novice forensic medicine

Chapter 162 Conspiracy Theory

After four o'clock in the afternoon.

Xia Momo processed the simulation animation, from the window being smashed by a brick, to the burning of a Molotov cocktail in a cloakroom full of clothes without a glass door, it only takes five to six minutes to engulf the bed in the master bedroom.

Xu Dayuan came after hearing the news, and watched the animation again.

Afterwards, I saw several surveillance images around when the fire caught fire on June 6.

Comparing the time on the monitor, from 23:17, a faint smoke can be seen on the monitor, to 23:22 when flames continue to fly out of the window, it is indeed only 5 minutes.

The time when Dong Chengwen went out was at 23:03, and he drove back at 23:22. The car did not turn off, and he rushed into the villa after getting out of the car. After less than 5 minutes, he carried Dong Xiaomi and Fang Hua downstairs successively. , the onlookers began to gather.

Of course, Fang Hua was still on fire when he was carried down.

At 23:27, the firefighters took the man from the door, Dong Chengwen also collapsed on the ground, seemed to be crying, trembling all over, two ambulances drove away with three people, Dong Xiaomi and Fang Hua were in the first car In the car, Dong Chengwen was in the car behind.

The police car did not arrive at the scene until 23:40, and all the onlookers were evacuated to control the order of the scene. At this time, the fire was basically under control. At 00:28, the people from the fire brigade evacuated, and all the onlookers left. Only the people from the Jingkou branch were in Protect the scene.

"I didn't expect that such a fire could be caused by only one incendiary bottle. According to the judgment of the Jingkou Branch, the judgment that the compound aromatic hydrocarbons were collected in the room is correct."

Liu Yongxin nodded.

"A 750ml wine bottle filled with gasoline is powerful enough to ignite and throw it in. The laboratory found glass shards on the bricks, which can prove that the bricks were used to smash glass windows."

Xu Dayuan turned on his phone, found some pictures, and handed them to Zhou Ning and Liu Yongxin.

"Just now we asked the fire brigade of Jingkou District, and they gave some photos when they entered the scene, which also confirmed our judgment. The glass windows were broken during the fire, usually facing outward or on the spot, and would not splash indoors. At a distance of more than two meters, even if there is debris, if the temperature reaches a certain level, these will have melted long ago."

Momo Xia leaned over.

"Where is the nanny, have you found it?"

"I didn't find it. The Jingkou Sub-bureau did not investigate this point, but according to the neighbors' feedback, Dong Chengwen's family used to have a nanny who worked for many years. She was a 40-year-old woman with a fat Yuntai accent.

When picking up the children back and forth, they still heard the nanny speak English, and the pronunciation was very standard. This needs to check the person's appearance characteristics from the surveillance before further investigation. "

Zhou Ning didn't have many surprises. After all, in Shanghai, there are many nannies who are foreign students, and the salary is quite high. They are educated and can tutor the children, and they can also help the family as a nutritionist. Dong Chengwen's family is not short of this money.

At this moment, Xu Dayuan's phone rang, and it was Tao Zhenshan who called, and after saying a few words, he hung up.

"At 6:29 on June 13, Dong Chengwen went to the Black Swan Cake Shop to pick up the cake. This was ordered by his assistant Yu Xiaoou four days ago. He also specifically told not to put mango and mango sauce, saying that a child was allergic to mango. , they have records of this.

Oh, the clerk also said that when Dong Chengwen passed by, he was holding the flowers from the next door in his hand. Of course, the flowers were also ordered by Yu Xiaoou, and he seemed in a hurry, but the parking space in front of their store was tight, so they had to pull over temporarily. Someone was honking, but they were very polite. "

Liu Yongxin blinked.

"Careful enough, I don't even know what my wife is allergic to. I'm ashamed. It seems that he attaches great importance to this anniversary."

Xu Dayuan nodded.

At this moment, the door of the room was pushed open, and Da Zhao hurried in, holding a test sheet in his hand, ran to Zhou Ning and handed the report to Zhou Ning, his small eyes widened, apparently found something special Content.

"On the cake box that Zhou Xiaozhou found, some residue was extracted. After testing, it was found that there were ingredients such as chocolate, cream, strawberries, etc., but there is another thing, you can't guess what it is?"

Xu Dayuan raised his leg, kicked Da Zhao on the back, glared at him and said:

"I'm so anxious here, are you still in the mood to play guessing games? What's in Zhou Xiaozhou?"

Zhou Ning turned over the report and was shocked.

"Diazepam is the ingredient of stability."

"Sleeping pills?"

Liu Yongxin came over, glanced at the contents of the report, and then at the photos taken by Zhou Ning on the spot.

"The content is so high, it seems that it was injected into the cake from the side, and the surface is decorated with cream. If Zakong is easy to find, I think it should be diazepam injection injected from the side, and the amount is not small. Rushed so a lot left on the top of the cake tray."

This analysis, Zhou Ning is approved.

