An hour later, the car arrived in Hai'an City.

On the way, Xu Dayuan had already received a few phone calls, and he also reported the details of the two cases in Rudong City to Hu Ju, and of course, when it was over, Xu Dayuan told the fat man about it.

Hu Ju was silent for a long time, then agreed to Xu Dayuan's arrangement and put the case on the last trip of the working group.

As soon as the car stopped, there were already many people standing in front of the door, and you can see the police rank that this is the leaders of the Hai'an Municipal Bureau, such a warm treatment, compared with Rudong City, the gap is really big.

The captain of this criminal police team is called Zhang Chunbo, and Xu Dayuan seems to be very familiar, the two chatted for a few words, and then greeted everyone, Xu Dayuan said two words briefly, there is only one purpose, they came to clean up the backlog of cases, work first, and persuade everyone to leave.

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

"Don't be surprised, we've been waiting for you to come over for a long time, I asked people to stay at the Rudong City Bureau last night, I have first-hand information about the progress of your investigation, and I think I should be able to come today, so just get everyone here, let's analyze the case, right?"

Looking at Zhang Chunbo with an enthusiastic face, Xu Dayuan was also a little helpless.

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

Zhang Chunbo waved his hand, looking unconcerned.

"What are you resting, after investigating these cases, wouldn't it be nice to go back to your own house to rest? It's not what you mean, when I arrived in Rudong, it was said that the construction started on the same day, why am I here to do something? ”

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, and looked stunned.

"You don't have two backlogs of cases, why are there three files here?"

Zhang Chunbo grinned.

"Leader, don't get excited, it is true that there are two backlog cases, and the other is a case that we are investigating now, and the identity of the deceased has not been found, this is not that I heard that you brought Director Zhou over, so I think it is better to take it out and help us determine it together, so that we also have a direction for investigation."

After all, the identity of the deceased is about to be clarified, and the investigation of this case is clear, or let's look at the case from more than two years ago? ”

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

"Tell us about the case."

Zhang Chunbo opened the notebook and said busily:

"The first is the 8.14 2011 case of destroying the door, the case occurred in Jiaotuan [tuǎn] village, Baishahe street, early in the morning of August 14, Jiaotuan village clerk reported that they Jiaotuan Village Wang Hongzhan's family died, and our criminal police team arrived at the scene at 8:22.

After the forensic doctor Bai Hua led people to investigate the scene, it was found that there was a deceased in the middle of the courtyard, it was Wang Hongzhan's wife He Dongmei, her head was facing the direction of the courtyard gate, lying on the ground pronely, with a knife stuck in her back, piercing her heart.

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 courtyard was in a sealed state, the courtyard door was locked from the inside, and there was a ten-centimeter hole in the gate for unlocking and bolting the door.

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As for all the windows, there are guardrails, so no one can enter or exit, and the only one that does not have a guardrail is the kitchen window, but adults can't pass through, and we guess that the murderer is a skinny adult, or a tall and skinny 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 all the year round, and came back for more than ten days every year for the Chinese New Year.

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

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

The diameter of the pickle jar is 45 centimeters, the height is 45 centimeters, the neighbors reacted that this is the Wang family used to make pickles, but after the death of the old man of the Wang family, it has not been used again, He Dongmei was born on May 22, 1980, is a teacher of the sixth primary school in Hai'an City, is modest, and has no grudges.

Usually He Dongmei lives in the city with her children, the parents of the Wang family live in this old house, after the death of the old couple in a car accident in 2009, they did not come back, but in July last year, they notified this side to survey, so that the family can keep people, He Dongmei came back with the children, and also helped the children in the village to make up classes for free.

After visiting, we found two theories, saying that Wang Hongzhan may have offended people and left Hai'an City, but our investigation found that Wang Hongzhan is a very powerful person in IT, and he is preparing to buy a house in Shenzhen and move his family over, but he didn't expect this to happen.

There was also an old man's reaction, saying that it was the sudden death of the Wang family's parents, and he didn't leave anything at all, but the Wang family used to be the largest landlord in Jiaotuan Village, and all the land in this village belonged to theirs.

However, we thoroughly searched the old house of the Wang family many times, and did not find any hidden gold bars or any effective clues, but found two footprints on the side of the flowers on the edge of the west wall.

One of the footprints is very complete, there is still dirt underneath, we have brought it back for a sample, as for the old house of Wang Hongzhan's family, Wang Hongzhan left the key, except for us no one has been there this year, Wang Hongzhan himself We have also investigated, he has a good relationship with his wife, he is a classmate in junior high school, and there is no affair. ”

"Was the deceased's mobile phone left at the scene, the last call record on it, and whether there were any clues on the text message?"

