"You go to Ma Zhiyuan's side to take a look, have the results of the examination of various physical evidence come out, and how are the autopsies of the three corpses."

Putting down the report, I answered the call and went to the laboratory department to find Ma Zhiyuan, when he arrived, he was sorting out the documents, and when he saw me coming, he asked, "Xiao Xu?" Did the vice-captain ask you to come? ”

"Well, he asked me to ask you if the autopsy reports for the three bodies came out."

Ma Zhiyuan nodded and didn't speak, and after a while, he pointed to the three stacks of papers on the table and said: "It's all out, I just checked the body of Zhang Lei, who hanged himself this morning, these are three results, I used a paper clip to distinguish them, you go and hand over the things to the deputy captain." ”

"Okay, I'm sorry to trouble Brother Pony."

I ran back to the conference room with three stacks of reports and handed them to Sun Jianguo, who was reading the documents.

Looking at the information registered on the front page of the three reports on the table, he was obviously a little surprised: "All of them came out?" The ponies are very efficient, I thought we would have to wait a while. ”

Zhang Bin interjected on the side: "I heard that the newcomer who recently went to the laboratory department has some ability, otherwise it shouldn't be so fast." ”

Sun Jianguo squinted at him: "Get out of the way, why are you everywhere?" I'll tell you little rabbit, we're not done with this matter, and I'll find a way to get you when the case is over. ”

"Don't, Vice-Captain......"

Sun Jianguo had already opened the report at this time and looked at it again, and didn't pay attention to his ghost crying wolf howl, Zhang Bin didn't roar anymore when he saw this, he could only hang his head and do his own thing.

After a while, Sun Jianguo threw over the three autopsy reports and said, "You two take a good look and see if you can find anything wrong with it, Binzi, this is your chance to make up for it." If you can't find out, don't take this year's vacation. ”

"Vice Captain, I promise you that you will definitely be able to find it, no matter how cunning the murderer is, he will not be able to escape my eyes."

"Don't brag to me, watch it first!"

I first took Du Xianchao's time report and read it, most of the content on it had already been said by Sun Jianguo last night, and the rest was about the identification of some fingerprints and evidence in his room.

Only two kinds of fingerprints were found in Du Xianchao's home, one of which was Du Xianchao's own fingerprints, and the other was a fingerprint collected from the ashtray in the deceased's home, the fingerprints on it did not belong to Zhang Lei, but from a stranger, and who belonged to it had to wait for a large area to collect fingerprints to know, and the gray powder near the garbage heap and the gray powder under the blood were identified, both of them belong to the same substance, and their components belong to the semi-finished products of chemical fertilizers, and through DNA identification of the two cigarette butt filters found at the bottom of the bed, Finally, compared with Zhang Lei's DNA, it was found that the two were the same.

However, the fingerprints extracted on the filter did not match Zhang Lei, but were the same as the fingerprints on the ashtray. This is very likely to be the same as the previous conjecture, the cigarette butts found at the scene of the murder were not left by Zhang Lei smoking, but people with ulterior motives hid the cigarette butts that Zhang Lei had smoked and threw them at the scene of the crime after committing the crime. Thus falsifying evidence.

However, what is more strange is that the saliva and fingerprints on the dishes and chopsticks found in Du Xianchao's house belonged to Zhang Lei after identification.

Putting aside this doubt for the time being, I continued to read it, and the following content also mentioned that the fingerprints checked on the incense burner also belonged to Zhang Lei, and the others were written about some test results of the corpse, such as the time of death and the cause of death, and how many knives were cut, these can only show the murderer's ferocity or hatred for Du Xianchao, and nothing else can be said.

I put this report down, picked up Guo Da's autopsy report, and wrote about Guo Da's cause of death in the beginning of the section, and the cause of his death was not because he fell from a high altitude, causing massive intracranial hemorrhage and died, but was scared to death!

The autopsy report reads: The heart of the deceased Guo Da contracted and expanded rapidly before death, and after a short period of repeated process, the valve should not be able to withstand the violent contraction movement and rupture, eventually leading to death. At the same time, the pupils of the deceased were pinhole-shaped, and they were obviously violently stimulated.

