traces of all things

"Brother... Eldest brother is very generous." Wen Jiao's eyes wandered, and he answered irrelevant questions.

Several people gave a "hmm" and continued to apply eye pressure to Wen Jiao.

Wen Jiao was not a well-informed intellectual woman at first, but when she was glanced at by several criminal policemen—especially the black-faced Geng Zhizhong, she immediately trembled with fright, wiped her tears and said like a bean in a bamboo tube: "It's just not well-behaved." ...Many female colleagues in the company are a bit like him...you, especially Secretary Xu, Secretary Xu even showed off the diamond ring that my uncle bought for her..."

"Then why didn't you tell your uncle?"

"...I dare not, my husband also said not to meddle in other people's business..."

While a group of people were feeling sorry for Zhan Jiahe's Chen Shimei, Zhan Jiaxing, Zhan Jiahe's third brother, finally made arrangements for his mother to arrive.

"Jiaojiao, are you alright?"

What he said made Lu Zheng feel powerless to complain, what could happen if he was in the police station?

As soon as Wen Jiao saw Zhan Jiaxing coming, it rained in pear blossoms instantly.

Then Lu Zheng and the others suffered a critical blow from Zhan Jiaxing's unkind eyes.

Zhan Jiaxing and Zhan Jiahe are very similar in appearance, tall and well-proportioned.However, it may be due to a lot of entertainment in the business field, Zhan Jiahe is a little fatter, while Zhan Jiaxing looks a little stronger.

After appeasing his frightened wife, Zhan Jiaxing sat down with a tired face, took off his hat, and rubbed his sweaty heads.

You can't see it until you take off the hat. It turns out that the top of Zhan Jiaxing's head is quite sparse, and there are even some white hairs mixed in.

Wearing a hat or not doesn't look like a difference of ten years in age. Lu Zheng thinks about it, although it is a bit rustic, but after all, the young and beautiful Wen Jiao suddenly feels that it is not so incomprehensible for Zhan Jiaxing to wear a hat.

"I'm sorry, Comrade Police, our family, Jiaojiao, still has a child in her womb, so don't be frightened."

"Oh, how many months?" Geng Zhizhong asked with interest.

"Five months."

Lu Zheng and the others congratulated him, and then began to ask him how much he knew about the situation of his second brother's family.

Like the previous people, Zhan Jiaxing didn't know much about his brother's affairs, but compared to Wen Jiao, Lu Zheng and the others confirmed from him the extramarital relationship between Zhan Jiahe and Xu Lin.

"That Secretary Xu has been with my brother for a while, and even beat the child." Zhan Jiaxing said, "My brother has a house outside for her to live in. I heard from my brother that Secretary Xu had a fight and asked him to divorce, but I Brother refused, and then the matter was over."

Zhan Jiaxing's complexion was a little gloomy, and a deep furrow in the middle of his eyebrows made him look quite old.The drastic changes in his life in recent days seemed to weigh him down even more.

Seeing him sweating non-stop, Lu Zheng kindly poured him a glass of water.

"Thank you." Zhan Jiaxing raised the paper cup, the left hand holding the water cup trembled slightly, and some water was spilled out.

"Old problem, I'm sorry." He sighed: "Old wounds from when I was a soldier."

Lu Zheng and the others naturally didn't care, only Tang Shaoyuan pulled out a napkin to wipe off the water.

"What kind of work will you do after demobilization?" Geng Zhizhong chatted with Zhan Jiaxing as usual, trying to make him more relaxed.

"Me, drive a taxi and work the night shift." Zhan Jiaxing raised his hand and looked at it: "It doesn't affect it, but it can't be driven for too long."

Lu Zheng and the others nodded, they worked the night shift to rent out every day, and the day and night were reversed. It was no wonder that Zhan Jiaxing was aging so fast.

Regarding the brotherly relationship between himself and Zhan Jiahe, Zhan Jiaxing seems to be a little hard to say: "Our three brothers used to have a good relationship, but later the second brother gradually developed and alienated us. I went to beg him once, and then we came and went a little more."

"Do you know about your brother's handing out paw money?"

Zhan Jiaxing looked very shocked, he shook his head repeatedly and said that he had never heard of it, and it didn't look like a fake.

"Who has the keys to your brother's villa?"

"They are a family, but his house has been renovated a while ago, and many people should have taken it, foreman or something."

The few people who originally wanted to start with the key walked into a dead end.

"If you ask me, this matter probably has something to do with that secretary Xu." Wei Xiongfeng said with a know-it-all look on his face, "She must have threatened Zhan Jia with a divorce. Because of love and hatred, she was so nervous when she was questioned." , the height and shape match the traces at the scene, as long as we find a tall man who has a close relationship with her, we will probably be able to solve the case."

Team Captain Tian Ziyao obviously has doubts about this statement: "If hatred arises out of love, why should the whole family be put to death? Judging from the scene, the possibility of vendetta killing is relatively high. Let’s start with the matter and check the suspects who have financial conflicts with Zhan Jiahe.”

Lu Zheng didn't have the interrogation skills like Geng Zhizhong, so it was a bit overwhelming to face the different opinions from different parties.

"You guys are discussing first, I'll deal with the traces and evidence at the scene." Lu Zheng got up and pushed the stool back: "Nobita, come and give me a hand?"

Wei Xiongfeng had always been willing to be Lu Zheng's little tail, so he wanted to get up and follow up, but before he could stand up, he felt a burst of pressure on his shoulders, and he was pressed against the stool and couldn't move. "

"Let me help. He still has to investigate Xu Lin's bank account and social relationship." Tang Shaoyuan looked down at Wei Xiongfeng and smiled: "Is it, Daxiong?"

