traces of all things

In the middle of the night, the lights in the laboratory of the Municipal Bureau's Physical Evidence Center were still on. From the outside of the building, there was a faint light in the completely dark building.

The hour hand had already pointed to four o'clock in the morning, and Tang Shaoyuan took a big sip of black coffee and tried to do the STR typing test on the samples in his hand.

"The difference between identical twins is not only reflected at the epigenetic level, but may also be reflected at the genomic level. These are the methods we may take when identifying identical twins..."

The words of his tutor in college echoed in Tang Shaoyuan's mind and lingered for a long time.

Yes, there must be a way!

No two people are exactly the same in the world, everyone is unique!

DNA methylation, acetylation, copy number variation, mitochondria... everything was tested, and finally at dawn, his tired eyes lit up, and his hands trembling uncontrollably while holding the test tube.

With...!

The test material in his hand is Lu Zheng's blood sample.

According to the experimental results, Lu Zheng's blood sample showed a rare phenomenon of three alleles at the autosomal vWA locus!

However, this was not the case in the splattered blood sample taken at the scene.

Tang Shaoyuan's heart beat instantly.

"Calm down." He said to himself: "It's not enough for now, we have to make this matter into an iron case."

So he quickly restarted the experiment with another sample.

The exact same result appeared, and the DNA sample extracted from Lu Zheng's oral epidermal cells also showed the phenomenon of tri-allelic gene at this locus.

This can no longer be explained by sample contamination.

The facts were before him, that is, the blood sample left on Qin Han's arm was not Lu Zheng's, but someone who had the same DNA type as him, that is, his twin brother, Yu Zhi's!

**

It was dawn.

One after another, the city bureau began to have the sound of going to work.

Tang Shaoyuan completely ignored his tired body, and sorted out the experimental reports in front of him as quickly as possible.

At this moment, the door of the laboratory was pushed open, and Wei Xiongfeng and Xue Yiwei rushed in.

"Forensic Tang! How I thought it was wrong last night." Xue Yiwei looked excited and said, "I went to the physical evidence room early this morning, as expected!"

Speaking of this, he took a deep breath, seeing that Tang Shaoyuan had finished what he was doing, he continued to add: "Yesterday I kept thinking about why there was that last call, if Qin Han wanted to leave a death message If so, even if he wrote on the ground stained with blood, it would be more obvious? After all, there is a world of two minutes from the injury to his death, which is enough. And if you call the murderer, isn’t it afraid that the murderer will find out that he is not dead yet, and come back to make up for it? ?”

Wei Xiongfeng cooperated unprecedentedly on the sidelines, nodding his head like garlic, with a serious face.

"Today, I had an idea, and asked Wei Xiongfeng to help me check Qin Han's phone settings! Sure enough, he set up a quick dial for Team Leader Lu's phone number, which is '1'—so, a more reasonable explanation should be Qin Han found that he was not in a good condition, so he tried to dial 120 or 110 for help, but just pressed a button, he died, and his finger stayed on the button '1', which caused the effect of long pressing, and dialed the number of the group leader. Phone! In this way, the blood stains in the upper left corner of the phone screen can also be explained, because the dead man's hand stopped there!"

Wei Xiongfeng also added at this time: "At the same time, according to the record of the team leader during the interrogation, the first call at ten o'clock in the evening was because he had something to confirm with Qin Han, but after dialing, he heard There is no sound from the other side, only the loud music. This makes perfect sense, Qin Han put his mobile phone in his pocket or something, and accidentally connected it while he was in the bar, but he himself didn’t Knowing that the team leader called him—in this way, the two phone calls are all clear! Now we are only missing some crucial evidence, proving that the team leader’s appearance on Hulu Street has nothing to do with Qin Han—”

When Tang Shaoyuan heard this, a smile gradually appeared on his face.

"Already have." He confidently raised the corner of his mouth and said, "I can directly prove that the person who appeared on Calabash Street is not a senior at all."

**

Lu Zheng heard the wake-up call before seven o'clock in the morning.

"Get up, wash up, shit and pee quickly!" the captain said impatiently to the fellow cellmates.

After a group of people finished washing, Lu Zheng welcomed his first meal in the detention center.