I thought that Guo Da's death was because of the fall from the building, but I didn't expect the real cause of death to be scared to death, if it wasn't to fall to death, then the fall was just a cover-up, but there is another point that makes me wonder, if Guo Da was scared to death, then the murderer has no need to throw the body off the roof, which can only increase suspicion. A normal old man died suddenly, and he had no children and no daughters, I believe most people would not care, but if he fell to his death, the police would definitely intervene as soon as possible and do an autopsy, and the cause of death could be found out at that time.

If you want to say that he was scared to death, what scared him to death, Guo Da is a person in his sixties, he has seen all the winds and waves at such an old age, not to mention the tide of that sport, his psychological quality is far from being comparable to ordinary people, such a person is actually scared to death, what can stimulate him so much?

Continuing to read it, the report wrote that the deceased fell from the building about 30 minutes after the heart burst, because there was no heart pumping, so the deceased bled less after the fall, and a large amount of blood of the deceased accumulated in the body, resulting in a very severe mortis. According to various biological indicators in the body of the deceased, the time of death of the deceased was around half past five yesterday afternoon.

I remember that yesterday afternoon it was almost six o'clock when I entered the tube building to visit my home, that is to say, half an hour before, Guo Da was already dead, but Zhang Lei said that he heard Guo Da call him to go to the roof, and he went to the roof, which is obviously not right. In addition, I still can't figure out whether the deceased fell from that point in time, was it a coincidence or an accident that he fell from that location? Because I happened to be visiting that house, the body just fell from the opposite window. If it was a coincidence, it would have been too much of a coincidence, but if it was intentional, then he must have been aware of my whereabouts at all times, and I didn't notice that anyone was following me at the time, and no one was out of the household's house, so it was impossible for the head of the household to report the news, so it didn't make sense.

Wrong! When I visited that house yesterday, it seemed that someone had come to borrow something, and I was so focused on the investigation that I didn't notice who was coming.

And the reason why the murder wanted me to see Guo Da fall from the building was to let the police find the deceased in the fastest time, and then find Zhang who was staying on the rooftop, so as to confirm the evidence of his murder.

It's a deep routine, but these are just my guesses, and there is no conclusive evidence to prove that my inference is correct, but I have an eye in my heart for the person who went to borrow something, this person is very likely to be the murderer, and no matter how bad it is, he is also an accomplice.

Guo Da's autopsy report didn't have much, and the incense burner on the rooftop was also mentioned later, and it was no surprise that the fingerprints on the incense burner also belonged to Zhang Lei after being detected. Secondly, there are five palm prints on the railing, Zhang Bin extracted the palm prints on it last night, and after testing and comparison, four of the palm prints belong to Guo Da, and there is also a broken palm print, and the broken palm print does not belong to Zhang Lei or Guo Da.

Another unknown clue, this clue is the same as the cigarette butt found in Du Xianchao's house before, it does not belong to Zhang Lei, Du Xianchao, Zhang Lei, I suspect that the fingerprints on the cigarette butts and the palm prints on the railing belong to the murderer, and the murderer is likely to be the person who came in to borrow something when I visited yesterday.

Put down Guo Da's autopsy report, at this time Zhang Bin has finished reading Zhang Lei's autopsy report, the two exchanged with each other, I began to look at Zhang Lei's autopsy report, Zhang Lei's autopsy report is only three short pages, the first page is written with the time of his death and the cause of death, after examination and identification, the time of death was determined at eleven o'clock last night, the cause of death was rope strangled in the trachea, resulting in suffocation.

The deceased's body was not found to have scars, after autopsy, although the internal organs of the body were in a sub-healthy state, there were no lesions or other abnormalities, and there was no situation like Guo Da, so other causes of death were ruled out, it is worth mentioning that Zhang Lei's ears were functionally sound, and there were no lesions or damage, which means that he has no problem with his hearing, and is no different from a normal person, so the words that the neighbors have problems with his ears are false, and he deliberately pretended to be.

Like the previous two cases, the fingerprints left on the incense burner were the same as the previous two incense burners, and Zhang Lei's fingerprints were detected on the sales list found in the drawer.