"…Yes."

Wei Xiongfeng's instinct like a small animal suddenly told him that it would be very dangerous if he didn't follow Tang Shaoyuan's words at this time.

"Alright." Lu Zheng didn't think too much, and waved his hands readily: "Anyway, you don't have much to do after the autopsy."

With a light touch on Wei Xiongfeng's shoulder, Tang Shaoyuan followed Lu Zheng out of the house with an obedient look on his face.

"Damn it." Wei Xiongfeng couldn't help complaining: "A flatterer!"

**

What Lu Zheng is going to deal with now is mainly two traces and physical evidence that he found at the crime scene but has not finished processing-the stains on the wall, and the pile of scattered Barbie dolls.

The stains on the wall are most likely bloodstains. Lu Zheng instructed Tang Shaoyuan to treat the sampled gauze with phenolphthalein and hydrogen peroxide, while opening several large evidence bags, and carefully put the twenty or so Barbies in gloves. The doll was pulled out, and the one with the messiest hair was picked and held in his hand for careful observation.

When he was concentrating on thinking, he always pouted slightly subconsciously. Coupled with the doll in his hand, Tang Shaoyuan immediately felt that his cuteness was beyond the limit.

"Pfft."

Lu Zheng looked up and saw that Tang Shaoyuan was pinching the gauze, with a smile that hadn't completely disappeared on his face.

"What are you laughing at?" Lu Zheng couldn't help laughing himself.

"It's nothing, I suddenly feel that senior brother, you look so cute."

In response, Lu Zheng rolled a ball of paper and hit Tang Shaoyuan on the head without any mistakes: "It doesn't matter whether it's big or small, please beat me. Hurry up and work!"

Tang Shaoyuan's hairstyle was a little messed up by the ball of paper, but he didn't look angry at all. He looked at Lu Zheng who was buried in the powder with his eyes tenderly, then took off his gloves and bent down to pick up the ball of paper and put it in in his pocket.

**

As time passed, Lu Zheng had already dealt with a dozen dolls in a row.

These Barbie dolls are all genuine, and the body parts are made of very soft and dense rubber material, which is a good fingerprint carrier.According to Lu Zheng's understanding, these dolls must have had direct contact with the murderer, because there was no trace of a fight at the scene, so maybe some things left by the murderer can be found on them.

It's a pity that Zhan Mingfei is a little princess type of girl. Many of the dolls she chooses are Disney princess commemorative models, the ones wearing long skirts. It is a hundred times more difficult to extract fingerprints from fabrics than rubber surfaces, but now Lu Zheng is no more A good way is to take off the markings one by one, and then spray the reagent and wait for the development.

"My current behavior really looks a little perverted."

Lu Zheng looked at the row of naked Barbie dolls on his right, and couldn't help but blush.

No fingerprints were found on the doll's clothes, but the sky paid off. On a Barbie doll in the shape of a long-haired princess, Lu Zheng found something interesting through the magnifying glass in front of him.

"What is this?" Lu Zheng carefully peeled off a few translucent pieces from the mesh of the skirt with tweezers, and placed them on the glass.

These thin pieces, the largest of which are only half the size of a grain of rice, are in the form of flakes, transparent and slightly powdery, and there are regular parallel textures on one side when observed under a microscope.

These textures gave Lu Zheng a special sense of familiarity.

Just as he was frowning and thinking, the centrifuge in the room started beeping.

It is also beneficial to ask Tang Shaoyuan to help, at least after confirming that the stain is human blood, he does not need to find someone, he can directly do the DNA.

Hearing the sound, Tang Shaoyuan lifted the lid of the centrifuge like a rice cooker, took out a few reagent tubes from inside, and quickly turned on the computer for comparison.

"Compared."

"Oh?" Lu Zheng raised his head from the microscope, with a happy expression on his face, kicked off his feet, and slid to Tang Shaoyuan's side with the office chair. It reached Tang Shaoyuan's neck.

Lu Zheng was very powerful, and the hot breath sprayed on Tang Shaoyuan's neck skin, which made him swallow stiffly, paused for a moment, and then said in his usual calm voice: "These stains are The human blood, after comparison in the database, proved to be the mixed DNA of Mr. Gong Ziqiang, Mrs. Chen Afen, and Zhan Jia and his wife."

"There is a high probability that the mixed DNA of so many people is left by the murderer." Lu Zheng thoughtfully picked up the photos of the scene on the table.

"Brother, what are these traces?"

Lu Zheng raised his head from his contemplation, and found that Tang Shaoyuan was looking at him again with those hesitant eyes.

"Here, look at the lines here. The edges are rough, many are parallel, and there are twisted cotton lines." Lu Zheng reached out and touched the close-up of the stain on the photo: "This is a typical glove mark—and this glove mark belongs to a The left hand with the work glove on."

The author has something to say:

Remarks:

Regarding the blood identification of stains, you can use gauze to collect samples, and then add phenolphthalein and hydrogen peroxide to the samples. If the stain contains blood, the gauze will change color.

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In addition, I would like to add here that in order to simplify the characters in this article, some of the detailed divisions of labor have been merged into similar items. DNA inspectors and other professionals worked together, but after all, this is a criminal investigation novel, not a documentary. If it is all realistic, there are too many characters, and the novel is not easy to read, so the author made some appropriate changes on the basis of reality. , I hope everyone can understand~