Chapter 137 Can’t see the driver’s face clearly

The next day, Zhou Ning hurried to the laboratory department. Before he could push the door in, Cui Lili opened the door.

"Good morning, Sister Cui!"

"I came early enough, and the results came out. CA125, carcinoembryonic antigen CEA, and squamous cell carcinoma antigen SCC were not found, but there is something special about the toxic reaction. You can see this for yourself."

With that said, Cui Lili threw the report into Zhou Ning's arms. He glanced through it quickly. After reading it, Zhou Ning's eyes widened in surprise.

The substances detected in the test are: coumarins and indandiones.

Then he listed a long list of trade names of drugs that may contain this toxin, including warfarin, warfarin, dalon, bromadiolone, warfarin, sodium dimethonium salt, and dimethonium chloride. Zhou Ning thought about it for a moment.

"The toxin content in the deceased Sister Cui's body was not high. What you are saying is that he was poisoned for a long time. Originally, this drug has a delaying effect, and the onset of symptoms usually occurs about a week after taking it. That can also explain the symptoms in the digestive tract and bronchus.

Symptoms of bleeding.”

"Last year, we did a test on a case. Brodiolone was used at that time. This kind of rodenticide is relatively easy to obtain. The murderer stole the drug from a pig farm."

Zhou Ning smiled gratefully at Cui Lili. Although Cui Lili was cold and stern on the surface, she never let slip when it came to laboratory tests.

"Thank you, Sister Cui. By the way, I'll give you this USB flash drive. Before I went abroad, a teacher of mine specialized in the testing and detection of poisons. He had some experience. He sent this to me a few days ago. They are some of the more advanced ones in the world.

Assay methods and comparison means.”

Cui Lili paused and reached out to take the USB flash drive.

"Thank you, I'll go back and have a look."

Zhou Ning didn't stay long and left directly. In fact, the contents of the USB flash drive were compiled by him using his memory to sort out the poison analysis learned in the system. After all, it was published in 2022. After all, it is more advanced tests and comparisons than now.

Right method.

Zhou Ning quickly came to the Criminal Police Brigade. The door of the conference room was wide open, and there were several people sitting inside. It was filled with smoke, and when he got close, his breathing felt blocked.

However, several case bags on the table caught Zhou Ning's attention, and Xu Dayuan waved his hand towards Zhou Ning.

"Come in and sit down, what do you find?"

Zhou Ning was not polite and went to open the window of the conference room, then returned to the table and placed a stack of reports in front of Xu Dayuan.

"A second inspection was conducted inside the deceased's vehicle. Except for the fingerprints of the deceased, no fingerprints of the second person were found. To be precise, except for the door, steering wheel, gear lever, and safety belt, no fingerprints were found. The interior of the vehicle was carefully cleaned.

Pass."

Xu Dayuan was startled. Although there was no substantial discovery in this news, it showed that the murderer or the person who planned all this had a strong sense of counter-reconnaissance and knew that leaving fingerprints would arouse suspicion.

"Awesome? Did you find anything else?"

Zhou Ning didn't answer. Instead, he opened all the case bags on the table. They had the names of major hospitals on them. They would give plastic or kraft paper bags like this when taking X-rays. Zhang Guanglei's name was written on each one. Apparently Zhang Guanglei had always been

I feel that I am sick and very sick.

"This was found in the deceased's house? Where was it hidden?"

Xiao Liu smiled, this girl has a quick tongue.

"I was just turning off the water valve, and I didn't search carefully. These things were hung behind the door of the second bedroom, blocked by some clothes and calendars, so I didn't find them."

Zhou Ning had already taken out various medical certificates and looked through them. The patient's main complaints were nosebleeds, headaches, stomachaches, coughing up blood, occasional blood in the stool, and hair loss since February 2010. After various examinations,

No organic disease was found.

Of course, the following are the diagnoses from major hospitals, and the contents are similar. Some doctors prescribed drugs that affect the nerves and protect the gastrointestinal mucosa, as well as drugs that relieve coughs and soothe smooth muscles. One doctor even suggested that he see a psychiatrist.

Zhou Ning put down these medical certificates and placed the laboratory reports in front of Xu Dayuan.

"It seems that the deceased discovered that his body was abnormal. The test results have just come out. The blood and organs in the deceased's heart contained coumarins and indandione substances, but the accumulated amount was not very large.

Oh, I forgot to introduce it. This drug is an anticoagulant rodenticide, such as warfarin and dalon. It is a poison that manifests chronic poisoning. It usually takes six or seven days to take effect.

