xu Bureau and their interrogation. I didn't know that Chen Gang was adopted before, and the two families can still play sloppy eyes. Now there is no need to hide it. Let's go back to submit for inspection and do relevant tests. "

Zhou Ning touched the table, then looked at the wardrobe.

"Take the table back. Chen Gang had cuts on his hands, indicating that the dispute here was very intense. Maybe the kidnappers also had injuries on their hands. Everything that could be extracted from the outer wall was extracted, and everything in the wardrobe was put back."

Da Zhao nodded, and opened the drawer at the bottom of the wardrobe, a dark green bag suddenly appeared, with the red five-pointed star on it very conspicuous, looking at this bag, Zhou Ning paused.

"Wait, Cheng Xinghui said that the man in the hood had such a bag, didn't he mean that he carried the ransom money and carried it away?"

(End of this chapter)