The horrible conjecture last night made him a little uneasy today, and he was still a little dazed when he sat in front of the table.

I haven't been to the hospital recently, and except for the kitchen accident, I haven't had any bleeding. Even when I was identifying Cuiping's skeleton in Jiang Province, I didn't participate in the test because Cuiping's bones were too old to extract DNA.According to his speculation about the expressions and expressions of Huang Ying and Xian Hongru, his DNA should have appeared at the scene where Qin Han was killed. In this way, he guessed that what Qin Han saw might be his younger brother Ah Zhi, not the suspect boy who was dismembered and fled.

Having been classmates for several years, he knows Qin Han's personality very well. Qin Han looks easy-going, but in fact he likes to break the casserole and ask the bottom line. Could it be that he met Ah Zhi by chance and found that he looks very similar to himself? Going up to ask, there was some kind of dispute between words, which eventually led to a fight between the two?

In this case, Ah Zhi must be in the provincial capital. Does he know that his unintentional actions caused Qin Han's death?

Even if it was an accident, negligent death is a fixed-term imprisonment of not less than three years but not more than seven years——

Thinking of this, Lu Zheng couldn't help feeling anxious.

The most urgent task now is to let Ah Zhi know the consequences of his actions, and then surrender himself, otherwise, he will not even be able to win a lenient punishment...

"Lu Zheng, which one?" The staff called his name, he took a deep breath to calm down his anxiety, and raised his hand in response: "Yes."

This is also a new learning. When the name is called in the detention center, you can't say "come", you have to say "yes".

The staff looked at the home clothes he had already put on, and nodded: "Your family paid you extra. Sit here."

In an instant, everyone in the same cell cast envious, jealous eyes on Lu Zheng.

The regular food in the detention center is naturally not a delicacy in the world. Breakfast is just a big bowl of gruel with dried radish.Someone on Lu Zheng's side added to the bill, which means that the food can be improved. After sitting down, Lu Zheng found that there were steamed buns, eggs, porridge, rice and mustard on the side of the table.

The same is not very good, but looking at the porridge on the other side and the dried radishes that are counted and distributed, this simple breakfast is set off as luxurious as a state banquet.

Looking at this handwriting, it must have been considered by Tang Shaoyuan for him.

It may not be such a difficult thing to increase the account, the key is that it is rare for the front foot to arrange for the back foot as soon as the front foot comes in. The man who struck up a conversation with Lu Zheng last night saw that Lu Zheng was still in the detention center. Thoughtful and persistent, he couldn't help snorting, and turned his head unhappily.

After eating, Lu Zheng was sent outside the cell before he could return to the cell to receive the jealous ray from his cellmates.

"The Municipal Bureau is interrogating you this morning." The staff member said.

Lu Zheng nodded clearly. His case is pending at this time, and frequent interrogations are normal.

It's just... what should I do?

He had already guessed that this incident was related to his younger brother Ah Zhi, but... after finally finding his younger brother, did he have to send him to the detention center with his own hands?

But Qin Han is his close friend, if Qin Han's death is not clear because of his concealment, he has no way to explain to the old Qin couple who lost their children in old age!

Just when his mind was full of messy thoughts, he had already been brought into the familiar interrogation room. Two metal knocking sounds sounded, and a new round of interrogation began.

Captain Huang Ying looked the same as yesterday, nothing changed, but she didn't give Lu Zheng more room to think, and the first sentence she came up was straight to the heart.

"Lu Zheng, please answer the following questions truthfully." She said solemnly and simply: "Excuse me, do you have a twin brother, and are you an identical twin?"

Lu Zheng's face turned pale, his lips trembled for a moment, he was silent for a while, and finally spoke in a hoarse voice.

"Have."

**

Entered last night and left today, when Lu Zheng left the transitional cell, he enjoyed the treatment of being surrounded by everyone like giant pandas.

It is estimated that some people in the house are going to brag with others again. A little brother came to this house before. If he can bear it, he will stay for one night. He has clothes and extra meals. It is like staying in a hotel. He went out the next day !

Lu Zheng smiled wryly and shook his head. If possible, he didn't want to be such a legend at all.

