novice forensic medicine

Chapter 284 The child who drowned in the pickle jar

An hour later, the car came to Hai'an City.

On the way, Xu Dayuan had already received several calls, and also reported the details of the two cases in Rudong City to Bureau Hu. Of course, at the end, Xu Dayuan told about the fat man.

Bureau Hu was silent for a long time, and agreed to Xu Dayuan's arrangement, putting this case on the last schedule of the working group.

As soon as the car stopped, there were already many people standing in front of the car door. You could tell from the police ranks that they were the leaders of the Hai'an City Bureau. Compared with Rudong City, there was a big gap in the warm treatment they received.

The captain of the criminal police team is called Zhang Chunbo, who seems to be familiar with Xu Dayuan, the two chatted for a while, and then greeted everyone, Xu Dayuan said a few words, there is only one purpose, they came to clear the backlog of cases, work first, Get everyone away.

Zhou Ning and the others followed behind Xu Dayuan, and then came to a conference room. When they entered, they found that it was already full of people. Zhang Chunbo grinned and said:

"Don't be surprised, we've been waiting for you to come here. Last night, I sent people to guard the Rudong City Bureau. I have first-hand information about the progress of your investigation. Seeing that it's over there, I think today should I can come, so why not just bring everyone here, let's analyze the case, shall we?"

Looking at the enthusiastic Zhang Chunbo, Xu Dayuan was also a little helpless.

"Why are you in such a hurry? Oh, can't we take a break when we come?"

Zhang Chunbo waved his hand with a look of indifference.

"What about rest? After investigating these cases, wouldn't it be nice to go back to your own home to rest? What do you mean? When I arrived in Rudong, it was said that work would start on the same day. What's wrong with me?"

Xu Dayuan smiled, punched Zhang Chunbo, and sat directly in the middle. Zhang Chunbo introduced the names of the members of their team. Xu Dayuan looked at the file in front of him, his expression paused.

"The backlog of cases you declared is not two, why are there three files here?"

Zhang Chunbo grinned.

"Leader, don't get excited. It is true that there are two backlogged cases. The other is a case we are currently investigating. The identity of the deceased has not been found. It is not that I heard that you brought Director Zhou here, so I think it is better to take it out and help Let's judge, let's also have a direction of investigation.

After all, the identity of the deceased has to be found out, and the investigation of this case is probably clear. Why don't we first look at the case two years ago? "

Xu Dayuan glanced at Zhou Ning, saw that he didn't say anything, and nodded towards Zhang Chunbo.

"Let me introduce the case."

Zhang Chunbo opened his notebook and hurriedly said:

"The first one is the 2011 family extermination case in 8.14. The case happened in Jiaotuan [tuǎn] Village, Baishahe Street. On the morning of August 8, Jiaotuan Village's documents reported the case. Wang Hongzhan's family in Jiaotuan Village died. Our criminal police team Arrived at the scene at 14:8.

After the forensic doctor Bai Hua led people to investigate the scene, they found that there was a dead person in the middle of the yard. It was Wang Hongzhan's wife He Dongmei. She was lying prone on the ground with her head facing the gate of the yard.

After forensic testing, no DNA of a second person other than He Dongmei was found on the knife, and there were only fingerprints of thread gloves on it. The inside of the courtyard was sealed, and the courtyard door was locked from the inside. There was a ten-centimeter hole on the door for unlocking it. and hitch.

As for all the windows, there are guardrails so that no one can get in and out. The only one without guardrails is the kitchen window, but adults cannot pass through. We guess the murderer is a thin adult, or a tall and thin teenager.

After investigation, it was found that the deceased, He Dongmei, was at home with her two-year-old son, Wang Jiahan. Wang Hongzhan worked in Shenzhen City all year round, and came back every year for more than ten days during the Chinese New Year. He heard that his wife and children had been killed, so he rushed back.

We began to search the courtyard of Wang Hongzhan's family. Under the eaves on the west side of the main house, we found a pickle jar with stones pressed on it. When we opened it, we found the body of Wang Hongzhan's son Wang Jiahan.

The child was curled up and stuffed into the pickle jar with its head down, and had drowned. The time of death was the same as that of He Dongmei, between 8:14-22:00 on August 23.

The pickle jar has a diameter of 45 cm and a height of 45 cm. Neighbors reported that it was used by the Wang family to make pickles. However, after the death of the old man of the Wang family, he never used it again. He Dongmei was born on May 1980, 5 and is a student of the No. 22 Primary School in Haian City. Teacher, he is humble and has no grudges with others.

Usually, He Dongmei lives in the city with her children. This old house is where Wang’s parents live. After the old couple passed away in a car accident in 2009, they rarely come back. However, last July, they were notified of surveying and mapping, and asked the family to keep people. He Dongmei came back with the children. , and also helped the children in the village make up lessons for free.

After interviewing, we found two theories, saying that Wang Hongzhan may have offended someone before leaving Haian City. However, our investigation found that Wang Hongzhan is a very good person in IT and is planning to buy a house in Shenzhen. Moved over, but I didn't expect such a thing to happen.

Some old people also responded, saying that the parents of the Wang family passed away suddenly, and they didn’t leave any words at all, but the Wang family used to be the largest landlord in Jiaotuan Village, and all the land in this village belonged to their family. I didn't give it to them, but all the arrears from the house raids were returned, and it seems that a lot of gold bars were given.

However, we thoroughly searched the old house of the Wang family many times, but we did not find any hidden gold bars or any effective clues. We only found two footprints, one front and one back, by the flowers on the west wall, and compared them with the villagers at that time. , did not find the same sole print.

