novice forensic medicine

Chapter 161 Where's the babysitter?
On the wall next to the anti-theft door, at a height of one meter, there is a star drawn with chalk. Such a mark is generally a mark that a thief wants to steal.

I remember hearing what Master said before, they solved a case last winter, burglary and then murdered the owner of the house temporarily, and an inverted triangle was drawn in front of the owner's door at that time.

After interrogation, I found out that this is a common method in their business. The inverted triangle represents single women, X represents no one in the family, and ○ represents a permanent resident in the family.

After stepping on the site many times, if there is no change, you can start. Through that case, the anti-pickup brigade cracked several related cases in a row and destroyed several theft gangs. Could it be that Dong Chengwen's house was targeted by thieves?

Zhou Ning looked around, and saw a camera not far from the underground garage, facing the direction of the shutter door of Dong Chengwen's garage, and the right side was only about 100 meters away from the exit of the underground garage.

Turn around and look at the anti-theft door first. This anti-theft door is also a combination lock. As for the ground, it is very clean and there is almost no dust. I squatted down and observed carefully, and there were no remaining footprints, but only a few footprints under the garage shutter door.

At this moment, Yang Xuetong chased after him, as if he felt that his performance on the first day was not satisfactory, and he wanted to follow in Zhou Ning's footsteps at any time. After all, he wanted to integrate faster and follow Zhou Ning's rhythm.

"Leader!"

Zhou Ning waved his hand.

"Extract the footprints, and the fingerprints on the inside and outside of the anti-theft door. I didn't find a place to insert a key in the rolling shutter door. I guess there is a remote control lock outside. There will be buttons in the garage. I also extract fingerprints."

"Ok."

Yang Xuetong didn't talk nonsense, and quickly moved.

Zhou Ning just went upstairs, searched around and saw Xu Dayuan standing outside, in such weather, walking around the scene, his body was already soaked in sweat, Xu Dayuan was wiping his sweat, Xiao Zeng didn’t know when he came. People are talking about something.

"What did Zhou Xiaozhou discover?"

Zhou Ning walked up and handed over the splint in his hand. On it were the simple floor plans he had drawn. There were three in total, marking the layout from the first floor to the second floor.

"The fire started in the master bedroom. There is no dispute about this, but I looked at the first floor and the first floor and found that there are three exits in this villa. One is the main entrance and the other is behind the kitchen on the first floor. It is probably for taking out the garbage or the nanny It is used to clean up the courtyard. As for the garage on the first floor, it is directly connected to the underground parking lot.

In the restaurant, I found a finished cake tray on the floor, with a card on it, which said happy eighth wedding anniversary dear, I think I can find someone to check, who will go to Dong Chengwen and Fang Hua on June 6 Take the cake.

In addition, the garage was empty, and no car was found in the parking space above the villa. According to Dong Chengwen, he drove out on June 6 and came back 29 minutes later, but where was the car? "

Xu Dayuan nodded repeatedly.

"The car is at the Jingkou Sub-bureau, and they have sent it to the technical department. Later, I asked Zhenshan to check the cake shop. He brought people to Jingkou District soon. Liu Yufei called just now, and she sent an investigation report from the Jingkou Sub-bureau. Some details, including the building plan of the villa, even copied the surveillance video, and the person is coming soon."

As soon as the words were finished, a taxi stopped, and Liu Yufei came down from above. Xu Dayuan squinted his eyes. You must know that when Liu Yufei and Xu Kejiang walked, they were in their car, so they didn't send them back?

"Didn't send you off?"

Liu Yufei didn't show any expression, she just patted her pocket.

"The leader will reimburse the fare."

As he said that, he ran to several people and opened the notebook in his hand. There were several copies of surveillance video materials on it. Seeing that Zhou Ning had a hand-painted floor plan in his hand, he pointed to the floor plan and said:
"Their team's printer is not very easy to use, so I just copied it to the computer and brought it back. These monitoring numbers one and two are around the main entrance, and number three is the monitoring of the villa in the back. You can see the north of Dong Chengwen's house. Side yard wall, but not visible from inside the yard.

As for the rest, there are the gates of the community, the surrounding walls, and the underground parking lot. This is the monitoring of Dong Chengwen's garage. "

Zhou Ning looked at the last surveillance video, pointed and said:

"Did the people from Jingkou Sub-bureau say that there are any problems with these surveillance?"

"I asked, and said that nothing abnormal was found, but these monitoring have copied a month's data, that is, from June 6 to July 28."

Zhou Ning raised his mobile phone and showed several people the pattern he just took on the side of the anti-theft door of the garage.