Obviously, this poisoning process is very long, and the murderer does not want to be suspected. Judging from the time when he went for diagnosis, the deceased has at least noticed that his body is strange for more than a year. Without long-term close contact, the effect of the drug cannot be maintained like this.

of."

Xu Dayuan nodded.

"This analysis makes sense. It seems that we still need to look for clues from the private life of the deceased. Has Zhenshan responded to the news?"

Xiao Liu shook his head.

"No."

Zhou Ning rubbed his nose. He knew Xu Dayuan was anxious, but this was not a matter of urgency.

"Otherwise, I'll ask Da Zhao and Sun Gaotie to go to the deceased's home and check the fingerprints left at the scene."

Xu Dayuan nodded.

"Okay, Xiao Liuqian and Zhou Forensic Doctor will go to the technical office, and then Da Zhao and Xiao Sun will go to the deceased's home to have a look. The fingerprints on the car are so clean that there may not be anything left at home, but it's better to take a look and feel reassured. That's right.

Call the monitoring system and check with the community monitoring system. Is there any driving recorder or anything like that on the deceased’s car?”

Zhou Ning shook his head.

"No, I checked this right then and there."

"Okay, let's go ahead. Teacher Xia and his friends will tell me as soon as their animation comes out."

Zhou Ning didn't expect that Xu Dayuan still remembered this incident. He nodded and took Xiao Liu away. When they arrived at the technical office, Da Zhao and the others had come down. Actually, her name was Xiao Liu. She was two years older than Zhou Ning. Her real name was

Liu Yufei, it is definitely not easy for a girl to become a criminal police officer. I heard that few men in the team can beat Liu Yufei's skills.

"Forensic Doctor Zhou, I will take Da Zhao and the others there."

Saying goodbye to Liu Yufei, Zhou Ning went directly upstairs to the laboratory. Liu Yongxin stood next to the computer and said something to Xia Momo. Xia Momo's hands kept flying on the keyboard. The input speed was no worse than Xiaoqu. The faster

Discovering this, Zhou Ning felt even more ashamed of his original prejudice.

Opening the door gently and walking straight over, Xiaoqu saw Zhou Ning first.

"Forensic Doctor Zhou, you are here!"

Zhou Ning smiled and nodded. Xia Momo then noticed Zhou Ning and looked at him with a smile.

"Just in time, the animation has been completed. Based on the degree of damage to the vehicle and the distribution of forces in various aspects, we synthesized this animation. You can take a look first."

Zhou Ning walked closer and Xia Momo started to click play. On the screen, a black Sonata hit the street light pole. The first impact caused the upper part of the street light pole to break directly and fall into the distance.

Inside the car, the driver was lying on the steering wheel, and the sequence of fractures appeared. Of course, the fracture on the left temporal part was marked as an original fracture and was not recorded in this parameter.

The chest of the deceased was fixed by the steering wheel. Zhou Ning squinted his eyes. According to the degree of impact, even a comatose person might wake up, but the clamp was so tight that even if he wanted to call for help or escape, he would not be able to do it. After all, the mobile phone

not around.

At this moment, the rear of the Sonata was hit by a white Wrangler. The Wrangler was much taller than the Sonata, so the squeeze on the car in front was more severe. The Sonata's cab was shortened by half, and the front engine was completely covered.

lamp post.

Such a shock caused the broken lamp pole to fall off from the broken position, smash through the Sonata's windshield, and directly poke the deceased in the face.

However, the Wrangler driver behind was not as seriously injured as Zhang Guanglei. Why didn't he call the police or an ambulance immediately?

Zhou Ning was thinking about it when the Wrangler was hit sideways and the car's butt was thrown directly into the driveway. Then seven or eight cars appeared from behind and hit the Wrangler's car like dumplings.

Such a chain reaction was so rapid that Zhou Ning suddenly realized that if the Wrangler had escaped immediately, he might still have survived.

It can be seen that it is unlikely that the Wrangler deliberately hit Zhang Guanglei, and the sideways action is incredible.

After the animation demonstration, the Sonata was so compressed that the most important impact occurred in the last chain reaction. Of course, the Wrangler driver Sun Manqing also died due to the last impact.

"During this interval, did you check the sections of road that were not covered by heavy fog?"

Xia Momo smiled and rolled her eyes.

"I can't hide anything from you. We retrieved the road surveillance footage on the road section 100 meters east of the location of the accident. The vehicle speed and interval time were all obtained from that video. But what surprised me was that the last car

I couldn’t even see the driver clearly.”

Zhou Ning had a meal.

"What do you mean you can't see the driver clearly? Didn't you use our software to fix it?"
Chapter completed!