After comprehensive analysis, it is said that biopoisoning and acupuncture point murder are the only possibilities, and no matter what, we must first investigate in these two directions.

Although Li Xu had his own judgment in his heart, when he heard the last concluding statement, he couldn't help laughing, looked at Chang Kun with crooked eyes, and asked him, "What about the haunting?" You don't include hauntings in your investigation? ”

She laughed as she said as she picked up three photographs from the layers of materials on the table and handed them to him, pointing out three places with her fingers to show him.

What Li Xu pointed out was the female ghost he had seen in the photos taken by Cheng Lili before, with black clothes, black pants, white footcloths, and long black hair draped like a waterfall, standing away from the crowd, next to an old camphor tree. Because it was too far away, and it was only inadvertently swept by the camera, it was very blurry, but no matter how blurry it was, it could be seen that the female ghost's gaze was pointing at Yu Chenglin's murder scene.

Chang Kun was not surprised by what Li Xu raised, and only said lightly that they found out when the photo was developed. Li Xu asked him how he explained this, and he said that someone was pretending to be a ghost and trying to make people think that the constant death in the village was caused by haunting. Li Xu asked again if he had found out who was most likely to do such a thing. The answer is that the elimination method is being used, to get rid of the two children who do not match the body shape, to get rid of those villagers who appear in the photo at the same time as the female ghost, and it is also necessary to exclude people with obvious physical characteristics such as those who are too fat or too thin, and the rest are analyzed by computer technology before it is possible to draw a final conclusion, although there are not many remaining villagers, but to draw accurate conclusions, the workload is actually quite large.

Li Xu asked them for a list and detailed information of the remaining villagers in the village, as well as a miniature copy of the topographic map of Chenjiawu. Chang Kun instructed the people below to bring her a copy, and then wanted to send her away, but what Li Xu did next made him and Lao Miao dumbfounded.

Li Xu picked out eight photos from the scene of Yu Chenglin's murder and lined them up, using a marker to circle a figure on each one. Chang Kun and the others did notice the female ghost in the photo, but they never expected that there would be such a discovery if the photos were arranged in order.

The photo circled with a marker is a fourteen or fifteen-year-old boy in a blue sweater, who was also watched outside the crowd and was swept in by the camera, but he was close to the scene of the murder, so many photos were taken, and they were taken very clearly, and his facial features and expression were all clear at a glance: he was a thin, a little dirty, wearing ill-fitting clothes, a gloomy expression, and a little sneaky in his eyes.

Li Xu said: "If you look carefully at the direction of this boy's gaze, from the first to the fourth, his eyes are looking in the direction of the camera, that is, he is looking at the scene of death. From the fifth, his gaze began to deviate, and by the time of the eighth, what he was looking at was not the murder scene at all. In other words, he was not focusing on the scene of death or the deceased from the beginning, but was focused on a certain person. The man was on the scene at first, but then slowly walked away, so the boy's gaze drifted, and his attention was always on a particular person. ”

This is an undeniable conclusion.

Li Xu asked them to think carefully and hard, and asked them to use the elimination method to find out whether the target person the boy was staring at was a reporter, a policeman, or a villager. She didn't think a fourteen-year-old boy would be a murderer, she only wondered if the boy would find the killer and keep a close eye on it.

Chang Kun and Lao Miao carefully looked at each photo several times, picked up the last one, and said very firmly: "This photo was taken after the body was carried into the car, and all the police were there at that time, and the reporters were also there, and many of them were together." But Yu Enhao's eyes were looking away, so he must have paid attention not to reporters or policemen, but to someone in the village. ”

The boy's name was Yu Enhao.

Since Yu Enhao looked at the scene of the murder at the beginning, the person he paid attention to must have been next to the deceased at that time. Chang Kun and Shi Ling discussed and recalled, took out the frontal photos of nine villagers from the pile of photos and handed them to Li Xu, saying: Before and after Yu Chenglin's death, these nine people appeared at the scene.

As he spoke, he wrote each person's name on the back of each of the nine photographs for Li Xu's analysis. She has a good memory, and after watching it twice, she basically knows who is who, but this does not help her analyze who the fourteen-year-old Yu Enhao is paying attention to.

After that, she looked at the materials of the nine deceased who had been officially registered since the case was filed, and only the last four cases were relatively complete, but the autopsy report was written as "unknown cause of death".

The cause of death is unknown.

This is the weirdest part.

Li Xu looked at the photos and listened to the description, thinking that the cause of Yu Chenglin's death would be heart failure caused by some special circumstances, but it was not, and the deceased's internal and external organs were not damaged or diseased.

Li Xu flipped through the materials, the movements in her hands suddenly stopped, and she saw a report of potassium hydride poisoning.

