novice forensic medicine

Xu Dayuan nodded.

"It's not a waste of time. Liu Yufei called just now. The bodies of the three deceased have not been preserved and have been cremated. This makes it more difficult for us. Let's go and see how Zhou Xiaozhou's place is going. I didn't come out for lunch. ?"

Da Zhao shook his head.

"I didn't dare to bring the boxed lunch in. I left it at the door. I just asked Xiao Qu to take a look. He took the boxed lunch in and ate it, but no one came out. Xiao Qu looked at the door for a while, and said that it was densely written on the whiteboard. Analyze the commonality of the three deceased."

Xu Dayuan had already grasped the doorknob of Zhou Ning's office, but he stopped and turned his head to look at Da Zhao.

"Zhou Xiaozhou, you can't help here, you didn't follow the investigation, you didn't go to the interrogation, what did you do just now?"

Da Zhao was taken aback for a moment, his neck was straightened, and his face was innocent.

"Leader, you and I are not idle. Didn't you follow Xiaoqu to inquire about the Haichanglong Group? This group is very interesting. After Zhu Kelin took over, the original industrial property was sold, and the entrusted management was entrusted. Now there are only two parts left, one is real estate and the other is trading company.

According to what Li Fang’s sister Li Hua said, Hai Changlong was acquired by Zhu Kelin in the name of insolvency. We did some research and found that Hai Changlong was insolvency in 13. all.

Then Haichanglong began to be injected with more than 4000 million yuan, and even bought a lot of land to enter the real estate industry. Moreover, the Liuyuan community where the No. [-] deceased participated was developed by Haichanglong. Reconstruction of bridges and old houses.

By the way, the municipal project that No. [-] deceased Yu Guangyao participated in was part of the project subcontracted out by their group. However, even if Yu Guangyao was killed, he was suspected of bribery, but Hai Changlong was not affected. "

Xu Dayuan paused, he didn't expect Da Zhao and the others to have such a discovery.

Just about to speak, the door was opened, and Zhou Ning came out.

"Zhou Xiaozhou, have you had lunch?"

Da Zhao grinned and bumped Zhou Ning on the shoulder.

"Our leader's concern is a little hypocritical. The inquiries here are over. How are you doing here?"

Zhou Ning stepped aside to open the door, Xu Dayuan and the others walked into the room, and the three walked to the whiteboard together, Zhou Ning took a sip of water before speaking.

"I compared the causes of death of the three deceased, the conditions of the scene where the corpses were thrown, the features, the location of the crime, and the state of the severed head, and found some problems.

You see, plastic sheeting was spread under the bodies of the three deceased. There was dew and rain on the plastic sheeting, but there were not many blood stains. This means that the heads of the three were all cut off and bloodletted before being transferred to the scene of the corpse dumping. , and no blood spatter was found on the clothes of the three of them.

Although there was pulmonary edema, I think that the death of No. [-] died of mechanical suffocation, and the death of No. [-] was drowning. As for the cause of death of No. [-], I tend to overdose insulin. See here. During the autopsy of Bai Hua, it was found that the outside of the upper arm of the deceased There are pinholes.

At that time, the area was not sectioned for local drug analysis, but the blood sugar of the deceased was 2.7. I don’t think it was caused by starvation, because excessive starvation will cause blood sugar to rise, which is called Somogyi phenomenon in clinical practice. "

Xu Dayuan paused.

"You mean, Zhang Qiujian, the third deceased, died because of an overdose of insulin?"

Zhou Ning nodded.

"I remember that Li Fang's younger sister, Li Hua, is a nurse in the emergency department. Did she and that Zhu Yufen come over this afternoon?"

"It's not here yet. Xiaobai has picked up Li Hua. I'll pick up Zhu Yufen on the way. I'll come over later. You can continue to talk about your discovery."

Zhou Ning hummed and pointed to the place where the three of them threw their bodies.

"Let's talk about the place where the body was dumped. The No. [-] deceased, Zheng Chuguang, was placed on the opposite bank under the bridge where Li Fang fell to his death. There were no scratches on the body of the deceased, and there were indentations on the left and right armpits. The pattern is not clear, but the thread shape can be seen. I think this It was caused by lowering the deceased to the bottom of the bridge with ropes.

The murderer had a transport vehicle, and fixed it with a rope tied to the vehicle, and lowered the deceased and the murderer from the edge of the embankment. Afterwards, the murderer put the deceased in a posture and walked up the rope. It rained the day before the deceased was found, so there were no traces on the ground.

As for the second deceased, Yu Guangyao, he was placed on the back seat of the car, and the car was parked in the backyard of the Cultural Palace. Although there is a hotel on the north side of this place, there is no surveillance, and there is no guard. The driver's seat is obviously farther forward than the co-pilot's chair.

With the deceased’s height of 185 and weight of 178, this space is definitely not enough for him. According to the distance shown on the scale, the front of the seat is almost vertically fitted. Da Zhao once said that Zhu Xingxing’s driving habits, I think many women Like this adjustment? "

Da Zhao took a closer look, then nodded repeatedly.

"At this distance, Zhou Xiaozhou can't even stretch his legs. I think the person driving the vehicle at the end is similar in height and body to Zhu Xingxing. He is less than 162cm tall and weighs less than 90kg. There is another possibility."