"It was found outside the garage. It seems that it has been marked for a while. I remember Master said that a case was solved last year, and there was such a mark inside."

Xu Dayuan glanced at it and nodded repeatedly.

"Last year, a case was solved. There was indeed such a mark, a triangular circle with a cross, but there was never a star mark. Later, I will ask Fanba about the meaning of this mark. After the on-site investigation, it will be withdrawn." We will not go to the Jingkou sub-bureau.

Zhenshan went to investigate the cake shop, Xiao Zeng went to ask Da Zhao for a photo, and checked the information on the wine bottle, and Yu Fei went to check Dong Chengwen's social relations to see if he had any enemies.

A barrister who is so famous and involved in a murder case has no one to help except a cousin. According to Director Ma’s reaction, he may be tabooed by others because of his ruthless methods.

According to the findings we just investigated, if someone really threw the Molotov cocktail from the cloakroom on the north side, then Dong Chengwen's suspicion would be cleared, but who would want to do that?

What do you gain by doing this?Apart from seeking revenge, I can't think of a second one. After all, even if Dong Chengwen is sentenced to death, the property will still be given to the Dong family, so everyone hastened to move. "

Both Liu Yufei and Xiao Zeng quickly said yes, and Zhou Ning asked for a copy of the video, and the two drove away with someone. Da Zhao and the others also came down from upstairs, took off their survey suits, and followed each other in the water. Like the fish out, Xu Dayuan hung up the phone and glanced at it.

"You guys have worked hard, but hurry up and test the things you find. I saw a lot of fingerprints taken?"

Zhou Ning nodded.

"I have found some physical evidence and fingerprints, and I will submit them for inspection when I go back. The on-site investigator of the fire department, Xu Da, you'd better look for it. I want to simulate a fire scene in the laboratory. How much combustion accelerant can make the fire spread quickly, and Make it impossible for people to escape, and then compare it with the surveillance.”

Xu Dayuan patted Zhou Ning on the shoulder.

"Zhou Xiaozhou, you guys go back first. I'll go to the fire department. Don't worry about the project meeting. We'll wait for your test results to come out. Of course, if I can get in touch with the fire department, I'll go directly to the laboratory to find you. As for the second autopsy, I think Don’t worry, at least wait for me to go back and check the autopsy with you.”

Zhou Ning nodded, no nonsense, took Da Zhao and the others to leave first.

Back at the technical department, Da Zhao took Yang Xuetong to submit for inspection. In fact, he was also reporting to the laboratory. This is their second group.

Zhou Ning went directly to the laboratory, and Liu Yongxin hurried over.

"I heard from Director Pang that you took over an arson case, or a case that Jingkou District has already investigated?"

Zhou Ning nodded and told everything, including Li Chengbin's explanation. Liu Yongxin kept nodding his head and beckoned Xiaoqu to come over.

"You're a professional, hurry up and check the monitoring to see if there's anything missing. Can Mr. Xia simulate this fire scene?"

Xia Momo frowned, and looked at the floor plan drawn by Zhou Ning.

"I need accurate data, such as the area and height of the room, the distance between the courtyard wall and the villa, as well as the interior decoration and layout. Everything must be digitized before it can be analyzed."

Zhou Ning knew that this calculation is simple to say, but if the data is slightly different, the result will be very different, so he turned to look at Zhu Xingxing.

"Zhu Xingxing, go to the office and send all the files to the laboratory. I remember that there is a mobile hard disk in it, and there is a floor plan there, but this is a rough-made room. I don't know if it can be used."

Zhu Xingxing hurried to fetch it.

"The drawings of the rough house are also fine. After all, you have been to the site, and tell me carefully the differences between the locations of the various places and the rough house. We can make some changes. This is no problem."

The dossier was quickly retrieved, Zhu Xingxing looked interested, and followed Xia Momo to import various blueprints, document videos in the mobile hard disk, looked at the blueprints and recalled Zhou Ning, and found that Dong Chengwen did not make major changes to the villa , Let me talk about a few positions, especially the size of the open door opening in the cloakroom.

"In the cloakroom, are there no large pieces of glass and mirrors?"

"No, the remaining glass at the scene is the shards of the window and the shards of the green glass bottle. The glass on the dressing table was shattered in place and did not explode to the surroundings."

Momo Xia looked puzzled.

"It's very strange that there is no full-length mirror in such a large cloakroom. By the way, since there is a nanny's room on the lower floor of their house, where is the nanny?"

Zhou Ning paused.

That's right, such a big villa with an area of ​​more than [-] square meters. If you can afford such a villa and commemorate your eighth wedding anniversary, you can't ask your wife to clean the house and take care of the children, right?
(End of this chapter)