Zhang Chunbo nodded.

"There are mobile phones, call records have been verified one by one, they are all colleagues and relatives, there are no special contacts, people who have called within a week, we have all contacted, and we have also investigated the time of death of the deceased and their activity trajectory, and no valuable information has been found."

Xu Dayuan kept recording, on the big screen, it was the scene investigation, the photos taken, it can be said to be quite detailed, when the photo stopped on the footprints, Da Zhao raised his hand and shouted to stop.

A middle-aged eldest sister who controls the computer raised her eyes to look at Da Zhao, obviously she was the local forensic doctor Bai Hua.

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A female forensic doctor can carry the work 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 of the scene are so detailed, she really did her best.

Da Zhao stood up and gestured with his thumb and forefinger.

"Can the white forensic doctor enlarge the picture, it's the kind of footprints on the soles of the screen, I want to see the pattern of the soles."

Bai Hua nodded, and said as he enlarged:

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

Jiaotuan Village is not a surplus village, and those who can afford to wear such shoes should be at least fashionable young people, and all the young people who have been in and out of Jiaotuan Village on August 13-14 have been screened, but there is no consistent result. ”

Da Zhao didn't panic at all, and nodded at Bai Hua with a smile.

"Forensic doctor Bai has done a very meticulous job, just now Captain Zhang said 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 asked like this, which caused Xu Dayuan to also look sideways, usually Zhao Xinli is still very modest, unless he finds something, and Zhou Ning didn't move, obviously supporting Da Zhao's approach, Xu Dayuan also took the opportunity to look at the forensic Bai Hua.

She nodded.

"Wait a minute for me to get it, this one is kept in an airtight cover to prevent it from drying and keep it humid."

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

He is used to it, and likes to use that LED magnifying glass to observe the details, but since Da Zhao wants to see it, he must have made a discovery, Zhou Ning is not in a hurry, he waited for a long time, everyone stared at Da Zhao's movements, and saw that he kept calculating what was written on the paper, and then stopped his pen and said:

"Forensic doctor Bai, I want to ask, during the on-site investigation, whether the distance between the two footprints was measured, can you tell me the value?"

White birch flipped over.

"Stride length 97 centimeters."

Da Zhao calculated again, and then stopped.

"According to the depth of the footprints in the soil, the size of the footprints, the shape, the distribution position of the force points, the stride length, etc., I estimated the height and weight of the suspect who left the footprints, and the weight of the suspect was about 150 pounds, and the height was estimated to be between 175-180.

From the footprints, it can be seen that the suspect's foot is slightly larger than the shoe, and at the edge of the toe, the marks of the pressure are heavy, especially at the thumb and metatarsal joints, and I think the normal size of the murderer's foot is 44 yards, with a hallux valgus of more than 20 degrees. ”

Such an analysis made Xu Dayuan look sideways, he subconsciously looked at Zhou Ning, Zhou Ning nodded solemnly, and recognized Da Zhao's judgment.

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

"Is there a formula?"

Da Zhao nodded, and handed the piece of paper he had just calculated to Bai Hua, who was still frowning after reading it, obviously not approving of this method.

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Zhou Ning understands this kind of gaze too well, this is because he thinks that Zhao Xinli is young, he doesn't look like he has a convincing face, it's not that kind of Mediterranean hairstyle, and he doesn't have an age of more than forty, Zhou Ning doesn't care, he knows that Da Zhao won't care either.

In fact, this case is strange enough, he doesn't live in the old house all the year round, he only came back for more than a month, and he tutored the children in the village every day, and was killed overnight.

Especially when a child is drowned in a water tank, is it seeking revenge or seeking money?

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

The deceased was stabbed in the back of the heart in the direction of the courtyard gate, and in the photo, the deceased was wearing a cool nightdress, and there were no shoes on his feet or around the corpse.

The inside of the courtyard door is locked, there is no trace of picking the lock, it doesn't look like he came in from the main entrance, it is estimated that because of this, the people of the Hai'an Criminal Police Brigade think that the murderer came in through the small kitchen window.

Zhou Ning put away his thoughts, looked at Bai Hua, and said with a slight smile:

"This kind of calculation formula was taught by my teacher Li Chengbin, if Bai Forensic Medicine is interested, then ask Zhao Xinli to transcribe a copy for you, there are many related formulas."

Hearing Li Chengbin's name, Bai Hua was obviously stunned, sat directly on the chair, and saw that she didn't say anything more, Zhou Ning said:

"I wonder if the body of the deceased has been kept or has it been disposed of?"