Da Zhao suddenly stopped and looked at the two of them.

"There is also a possibility that when the murderer left on purpose, he adjusted the seat to confuse the police and let us focus on women. But was the interior of the vehicle not inspected? I didn't see the investigation report. Speaking of finding the second person's fingerprints in the car?"

Zhou Ning frowned, but nodded.

"As Da Zhao said, this cannot be ruled out. I read the survey report carefully. The vehicle survey was carried out six times. Fingerprints were checked wherever the hands could touch. The vehicle was carefully cleaned, and the underside of the seat was clean. , only the fingerprints of the deceased and some glove prints were found."

Xu Dayuan rubbed his chin and said:
"You mean, the murderer was able to get close to Yu Guangyao's vehicle. Before Yu Guangyao died, he specially cleaned and scrubbed the interior of the car carefully. When he sent the deceased to the backyard of the Cultural Palace, he also wore gloves, so no fingerprints were left. .”

Zhou Ning nodded, Da Zhao had already taken down the photo, and looked at his hand according to the scale. This size was a circle thicker than his fingertips, corresponding to the distribution of finger prints, Da Zhao looked surprised.

"Although it is a glove fingerprint, it can be distinguished that this is the characteristic of male fingers. Even if my hand is big, this person's hand is bigger than mine, and the fingers are thicker."

At some point, Liu Yongxin came in, took the photo in Da Zhao's hand, looked at it carefully, took the pen in Zhou Ning's hand, pointed to the fingerprints of a few gloves and said:

"Do you see any problems with this fingerprint? There is a gap between the force point of the finger pad and the second segment, and the finger pad is thicker and rounder than the second segment, and deeper nail marks can be clearly seen at the tip."

Following Liu Yongxin's prompt, Zhou Ning carefully observed the photo, then raised his hand and slightly bent the first joint of his finger. Zhou Ning paused, raised his head and said in surprise:

"Clubbing, master, are you saying that this person has clubbing?"

Liu Yongxin nodded.

"The photo is not clear, but it can be judged from these fingerprints that this person has clubbed fingers. I have handled a case before, and the murderer left such fingerprints. I consulted with experts from the First Affiliated Hospital of Qindao at that time. , and finally checked that man and found that he had early-stage lung cancer.”

Xu Dayuan was also a little surprised, this discovery can be regarded as a kind of discovery, but after thinking about it, it seems that no one with such fingers has been found, so he hurriedly asked:
"You mean, at least the murderer who left traces in the car of the second deceased may be a male with clubbed fingers and may be an early stage lung cancer patient?
The case of Yu Guangyao happened in 2000, and it has been 12 years. The early stage of lung cancer is enough to live to this time, right? "

Zhou Ning shook his head.

"Finger clubbing is not necessarily lung cancer. Cardiac disease, respiratory disease, digestive system disease, chronic poisoning, etc. cause fingertip tissue hyperplasia, but finger clubbing is one of the most common extrapulmonary signs in lung cancer.

Moreover, clubbing generally does not form suddenly in a short period of time. If clubbing occurs on one limb or a single finger, it is usually related to nearby vascular lesions. However, looking at the distribution of this fingerprint, all fingers of this person are have this feature. "

Xu Dayuan smiled.

"Never mind anything else, at least one of the traits of the murderer has been found. This person has clubbed fingers."

Several people nodded, and Zhou Ning continued:

"Then I will continue. Zhang Qiujian, the No. [-] deceased, was found on the roof of Building No. [-] in Liuyuan Community. I won't talk about the same place as the first two deceased. I studied the investigation report, which said that he arrived at Building No. [-]." On the roof, you need to go up from the skylight at the top of the three units.

The height of the skylight from the top floor is 3.3 meters. The abdominal circumference of the third deceased was three feet four. The size of the skylight was 70*70 cm, and he could not be dragged up to the top floor. According to the autopsy report, I also found threads in Zhang Qiujian’s armpit. The imprint is also very light.

Also, under the skylight, there is no mark of the ladder left, and on the walls and metal handrails, there are finger marks of grips. You can see that the finger marks are exactly the same size as those left on Yu Guangyao's car of the second deceased.

Zhang Qiujian's body was discovered on March 2006, 3. People who don't work outdoors don't wear a lot of clothes, but those who work outdoors still wear down jackets. I think that's how the down jackets in Zhang Qiujian's respiratory tract come from.

Let’s look back at the death of Zheng Chuguang, the first deceased who died of mechanical suffocation, the second deceased Yu Guangyao who drowned, and the third deceased Zhang Qiujian who died of mechanical asphyxiation. Whether it was suffocation or drowning, they would not die without struggle, but they had no resistance injuries. Does that mean that they lost consciousness before dying? "

Liu Yongxin narrowed his eyes slightly.

"You think they were drugged or stunned, but the poison test found nothing abnormal."

Zhou Ning shook his head.

"It was because no abnormalities were found in the poison test. I ruled this out. After all, the operation of covering the face with ether is impossible to make Yu Guangyao and Zhang Qiujian's weight suddenly faint.

Then their hands will subconsciously scratch and there will be residues, or clean up the residues, and I think they have been hit hard on the head, or they have been electrocuted in the head. "