The rest of the reports are all "unknown causes of death", but this one is strange, and it is clearly written that it is potassium hydride poisoning, and the deceased is called Li Yunli.

Chang Kun told her that the villager named Li Yunli had been dead for more than 20 days, and the coffin was opened for an autopsy before it was confirmed that it was potassium hydride poisoning.

The deceased Li Yunli in this report lived alone in Chenjiawu, her husband ran away in the early years and never returned, and her children have settled in other provinces. On March 5, some villagers found her dead at home, and because she could not be contacted by her family and no close relatives came forward, almost no one raised any suspicions, so the village paid for her burial. Because Chenjiawu is located on a high mountain, there are many mountains and fields, but the people are poor and have old ideas, so the cremation cannot be carried out, and they have always acquiesced to their burial, but fortunately, they can be put up for an autopsy.

In fact, from this time on, Li Xu already had a clear conclusion in his heart, believing that Li Yunli's case was separate and had nothing to do with other death cases, because if a person can kill people invisibly, why bother to make a potassium hydride inexplicably? Therefore, there was another person who killed Li Yunli, this person chose a good time, took advantage of the high incidence of death in the village to commit the crime, and almost fooled the past, but unfortunately, the luck was not too good, not only was it discovered but also manipulated, so that it didn't take many days to solve the case and then go to prison.

The murderer of Li Yunli is called Yu Lao Coffin, Li Xu said this, raised his hand and pointed to a certain photo nailed to the wall, I looked in the direction she pointed, and saw a recognized face at a glance, and quickly got up and pointed and asked her if this was the case.

She said, "Yes." ”

I took the picture off the wall, held it in my hand and looked at it for a while, and said, "I've seen him." ”

Li Xu was stunned, he never thought that there would be such a stubble, and he never imagined that the honest farmer Yu Lao Coffin who lived in Chenjiawu four years ago would be related to me who met four years later.

She stared at me and asked a stack of questions: how did she meet him, where did she see him, when did she see him, and why did she see him, except for ......

I made a gesture to stop, told her to wait for a while, and then flipped through the information myself, and learned more about the background of Yu Lao's coffin, formerly known as Yu Guoqiang, because he was an old carpenter who made coffins for a living, so everyone called him Yu Laoqi, and there was an apprentice named Yu Suzhou, who was picked up and raised since childhood, and became an apprentice and a son. Both the master and apprentice are good-tempered people, diligent and diligent, never grudge against others, and are helpful, but it was out of helplessness that they moved to Li Yunli to kill.

I told Li Xu that I didn't know Yu Laoqi, but I met him once, and he knew Su Mosen, and there seemed to be some business dealings between the two. Once, in the middle of June twelve years ago, Su Mosen answered a phone call one day and was about to go out, and suddenly answered another phone, as if he was in a hurry. He couldn't tell me apart, so he gave me a thick envelope containing five thousand dollars, and a small brown glass bottle the size of a little thumb, which contained white powder, like some kind of medicine. Asked me to send it to a room at the end of the corridor on the second floor of a hotel next to the West Railway Station to a man surnamed Yu, I went, it was the person in the photo, Yu Lao Coffin, I didn't have much impression at the time, I thought he was a very honest man.

Li Xu suddenly let out a "ho", with an incredulous expression on his face, and asked me carefully about the small brown glass bottle and the contents inside.

I gestured with my hand and described it in detail.

She stared at two big dark bright eyes and asked, "Do you know what the powder is in that bottle?" ”

I shook my head blankly: "I didn't open the study. ”

She suddenly snorted coldly and said, "If you guessed correctly, it should be potassium hydride." ”

I froze.

Li Xu laughed strangely, stood up straight and said: "At that time, we couldn't figure out where an honest farmer like Yu Laoqi, who had almost no contact with the outside world, got the powdered potassium hydride, which turned out to be given by Su Mosen and passed through your hands!" ”

I also thought it was incredible, so incredible, I never thought it would be like this.

It turned out that the brown vial contained a deadly poison, and Yu Lao Coffin had really used it to murder a woman after getting it for many years.

I never dreamed that I also participated in one of the many incidents in Chenjiawu four years ago, and it was actually in this form!

I can't even think of it.

I still remember some of the things he said to me on the day I saw the old coffin twelve years ago, he thanked me for this trip, and asked me to thank my grandfather, and asked me to tell my grandfather that the exhaust, drainage system and ventilation ducts needed to be strengthened, and there was not enough wood, and asked me why I didn't bring another drawing, or something. I told him that my grandfather didn't mention the drawings. He said oh, that's okay, I'll contact him next time.

That's it.

Li Xu stared at the floor and chewed on the words I had just said, the drainage system, the water pipes, the drawings.

After chewing a few times, a fierceness suddenly appeared in her eyes, and then she cursed a swear word: "Damn! ”

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