In the foot massage shop diagonally opposite Xu Qianxiang's residential community, Xiao Hua did not find the foot washing girl who had been handled by her at the grassroots police station before. However, after several twists and turns, I still found two people in other foot massage shops, and one of the two foot washing girls happened to know a girl from the foot massage shop diagonally opposite Xu Qianxiang's residential community. So, by doing the work of the two, they finally agreed to cooperate with the police - as long as Xu Qianxiang entered the foot washing shop again for a pedicure, they would try to see if there were any scars on his body similar to those cut by his fingernails.

Next, the serious crime team can only wait while doing other investigation work.

For the torso of the body of the victim female teacher Wang Li, although a large amount of police force was mobilized, two days have passed, and there is still no gain.

However, to the excitement of the serious crime team, through the efforts of the forensic doctor, two biological samples that did not belong to her were finally extracted from the only whitish hand of the victim Wang Li who was soaked in the river.

When the forensic examiner successfully extracted two pieces of DNA information from it and entered it into the database for comparison, one of them quickly became available. After comparison, it was found that it was Suo Jianxing, the owner of Yayi Pawnshop. It's just that another piece of DNA information is not compared.

"Suo Jianxing's DNA information was also entered into the information database just after he committed suicide, and the owner who wanted to come to another copy also had no criminal record."

"Team Ling, I have a way."

"What's the solution?"

Everyone knew that Jia Wei was referring to the fact that there was a way to get Xu Qianxiang's biological samples, but no one said it.

"I think everyone should have noticed that he has a habit if they are careful."

"You mean he used to turn the pages with his saliva-dipped fingers when he was reading books and flipping through documents?"

"Hehe, I know that Uncle Xun's old eyes can see everything." After Jia Wei and Xun Jianguo made a joke, they immediately stood up and said, "I'll go to the office to have a look." ”

Ten minutes later, Jia Wei returned to the office of the serious crime team with a few books in his arms and said: "These are all books that are obviously often turned over in the bookcase under the east wall of the office. ”

Because everyone knows that Xu Qianxiang, who was the director of the office before, has been sitting in front of the bookshelf under the east wall of the office. And he does have the habit of taking books from the bookcase to read when he is not working.

"Quick, get to the medical examiner."

"Yes."

After Jia Wei left, Qi Zhibin asked with a little puzzlement: "Team Ling, if our initial analysis is not biased, and the second DNA information in the victim's nail crack can really be compared, it is not difficult to explain that the first one is a phenomenon from Suo Jianxing - it should be an illusion deliberately created by the suspect."

It's just that the suspect killed Wang Li first and cut off her hands and took them with him. After creating the illusion of Suo Jianxing's suicide again, he deliberately used Wang Li's severed hand to draw scars on Suo Jianxing's body, and finally successfully left Suo Jianxing's biological samples in Wang Li's nails? ”

"It's cruel, but there doesn't seem to be any other plausible explanation."

"But the five fingers of a dead man's hand are not so obedient, so it is not so easy to leave no flawless nail scratches on Suo Jianxing's body, right?"

Qi Zhibin's question suddenly made the serious crime team fall into a short silence.

Indeed, judging from the nail scratches remaining on Suo Jianxing's body, it does not look like it was deliberately made with a dead man's hands. It's more like when men and women are intimate, and the woman forgets to stay naturally.

"Could there be some kind of coincidence?"

"Are you saying that Suo Jianxing may have had sex with a woman, or even his wife, before committing suicide? That's why there are natural nail scratches on the body. And the suspect coincidentally borrowed this ready-made condition? ”

"What Xiao Hua said is not unreasonable." Xun Jianguo took it and explained: "This possibility does exist. Imagine, when the suspect was intimately intimate with Wang Li or inadvertently cut his body with Wang Li's nails during the fight, and Wang Li's biological samples were left in the cracks of the nails.

In order not to be suspected by the police, and even find himself, the suspect chose to cut off Wang Li's hands.

As for the suspect who wanted to take Wang Li's severed hands with him and take them to the scene where Suo Jianxing committed suicide, there are two possibilities.

One is that the suspect had not yet thought about what to do with Wang Li's severed hands that contained his own biological samples.

The second is that the suspect had already calculated it in advance, or unintentionally, after leaving biological samples in Wang Li's nail cracks - because the suspect knew very well that he could not completely clean up the biological samples left in Wang Li's nail cracks, so he would find a way to completely destroy Wang Li's hands. However, even if Wang Li's hands were destroyed, they still couldn't hide the scars left by Wang Li's fingernails. Therefore, the suspect decided to leave the same scar on Suo Jianxing's body in order to confuse the police. ”

Xun Jianguo's analysis and reasoning cannot be said to be unreasonable, but when I think about it myself, there is still a problem that cannot be explained.

So Qi Zhibin immediately asked: "No matter what the situation is, wouldn't it be safer for the suspect to simply destroy Wang Li's hands completely, why did he choose to throw it into the Qingxu River in the end?" ”

was asked by Qi Zhibin like this, Xun Jianguo suddenly couldn't find a suitable reason to explain this problem.

When Xiao Hua heard this, he stood up directly and said to Ling Zhan: "Team Ling, I'll go to Suo Jianxing's wife first to find out if the two of them had a married life before Suo Jianxing's incident. ”

"Okay, there you go."

After Xiao Hua left, the three of them were silent for a while, and Ling Zhan opened his mouth to explain Qi Zhibin's question: "Could there be such a possibility, the suspect did not want to completely destroy the victim Wang Li's hands, but because of other very special reasons, such as being hit by someone, or being too late in objective time, which finally caused him to change his plan in a hurry?" ”

"Besides, is it possible?" Xun Jianguo immediately said: "Did the suspect deliberately leave the severed hands of the victim Wang Li?" ”

"Why?"

"The suspect must have carefully cleaned Wang Li's nails after killing her. It was precisely because the suspect knew in his heart that it was impossible to clean it up completely, so he came up with the idea of using Suo Jianxing's biological samples to cover up the trace samples he left? ”

"Makes sense." Ling Zhan analyzed: "In this way, it should be the first possibility that Uncle Xun just analyzed is a little more likely. In other words, after the suspect found that the victim Wang Li had left his biological samples in the cracks, but knew that he could not completely clean it up, he did not think about what to do with the severed Wang Li's hands for a while.

It's just that when he created the illusion of Suo Jianxing's suicide according to the plan, he accidentally found that Suo Jianxing also had scars similar to nail cuts on his body, so he suddenly had an idea.

Not only did he want to use Suo Jianxing's biological samples to cover his trace amount of biological samples, but he also changed his original plan to destroy Wang Li's hands, and kept them to confuse the police. ”

"That means that one of the suspects' purpose in throwing the victim Wang Li's hands into the Qingxu River is also likely to further reduce the amount of trace biological samples he left in Wang Li's nails?"