Criminal Psychology

Xing Cong let go of his chopsticks, and the chicken leg he had just picked up fell down with a bang.The soup splashed, Wang Chao was dumbfounded, Zheng Xiaoming also seemed to have noticed something unusual, and looked at them in confusion.

Lin Chen felt a little uncomfortable, but he still touched Zheng Xiaoming's head with one hand in relief, stood up, and told Wang Chao, "We may not be able to come back in a while, you wait for Xiaoming's parents to pick him up." After he finished speaking, Zheng Xiaoming Xiao Ming still held his hand.

Lin Chen touched the little fat man's face, and said in relief, "Your mother has my phone number, if you want to see me, you can ask her to call me."

Lin Chen said so, and Xing Conglian left the cafeteria and went to the forensics department together.

Along the way, they walked side by side, and the police officer who came to deliver the inspection report was very happy and kept saying, "Captain, this is a major discovery. The forensic doctor suspects that the suspect may have accidentally cut his hand during the murder, so Put your own blood on it, even after swabbing, DNA samples can still be detected."

"Hmm." Xing Conglian didn't respond, but said lightly.

Instead, the police officer became more energetic: "So the reason why he wanted to let go of the murder weapon was also because it was stained with his own blood, so the murder weapon must be destroyed?"

Xing Conglian didn't talk to him, and the police officer said to himself: "Speaking of which, Duan Wanshan is also very strange. I just checked his personal information briefly. He used to be a university professor of medicine, and he was quite famous. It seems that he resigned and went abroad, so there is no record. His nationality is still in our country, but why did he enter the country suddenly, and he wanted to kill Dr. Stankham, I will go to the immigration to check his entry records."

Xing Conglian didn't speak, and Lin Chen walked behind.

It was already dark outside the window, and the air conditioner in the corridor was turned on very low, so he couldn't help coughing slightly.

Probably seeing his ugly face, Xing Conglian asked, "Does the wound hurt?"

"No." Lin Chen said.

"I'll take you back to the hospital first, and I'll check it out later, and I'll tell you the result as soon as possible?" Xing Conglian looked worried. If there weren't other police officers around, Xing Conglian would stop and hug him .

Lin Chen knew that his current condition was not very good, but he still insisted: "I've been here for so long, it's not too late, let's go to the forensics department first."

Xing Conglian put his hand on his forehead and frowned: "It's a little hot."

"I think it's okay. I just had a meal and my body temperature is normal."

"You haven't taken the X-ray yet, have you?" Xing Conglian asked.

"That's all it takes." Lin Chen said.

"I'll take pictures when I get back, I'm afraid you will have a lung infection." Xing Conglian said seriously.

Lin Chen nodded.

The police officer who led the way turned around again: "Consultant Lin, if you are not in good health, you have to be hospitalized. Now that the case has made a breakthrough, you don't have to stare at it so closely. Take a good rest. Your body is the capital of revolution." .”

Lin Chen shook his head, not knowing how to answer.

……

Most of the people in the entire forensics department were not off work, and the lights in the department were brightly lit.

Because the results have just been released and a DNA sample match has been found, many people are in a good mood when they hear the news.

Xing Conglian greeted the police officers inside, found a chair to sit down, and asked, "Where is the progress?"

The policeman from the forensic department replied: "The DNA results from the forensic doctor are out. Now we are going to compare the fingerprints on Stankang's notebook and the fingerprints extracted from the tape with the fingerprints of the suspect Duan Wanshan..."

"Isn't it true that the fingerprints on the notebook didn't find out who belonged to them at the beginning? Since we don't have Duan Wanshan's fingerprints in our library, where can we find someone for comparison?" Xing Conglian asked.

"We have just called Duan Wanshan's former workplace, which is Yongchuan Medical College, and asked if they have relevant records."

"After so many years, Yongchuan Medical College can still keep the fingerprint records of former employees?"

"What if, right, captain." The policeman said with a smile.

Suddenly, the fax machine in the forensics department beeped.

Someone picked up the faxed content and shouted: "Comrade Xiao Zhang, your fingerprints are here!"

Lin Chen and Xing Conglian looked at each other.

Police officer Xiao Zhang excitedly ran to the fax machine, took a look at the contents of the fax, and turned to him and said, "Captain, the laboratory where Duan Wanshan once led Yongchuan Medical College still has his fingerprint records, only his thumb, But it's enough." While talking, Xiao Zhang opened his mailbox, and an email lay there quietly.

Police officer Xiao Zhang quickly operated the computer and compared the fingerprints in the mail with the two sets of fingerprints found on the notebook and the plastic bag.

Lin Chen lowered his head, for some reason, his heart beat a little faster.

The results came out quickly, the printer creaked, and the little police officer pulled out the paper and walked towards them.

"How is it?" Xing Conglian asked.

A smile appeared on Xiao Zhang's face. He grinned and was very happy to report: "Captain, the 14 feature points match. It can be concluded that the fingerprints found on the deceased's notebook and the bag containing the murder weapon belong to Duan Wanshan himself!"

Lin Chen raised his head suddenly, his heart trembling.

