I'm not a super cop

Chapter 433 Toilet
Cheng Yuguo's family lives in a small two-story building with a small area. The first floor is a living room, kitchen, and bathroom, and the second floor is two bedrooms plus a balcony and a bathroom.

Maybe it was because Cheng Yuguo himself was lazy, and because his family's life was unsatisfactory, Xiao Ran looked upstairs and downstairs, and found that Cheng Yuguo's house was not very clean.

Some places are muddling along, as long as no one can see it, you can not clean it if you can.

The same is true in the bathroom on the first floor.

The corners and corners of the bathroom floor are full of dark brown stains, the washstand is also very messy, the faucet and the mirror are covered with dry water stains and traces of toothpaste, and the white toilet seat has also been cleaned. turned tan.

Obviously, Cheng Yuguo's family hasn't cleaned this bathroom for a long time.

Compared with the photos taken by the on-site investigators at the time, it can be seen that at the time of the incident, there were hairs of various lengths scattered in the bathroom, but those hairs were taken away for inspection.

However, the final test results showed that those hairs belonged to Cheng Yuguo's family, and no other people's DNA was detected.

What caught Xiao Ran's attention was not the environment in the bathroom, but the covered toilet.

This toilet doesn't attract much attention, and it's very old and messy, especially inconspicuous, but looking at the area at the front of the toilet lid that is relatively clean because it is often opened and closed, Xiao Ran has a feeling in his heart. idea.

Calling Zhang Lei and Yu Mengqing over, the three of them nestled in the small bathroom, and the atmosphere was unavoidably awkward.

"What's the matter, did you find anything?" Zhang Lei kept scanning with an ultraviolet flashlight as soon as he came in, but he didn't see anything.

Facing the on-site investigation report at the time of the crime, Xiao Ran asked Yu Mengqing: "On this toilet, no fingerprints were extracted at that time, right?"

"what?"

Yu Mengqing was stunned, very puzzled why Xiao Ran would pay attention to such an ordinary toilet. Could it be that the way of thinking of criminal investigation experts is so weird?
However, as a person who often organizes and gathers the progress of all parties, Yu Mengqing basically has an impression of the contents of the investigation report.

She thought for a while, then shook her head and said, "There is nothing on the toilet. But the handle of the faucet and the toiletries are found here, but those were later proved to be traces of the life of Cheng Yuguo's family."

Xiao Ran nodded, put on his gloves and asked Zhang Lei for tape, and tore off a section to stick it on the front of the toilet seat.

Zhang Lei also squatted down and leaned over, watching Xiao Ran tear off the tape, but he didn't find any traces of fingerprints, so he couldn't help but ask, "Xiao Ran, what are you doing?"

Xiao Ran raised the corner of his mouth, and said to Zhang Lei: "Assuming this is your toilet, you can now simulate the whole process of going to the toilet."

"Simulate going to the toilet? — Brother, it's not like you don't know how to go to the toilet. Doesn't everyone have those steps, and you still use me to simulate?"

Zhang Lei said, lifted the toilet lid, sat up for a while, wanted to press the water tank button, but was stopped by Xiao Ran, and then closed the toilet lid casually: "Isn't it all like this?"

Xiao Ran didn't say anything, but just tore off two more tapes, one was pasted on the water tank button which was relatively clean due to frequent use, and the other was pasted on the position where Zhang Lei put his finger on the toilet lid to put it down.

Although Xiao Ran didn't say it clearly, compared to Yu Mengqing, who was still in a state of confusion, Zhang Lei quickly came to his senses.

He took off two tapes, and there was nothing on the tape on the water tank button, but on the other tape, there were two incomplete fingerprints of Zhang Lei.

Of course, if Zhang Lei had really pressed the water tank button just now, there would definitely be his fingerprints on the other tape.

Looking at the two tapes in their hands, Zhang Lei and Xiao Ran looked at each other, "Is that so?"

Xiao Ran nodded.

"What is it? Hey, what the hell is it? I'm almost confused by you!" Yu Mengqing looked left and right, and really couldn't figure out what kind of medicine Xiao Ran and Zhang Lei were selling in their gourds.

Zhang Lei waved the tape in front of Yu Mengqing's eyes, and asked, "What's on the tape?"

"Your fingerprints."

"Then why were there no fingerprints left on the toilet at the scene?"

Yu Mengqing was slightly taken aback, and replied: "How do I know... maybe they wiped it off after going to the toilet."

"After you go to the toilet, will you wipe the toilet lid and button specially?"

Zhang Lei looked at Yu Mengqing in amazement, and then pointed to those dirty marks: "And look at this bathroom, and the toilet is so dirty, do you think Cheng Yuguo's family will put the toilet on the toilet after going to the toilet?" Wipe off fingerprints, touch marks and the like?"

"..."

After Yu Mengqing was silent for a while, she finally came to her senses and exclaimed, "So you mean that the murderer used this toilet?!"

"It should be."

Xiao Ran didn't answer for sure. Holding a bright flashlight, he squatted next to the toilet and carefully observed the situation inside the toilet.

I have to say that this toilet is quite dirty due to not being cleaned for a long time, not only the toilet seat has turned bright yellow, but even the inside of the toilet is full of yellow and brown spots.

Seeing Xiao Ran laying on the toilet with a flashlight on, his whole face almost reaching the water seal, Yu Mengqing felt disgusted in her heart, but she also felt a strong sense of peacekeeping.

Sure enough, it is not so easy to become a criminal investigation expert. You have to do everything, and it is impossible for you to see the picture in the TV series that you can understand by walking around.

Although the looks of the person in front of him completely surpassed those idol stars, isn't he still holding a plastic stick and stirring the toilet with all kinds of excrement left?
"There seems to be some food residue left in the water seal. Let's remove the toilet, Leizi, and be careful not to tip the water inside."

Xiao Ran observed for a while, asked Yu Mengqing to turn on the flashlight, and then joined forces with Zhang Lei to dismantle the toilet.

Yu Mengqing bent down, looked at the busy two people, and couldn't help asking: "Why is it food residue? The excrement was soaked in water and was not washed clean. It probably looks like food residue, right?"

Xiao Ran and Zhang Lei paused at the same time before saying, "I hope not."

After some tossing, the remaining water seal in the toilet and the detritus in it were put into a ziplock bag.

Holding the ziplock bag in one hand, Zhang Lei observed the substances in the water with the light in the other hand, and analyzed uncertainly: "It should not be excrement, it seems to be food residue from vomiting."

"Couldn't it be when the murderer committed the crime... did you vomit disgustingly?"

Yu Mengqing was surprised, "How is this possible? Such a cruel suspect, like in foreign movies, regards killing as an art, how could he vomit?"

"It doesn't matter whether he vomits or not, you'll know if you send it to the technology center for testing." Zhang Lei said.

Yu Mengqing shook her head, and asked again: "But if this is really vomit residue, it has been soaked in this water for almost half a month, can DNA still be extracted?"

"Give it a try." Xiao Ran was also not sure.

But if the murderer was really disgusted by his actions during the crime, what was the psychological environment of the murderer at that time?

(End of this chapter)