Although the suspicion of murder on him has been cleared, procedures still need to be followed to return to his original job. In addition, the provincial department also sympathized with him for having endured these unwarranted disasters, and asked him to rest at home for two days before returning to work.

He arrived at the police station near the City Bureau in a police car. When Lu Zheng got out of the car, he saw a figure standing on the steps outside the police station. He was tall and leggy, with disheveled hair, and he was pacing anxiously.

Hearing the sound of the car engine, the man turned his head eagerly, his slender eyes looked red.

It was Tang Shaoyuan.

Seeing Lu Zheng open the car door and come out, Tang Shaoyuan rushed over in three steps at the same time, held Lu Zheng's shoulder and looked carefully for a while, his eye circles became redder, and he opened his mouth and said, "...I lost weight."

After saying that, she hugged him into her arms and held him tightly.

Lu Zheng: ...you can lose weight overnight, are you serious?

Originally, he still had a bit of soreness about the reunion after a long absence, but when Tang Shaoyuan sighed so sincerely, he couldn't feel sad for an instant. He hugged him back and forth with a smile, and stretched out his hand to pat Tang Shaoyuan's back. twice.

"Okay, okay, I'm back now?"

Tang Shaoyuan whimpered and rubbed against his neck twice, but refused to raise his head.

The two of them were sticking together as if no one was around, and the little policeman next to him who was in charge of sending them back laughed when he saw this, "Oh, the relationship is really good! What a good buddy!"

It's really shocking and weeping ghosts and gods.

Lu Zheng struggled twice, and wanted to turn his head and shake hands with the two little policemen who took him back to the police station to say thanks, but Tang Shaoyuan hugged him too tightly, and refused to let go no matter what, so he had to signal with his eyes.

The straight male policeman laughed again and waved his hands: "Go on, go on."

At the gate of the police station, there was a scene of "brotherly love". Lu Zheng smiled and pinched the back of Tang Shaoyuan's neck: "Okay? Have you hugged enough?"

Tang Shaoyuan rubbed his head twice before raising his head. He was too excited to meet him just now, and now Lu Zheng could see clearly that Tang Shaoyuan not only messed up his hair for the first time, his white eyes were bloodshot, and his face was still full of bloodshot eyes. The two huge dark circles under the eyes made it look like he hadn't slept all night and was very haggard.

From Huang Ying and Xian Hongru, Lu Zheng already knew how the key evidence of his innocence came from. Seeing that Tang Shaoyuan had worked so hard to clear himself of his grievances, and made him so embarrassed, he felt sad and moved.

He stretched out his hand and gently touched the shadow under Tang Shaoyuan's eyes: "Fool, why do you trust me so much?"

With so much unfavorable evidence piled up in front of them, even Boss Geng and Wei Xiongfeng, who usually work together and know each other well, are unavoidably shaken. Tang Shaoyuan was the only one who firmly believed in his complete innocence.

He never thought about what if it was really me?Lu Zheng touched Tang Shaoyuan's face, feeling a little distressed.

"No. No matter what others say or think—" Tang Shaoyuan looked directly into his eyes, with scorching light in them:

"—My justice is you."

The seven words were like a heavy hammer, hitting Lu Zheng's heart one by one. He held Tang Shaoyuan's face, his eyes flickering.

The distance between the two is getting closer.

"Hey? You haven't left yet? Go back and chat slowly, why are you blowing the wind here?"

The two of them woke up from that magical state in an instant. The straight male policeman should have gotten off work, and was standing on the steps with his computer bag, looking at them curiously.

Lu Zheng's ears turned red in embarrassment for a moment.

Let me go... Just now, I almost staged a restricted scene with Shao Yuan at the gate of the police station... Where did he come from...

The straight man, the little policeman, gave his sincere advice and walked away. The two people on the steps looked at each other awkwardly for a while. Looking at each other's flushed cheeks, Lu Zheng finally couldn't help it, and laughed out loud. .

"Let's... let's talk when we go home?" He pursed his lips, and the dimple appeared on his cheek again.

I don't know if it was his illusion, but Lu Zheng felt that a light suddenly flashed on Tang Shaoyuan's glasses.

"Okay, let's... go home."