Duan Wanshan had died in the Dana Rainforest. He saw this with his own eyes. Now, the other party's DNA samples and fingerprints reappeared. What is going on?

The forensic core whispered, as if he was very happy to confirm the suspect.

"Captain, what should we do next?" Officer Zhang asked.

Xing Conglian seldom had this kind of moment when he was asked to be speechless. The eyes around him seemed to be expecting Xing Conglian to issue an order to arrest the suspect: "Wait a minute, I have a few questions." After clearing his mind, he spoke.

"The first question is why two DNA samples were found on the murder weapon." He asked.

"The second DNA sample was found on the handle of the knife." Another person replied, "So we suspect that the suspect accidentally cut his hand during the attack..."

"I know this." Xing Conglian interrupted the other party, "Are you sure it's a DNA sample from blood, not some other cell tissue?"

"Yes." The police officer who came to deliver the report nodded.

Xing Conglian turned his head and asked the other party: "Second question, why do we have Duan Wanshan's DNA sample, and quickly get the comparison result, what happened to him before?"

"It doesn't seem to be..." The other party replied, "I'll check it out later."

Lin Chen frowned. This is really strange. You must know that citizens' DNA samples belong to personal privacy, and the cost of testing is relatively high. Unless there is a crime or some special circumstances, it is impossible to be recorded.Contemplating the possibility that Duan Wanshan's DNA samples might appear in the citizen's gene bank, he asked, "Or the victim of what case?"

"That's not clear, I'll ask right now."

"no need!"

There was a soft sound at the door, and Lin Chen followed the sound, only to see Chao Chao standing at the door with his mobile phone.

After the young man said the three words "no need" handsomely, he bent over and trotted over, and reported to him first: "Brother Ah Chen, Xiao Ming's father has already picked up my younger brother."

"Thank you." Lin Chen said.

"Ah Chen, you're being polite again, that's my younger brother." Wang Chao said, took the inspection report, took out his mobile phone, and quickly answered Xing Conglian's question just now, "Teacher Duan's DNA sample appeared in Citizen The reason for the gene pool is..." He suddenly looked up, "Is it because of the Thousand Genomes Project?"

"Speak human." Xing Conglian said.

"I don't quite understand either." Chao Chao was unusually humble. He licked his fingers, began to tap on the screen of the mobile phone quickly, and then read word by word: "The "International Collaboration Group" composed of scientists from all over the world, 2008 1 On March 22, it was announced at the same time that the international "Thousand Genomes Project" was officially launched. This grand plan will determine the genome DNA sequences of at least 1000 human individuals selected from all over the world, and draw the most detailed and most medically applicable DNA sequence so far. Genetic polymorphism map of the human genome.

Xing Conglian interrupted him: "In other words, the reason why Duan Wanshan's DNA sample appeared in the gene bank has nothing to do with any case, it's just because of the medical plan."

"It should be like this." Wang Chao nodded, still looking at the messages on his phone, "Teacher Duan seems to be the first group of medical scientists to respond to the plan. At that time, some people opposed the plan, which means that genetic information is the privacy of citizens. The government Doing large-scale scientific investigations is a violation of citizens' privacy, so Teacher Duan took the lead in participating in this project."

"Like what the old Duan would do." Xing Conglian said.

The police officer who had come to deliver the materials earlier and had been standing next to them seemed to have guessed something, and suddenly said, "Hey, Captain, do you know each other?"

Xing Conglian said calmly: "I know, we used to be... very good friends."

"Oh...it's your friend." The police officer couldn't help but draw the tone. After all, he had already identified Duan Wanshan as a criminal suspect before, and now he was thinking about how to change the topic, he said awkwardly, "Then ...Then do we need to invite your friend to assist in the investigation, in fact, there are quite a few possibilities that his blood sample will appear on this knife, for example, he accidentally stained it and gave it to someone..." He Began to try to explain some other reasons.

"No please." Xing Conglian said.

"For...why?"

"Because I know that he has been abroad and hasn't returned to China for many, many years." Xing Conglian said lightly, but did not mention the news of Duan Wanshan's death.

Lin Chen lowered his eyes.

The policeman next to them gasped: "This... this is impossible, there are bloodstains and fingerprints, the evidence is relatively sufficient."

"Is there any recent entry record for Duan Wanshan?" Xing Conglian asked.

Chao Chao had already found a computer in the forensic department, logged in to the Entry-Exit Management Center, and entered Duan Wanshan's name for query.

He folded the computer at an angle and said to everyone, "Come and see."

Xing Conglian and Lin Chen didn't have to move, but many people surrounded them.

“段万山最后一次入境时间在2007年8月10日……”有人念道，“并于同年9月1日出境，然后就没有任何入境记录了……”

"It's very strange." Someone touched his nose and said, "Is there something wrong with the immigration management? It shouldn't be..."

"This can only show that Duan Wanshan did not enter the country through formal channels, and may have entered the country illegally," someone said.

"But if Duan Wanshan has been abroad, why did he have a grudge with Stankang, and why did he kill him?" Finally, someone asked.