"The dosage of diazepam for children should not exceed 10ml at most. Adults exceeding 25ml will also be poisoned, which can cause respiratory depression and cause respiratory arrest. This content can be found on the cake tray, so the amount put into the cake will be very large."

"This stuff is very bitter, won't you notice something strange in your mouth?"

Zhou Ning shook his head.

"Chocolate cakes with natural cocoa butter generally have a bitter taste, and the bitterness of the medicine will be masked."

Xu Dayuan rubbed his chin, these discoveries changed the nature of the case.

"Shortly, at noon on June 6, Dong Chengwen went to pick up flowers and cakes. Obviously, this was not eaten at noon. After eating cakes at night, Fang Hua and Dong Xiaomi were anesthetized and their consciousness was not very clear, so the window They didn't respond to being smashed or even thrown into a Molotov cocktail.

It seems that we have to wait for the results of Liu Yufei's investigation. All the evidence provided in the dossier brought back from the Jingkou Sub-bureau needs to be reconfirmed. Visit all the villas around your home.

There are two main parts of the investigation. One is to ask the nannies of the neighbors, who knows the nannies of the deceased, and their contact information. The other is whether Dong Chengwen was taken away by the police or by an ambulance after he rescued the victim. ? "

Zhou Ning glanced at the file, it was recorded that Dong Chengwen was taken to the hospital.

However, according to what He Shancun said, Fang Hua's mother and daughter were sent to the hospital, and Dong Chengwen was not admitted. When he woke up, he found himself in the hospital. He had no memory from the time he finished saving the patient to when he woke up.

It is true that there are discrepancies in the dossier, but there is still one problem, Zhou Ning called Xu Dayuan to stop.

"Xu Da, there is no mention of mobile phones in the dossier. The mobile phones of the deceased Fang Hua and Dong Chengwen were not found at the scene, and Dong Chengwen's car was still not delivered."

Xu Dayuan nodded.

"I know. They said they couldn't find the phone. I asked Zhenshan to retrieve the call records in a while. Before I came to you, I urged Xu Kejiang again. He said that the trailer was already on the road, but he couldn't use the tunnel. Come over at high speed, but according to the time he said, the car should have arrived."

Xiao Qu raised his hand. Although he always speaks little, he still took the initiative to speak when it came to his professional aspects.

"Don't raise your hand, just speak up."

Xu Dayuan's words made Xiaoqu quickly take a step forward, he pointed to the computer and said.

"Can you give me your mobile phone number first? I can use the mobile phone number to check the various social accounts they have registered, such as chat software such as QQ, first crack the password, export the chat content inside, and even the transmitted Files can also be found, and of course there are shopping records, which are platforms such as Taobao.”

Xu Dayuan smiled, leaned in front of Xiaoqu, and patted him on the shoulder.

"I have the number. I just wanted to find the people from the information department. It seems that I don't need it. You said it took too much time for them to decipher it."

Xiaoqu nodded.

"It's very troublesome. I'll work hard tonight and try to finish cracking it tomorrow."

"Old Liu, it seems that I want to invite you to have a good meal. Xiaoqu, please make a note of the phone number, and stop talking nonsense. I will go to work first, and we will talk about everything at the special project meeting tomorrow."

Xu Dayuan left his phone number and left with his people. Da Zhao blinked and looked at Xiao Qu.

"Are you stupid, let the people in the information department do it, let's talk about it if you can't do it well, can't all the work be left in our laboratory?"

Xiao Quhan smiled and shook his head.

"It's actually not too much trouble, but you didn't find the burned mobile phone parts at the scene?"

Da Zhao waved his hand, grabbed a bottle of mineral water, and drank it all with his head raised.

"What are you looking for? I wish I could have been sieved through a sieve at the scene. We found that these things were either stuck under the floor or splashed into the corner of the wall. It seemed that a cake box was on the surface. In fact, such a second case is even more difficult to solve."

Liu Yongxin nodded at the side, agreeing with Da Zhao's words.

"It's hard to make raw rice. According to what you said, although the investigation in Jingkou District was done, it was limited in capacity, but they also destroyed the scene, which added a lot of trouble to the follow-up investigation. But when you went to the detention center, Dong Didn't Chengwen say anything about the cake?"

Zhou Ning shook his head, sighed and looked out the window.

"I have a feeling that this Dong is not telling the truth."

Da Zhao gave a blank look, stretched out his fingers, and kept pawing and saying:

"It's not my conspiracy theory. His location and identity determine his lifestyle. There must be concealment. He has to pretend to be a good husband and father in front of us, so that you can sympathize with him, work hard to solve this case, and think about it unconsciously. To prove his innocence.

As far as his net worth is concerned, I can check it on the Internet. He conservatively estimates several million in the account a year. As for the few famous economic cases he handled, the prices are not announced. Do you think they lack women?
It's just that they need to create such an identity. In the eyes of customers and peers, they are a person who takes care of business and family. This is good for his image. As far as his methods are not ruthless enough, none of his peers will come out. Voicing? "

(End of this chapter)