Among the three cases, only three fingerprints were not left by Zhang Bin, one was the fingerprint on the cigarette butt under the bed of Du Xianchao's home, the other was on the railing of the rooftop, there was a palm print that was not left by him, and finally there was the fingerprint left on the ashtray in Du Xianchao's home, which was consistent with the fingerprint on the cigarette butt. In addition, all the fingerprints were left by Zhang Lei, and from this point of view alone, Zhang Lei could almost press Zhang Lei on the sinner's body and couldn't get up.

I put the report down, scratched my head with a headache, and after reading the autopsy report, I came up with some conjectures, although these conjectures cannot be used as evidence, but there are some methods, and there are a lot of doubts, if these doubts cannot be solved, I am afraid that Sun Jianguo will not be able to close the case.

When Sun Jianguo saw that I had finished reading it, he looked at me with a smile and asked, "What's the matter, is there a result?" Do you see anything? ”

I told the truth: "I have some clues, but many places are still very obscure, and I don't understand what the situation is." ”

Sun Jianguo looked at me with interest: "What didn't you understand?" What clues did you understand? Speaking out and discussing, maybe what I'm missing is your clue, and I'm a little confused now, because of the lack of evidence, so many places are not connected. ”

I shared the clues and confusion I had made, and I emphasized that when I visited yesterday afternoon, someone came in to borrow something, and said that I felt that it was an important point.

"It's hard to say, maybe it's a coincidence, if he wants to get your attention without such a risky method at all, it is rare for a murderer to approach the police for information, and they would rather use a more conservative method than use such a risky method. He could have dropped the corpse downstairs, the sound of the fall was so loud that it would definitely attract the attention of the residents, and then his goal would be achieved, so there was no need to do more. ”

"As for the fingerprints on the cigarette butts and the palm prints on the railing, I think it really needs to be investigated, but I feel that these two points are not easy to investigate, first of all, the cigarette butts may be Zhang Lei's scattered cigarettes for others to smoke, so they were thrown downstairs, and the murderer thought that Zhang Lei smoked, so he picked them up. However, this does not explain why Zhang Lei's DNA was detected on cigarette butts. ”

At this time, Zhang Lei suddenly said: "This is very easy to do, I suddenly figured out one thing, we have always been obsessed with cigarette butts from Zhang Lei, because cigarettes are a brand." But cigarettes can be bought anywhere, if the murderer bought cigarettes from somewhere else, scattered cigarettes to Zhang Lei, and finally took back the cigarette butts, then it can explain why Zhang Lei's DNA can be extracted from the cigarette butts, and there are other people's fingerprints. ”

Sun Jianguo frowned and thought for a while, then suddenly stretched his brows and knocked on the table and said, "Hey, you kid has something, keep talking, I see what you think." ”

Zhang Bin hesitated and said: "I think it's very bold, and even a little ridiculous. ”

"It's okay, the case hasn't been closed yet, anything is possible, we have to make bold assumptions, list possible situations, and then follow these possibilities to find clues and verify them."

"The murderer is not one person, but two people, but these two people don't know each other, and it feels more like one person is erasing the evidence of the other. When I was investigating evidence at several crime scenes, I found that many of the places that should have been stained with fingerprints had been wiped clean. If the murderer was wearing gloves, there was no need to wipe them twice, and the murderer must have been wearing gloves, which is beyond doubt, because I did not extract fingerprints from the quilt on the bed or in the bedroom, indicating that the murderer must have been wearing gloves when committing the crime. ”

Zhang Bin stopped at this point, as if to give us a time to think, and after two minutes, Sun Jianguo said: "Go on, you just say yours." ”

"When the murderer killed the first person, that is, when he killed Du Xianchao, the other person was already planning the finishing work of the whole case, including the preparation of blaming Zhang Lei, so he had a cigarette butt under the bed and asked him to buy three incense burners, and his fingerprints were on the incense burners."

"But the person who did the finishing work in the two cases, because he didn't see what the killer touched the whole time, had to wipe as much as he could, which resulted in fingerprints on the ashtray and palm prints on the railing on the balcony."