One of the footprints is very complete, and the bottom is still soil. We brought back samples to keep. As for Wang Hongzhan’s old house, Wang Hongzhan left the key. No one went there except us this year. We also investigated Wang Hongzhan himself. He has a good relationship with his wife, they are classmates in junior high school, and there is no affair. "

"Is the deceased's mobile phone left at the scene, is there any clues in the last call records on it, and text messages?"

Zhang Chunbo nodded.

"There is a mobile phone, and the call records have been verified one by one. They are all colleagues and relatives. There is no special contact. We have contacted all the people who have called within a week. We have also investigated the trajectory of the deceased's activities at the time of death, and found nothing valuable. Information."

Xu Dayuan kept recording. On the big screen, there were on-site surveys and photos taken, which can be said to be quite detailed. When the photo stopped on the footprint, Da Zhao raised his hand and shouted to stop.

A middle-aged elder sister who controls the computer raises her eyes to look at Da Zhao. It is obvious that she is the local forensic doctor Bai Hua.

A female forensic doctor can carry the job of a county-level city by herself, which shows that her ability is definitely not inferior to Xu Guanhai in Rudong City, and the photos on the scene are so detailed, it is indeed her best effort.

Da Zhao stood up and gestured with his thumb and index finger.

"Can Forensic Doctor Bai zoom in on the picture? It's like the footprints on the soles of the screen. I want to see the patterns on the soles."

Bai Hua nodded, and said while zooming in:

"We have compared it. This is a sneaker. The size of the shoe is 43. The shoe is a spring model of that year. The price is very expensive. Even if there is a discount in summer, it will cost 1868 yuan.

Jiaotuan Village is not a rich village. Those who can afford such shoes should be at least fashionable young people. We screened all the young people who entered and exited Jiaotuan Village on August 8-13, but No consistent results were found. "

Da Zhao didn't panic at all, smiled and nodded towards Bai Hua.

"Forensic Bai did a very meticulous job. Captain Zhang said just now that this piece of mud with footprints was brought back. I don't know where it is kept. Can you take a look?"

Da Zhao's questioning made Xu Dayuan look sideways. Normally, Zhao Xinli was very modest unless he found something, and Zhou Ning didn't move. Obviously he supported Da Zhao's approach. Xu Dayuan also took advantage of the situation to look at the forensic doctor Bai Hua.

She nodded.

"I'll get it later. In order to prevent it from drying out, keep it in an airtight cover to keep the humidity in."

After a while, Bai Hua came back with a transparent plastic box and put it in front of Da Zhao and the others. Zhou Ning touched it. Sun Gaotie stood up and pointed downstairs. Zhou Ning shook his head slightly.

He is used to it, and likes to use the LED magnifying glass to observe the details, but since Da Zhao wanted to see it, he must have discovered it, and Zhou Ning was not in a hurry. After waiting for a long time, everyone was staring at Da Zhao's movements. He kept calculating what was written, then stopped writing and said:
"Bai Forensic Doctor, I would like to ask whether the distance between the two footprints was measured during the on-site investigation. Can you tell me the value?"

Birch flipped over.

"The stride is 97 centimeters."

Da Zhao calculated again, and then stopped.

"According to the depth of the footprints in the soil, the size and shape of the footprints, the distribution of force points, the stride length, etc., I estimated the height and weight of the suspect who left the footprints. The suspect's weight was about 150 catties. Between 175-180.

From the footprints, it can be seen that the suspect's foot is slightly larger than the shoe, and there are heavy marks on the edge of the toe, especially at the thumb and metatarsal joints. I think the normal size of the murderer's foot is 44, and there are 20 Hallux valgus above [-] degrees. "

Such an analysis made Xu Dayuan look sideways. He subconsciously looked at Zhou Ning. Zhou Ning nodded solemnly, which was considered to have approved Da Zhao's judgment.

However, Bai Hua on the opposite side frowned slightly, and subconsciously looked at the footprints inside the transparent box again. The details were indeed as Da Zhao said, but she was really not good at judging in this area.

"Is there a formula?"

Da Zhao nodded, and handed the piece of paper he had just used for calculation to Bai Hua. After reading it, Bai Hua still frowned, obviously not approving this method.

Zhou Ning understands this kind of gaze very well. He thinks that Zhao Xinli is young, does not look like a convincing face, does not have that kind of Mediterranean hairstyle, and is not over 40 years old. Zhou Ning didn't care, he knew Da Zhao would not care.

In fact, this case is quite strange. He didn't live in the old house all year round, and he came back for more than a month. He was still tutoring the children in the village every day, and he was killed overnight.

Especially if the child is drowned in the water tank, is it seeking revenge or seeking money?

This cannot be regarded as fact based on the speculation of the villagers alone.

The deceased was facing the gate of the courtyard, and was stabbed in the back of the heart with a knife in the courtyard. In the photo, the deceased was wearing a cool nightgown, and there were no shoes on his feet or around the corpse. He was killed with a single knife.

The inside of the courtyard door was locked, and there was no sign of picking the lock. It didn't look like he came in through the main entrance. It was probably because of this that the people from the Haian Criminal Police Brigade believed that the murderer came in through the small window in the kitchen.

Zhou Ning put away his thoughts, looked at Bai Hua, smiled slightly and said:

"This calculation formula was taught by my teacher Li Chengbin. If Forensic Doctor Bai is interested, I will ask Zhao Xinli to transcribe it for you. There are many other related formulas."

Hearing Li Chengbin's name, Bai Hua was obviously taken aback, and sat on the chair directly. Seeing that she didn't say anything else, Zhou Ning said:

"I don't know if the body of the deceased has been preserved or has been disposed of?"

(End of this chapter)