The current survey office.
"Lu Chuan, are you sure this fingerprint must be that of Zhao Zhijun?"
The murderer decomposed Yang Qianqian's body. It is certain that he did it on the plastic sheet found in the kitchen.
There were not only blood stains on it, but also some unprocessed minced meat.
The discovery of Zhao Zhijun’s fingerprints on the plastic sheet is important evidence to identify the other party as the murderer.
Therefore, when he found that the main words did not correspond, the timeline did not match the entire case process, and there were problems, Zhang Hui immediately went to the field investigation office for verification.
“There is definitely no problem with the fingerprint identification analysis.”
The black plastic sheet where Yang Qianqian’s body was decomposed is an important physical evidence, and the fingerprints found on it are very clear.
When Lu Chuan conducted identification and comparison, there was no matching target in the fingerprint information database. At that time, the current investigation team had already listed the owner of the fingerprint as an important suspect.
After Zhao Zhigang was arrested, the other party’s new fingerprint information was collected immediately, and it only took a few minutes for the comparison to be successful.
Lu Chuan was 100% sure of this.
Zhang Hui frowned even more tightly now.
"This...isn't right."
"What's wrong, tell me?"
Then Zhang Hui explained his doubts to Lu Chuan.
"If Zhao Zhijun is really the murderer, after the other party killed the person on Wednesday, why did he insist that he saw Yang Qianqian on Thursday when I interrogated him?"
"The other party remembered the time wrongly. ?"
Zhang Hui shook his head: "This is unlikely."
"The other is the time when Zhao Zhijun destroyed the corpse."
"According to Zhang Meili. Zhao Zhijun went to the pedicure shop on Thursday night and was with Zhang Meili from around 3pm on Friday to Saturday morning.”
"But judging from the volume of Yang Qianqian's water meter, there is water volume on Thursday night and Friday night."
"In other words, the murderer was actually dealing with Yang Qianqian's water on Thursday night and Friday night. Corpse."
"If Zhao Zhijun and Zhang Meili didn't lie, does that mean... more than one person committed the crime?"
Lu Chuan frowned after hearing Zhang Hui's doubts.
After Zhao Zhijun was arrested and successfully matched his fingerprints, Lu Chuan once thought that the case was completely solved.
But now it seems that the case is not that simple.
“Because the housekeeper cleaned the room before reporting the crime, many clues were destroyed.”
This is the biggest difficulty encountered in this on-site investigation, because the housekeeper has already mopped the floor. , the footprints left by the murderer no longer exist.
“But there is definitely no problem with the fingerprint comparison.”
“Zhao Zhijun said that he had helped buy the black plastic sheet before, so his fingerprints were on it.”
This point...
“Of course this possibility exists.”
“And the contradiction in the timeline you mentioned actually has some doubts in our current investigation. , that is, since Zhao Zhijun left fingerprints on the plastic sheet, why were there no fingerprints on the murder weapon? "
He knew to wear gloves when killing people, but did not wear them when handling the body, so he left fingerprints?
“Can you determine the time the fingerprint was left?”
Lu Chuan waved his hand: "There is no such technology."
Lu Chuan was playing with criminal investigation technology, not criminal investigation metaphysics.
While the two were chatting, the office door was opened and it was Lao Chen from the second operation team.
"I got the surveillance video of the Pig's Trotters shop. Zhao Zhijun didn't lie."
Huh?
Zhang Hui was stunned, didn't he lie?
I really didn’t lie, but...how is this possible?
"Lu Chuan, just watch it on your computer." Lu Chuan nodded. He knew that this was brought back by Lao Chen. He got it from the pig's trotters shop on the 8th floor that Zhao Zhijun mentioned. surveillance video.
If the existence of Yang Qianqian is really discovered in the video, then all the previous work may have been wasted.
Because the time of death of the deceased... was wrongly judged.
While the video is playing, the picture is not particularly clear, but Zhao Zhijun’s profile can still be clearly seen in the surveillance corner.
The person opposite him could only see his back and not his face. However, a moment later, when the person opposite Zhao Zhijun stood up and went to the bathroom, his face was just facing the camera.
Yang Qianqian!
It’s really Yang Qianqian!
Lu Chuan frowned, how could that be possible?
This time, the forensic doctor did not go there at the beginning to determine the time of death of the deceased. It was made by the investigation team.
Specifically, it is the time of death judgment made by Lu Chuan.
There are many bases for Lu Chuan to judge the time of death.
There is a very important relationship between the decay of human body fat and organs after separation and time.
And the little finger found in the sewer.
According to the degree of corruption of the fingers, corresponding judgments can also be made.
The last thing is the blood stains found in the kitchen.
Whether it is the black plastic cloth ax or the color of the blood on the chopping board, the time of death of the deceased can be determined.
Last Wednesday, that was for sure.
But such a certain time of death seemed a bit ridiculous in front of the surveillance video that Lao Chen got back.
How could he be dead when he was standing there alive?
Did you do something wrong?
No!
Absolutely impossible!
Lu Chuan was quite confident in his judgment of the time of death.
In other words, even if there is an error, it should not be as long as a day.
Lu Chuan paused the video and pulled out the photos taken at the scene.
Axe, chopping board, plastic cloth...
After the blood appears bright red when it leaves the human body, it will turn brown in a short period of time. The longer the time, the darker the color.
This is the result of the oxidation of iron ions in the blood, and as time goes by, the degree of oxidation becomes higher and higher.
The color of blood will also change from bright red to dark red, deep red, brown, earthy brown, and black.
The color of blood is very different at different time stages.
Most people can’t see it, but as an investigating detective, how could Lu Chuan make a mistake in this regard?
Looking at the color of the blood on the murder weapon now, Lu Chuan could tell at a glance that the approximate time was last Wednesday, there was no mistake!
However, Yang Qianqian's appearance in the surveillance camera on Thursday could not be fake.
What's going on?
"Lu Chuan, do you want to re-evaluate the time of death?"
The time of death was determined by technology, but the video clearly showed it.
Comparing the two, the video is definitely real.
But Lu Chuan shook his head.
Zhang Hui said it very tactfully. The re-identification actually means that there is something wrong with his identification of the time of death compared with the video.
However, just after looking at the photo again, Lu Chuan knew that there was no problem in determining the time of death.
Otherwise, there is a problem with the system.
Will there be any problems with the system?
"Brother Hui, there is absolutely no problem with the time of death. I can guarantee this."
Then Lu Chuan pointed to the video the three of them had just watched.
"And if the person who appears in this video is indeed Yang Qianqian, it means that the person who died in Yang Qianqian's house on Wednesday...was not Yang Qianqian!" (End of Chapter)