Xu Lang and Mao Wenshi looked around the scene again and found that in the room, except for steel products, all combustible things were swallowed up by the fire, leaving nothing behind, let alone fingerprints and footprints.

Xu Lang came to the bathroom, and saw a cup that was scorched by the fire and was very seriously deformed on the bathroom sink, Xu Lang picked up the cup with gloves and looked at it, and found that this should be a cup for brushing teeth, however, because the cup is a plastic product, it is not easy to keep it, and it is unlikely to find other clues from the cup, and the towels and other items that should exist in the bathroom are all gone, and the shelves where towels are hung are empty, There is no bucket or washbasin for putting water, and there are no traces left by the burning of plastic in the bathroom, which should be in the pile of burning materials under the window, which shows that Xu Lang's guess has been confirmed again.

Since no useful clues were found at the scene, Xu Lang and his party walked out of the scene and walked down the stairs to Dr. Hu's office on the fourth floor.

The situation in Dr. Hu's office is similar to that downstairs, the door has been dismantled and discarded, the room has been burned very thoroughly, although the bookcase has not been completely burned, but it has also been burned apart, the books and archives in the bookcase have been burned, as for the clothes and other things in the office have also been burned, the computer has also been burned black, the computer monitor has been burned and deformed, the window glass has also been burned open, there is a human-shaped white line in the middle of the room, obviously, This is where the third body was found.

After Xu Lang looked around the room, he looked at Mao Wenshi and asked, "Where is the host of the computer?" ”

Mao Wenshi was stunned for a moment, then looked under the computer desk, and sure enough, he didn't find the host, he also felt strange, so he called and asked the police officers who were still investigating the fire scene and asked: "The second fire point, where did the computer host in Dr. Hu's office go?" ”

"Oh, the main engine was taken back by the comrades of the technical section to be checked."

Mao Wenshi turned on the speakerphone when he called, Xu Lang heard it clearly, he groaned for a while, and asked, "What about the hard disk in the computer?" ”

"Huh? Oh, you are" Hearing Xu Lang's voice on the other side of the phone, he was stunned for a moment, and then subconsciously wanted to ask Xu Lang's identity.

"Hurry up, what about the computer hard drive?" Mao Wenshi urged impatiently.

"No computer hard drives found."

After Mao Wenshi got this answer, he was also stunned, he looked at Xu Lang, Xu Lang nodded at him, indicating that he understood.

After Mao Wenshi hung up the phone, he looked at Xu Lang and said, "It seems that someone took the hard drive." ”

Xu Langmo rubbed his chin and said, "Yes." ”

Next, Xu Lang and the three of them went to the archives where the burning was the worst, and the location where the bodies of several other deceased were found, and then the group returned to the Public Security Bureau.

On the way back, Xu Lang came to several conclusions.

First, before the fire broke out in Yu Duyun's room, they had piled up all the sheets, bedding, toiletries and other burning things in the room under the window, and they didn't know what to do, but it was certain that those accumulations were the source of the first fire.

Second, the computer hard drive in Dr. Hu's office was taken away, and when the body was found, no traces of the computer hard drive being burned were found on the body, and it is clear that the hard drive should have been taken out of the scene.

Third, whether it is the first fire point or the fire point in several other places, it is related to one person, that is, Yu Duyun, and the eight dead people who were lost, except for the female nurse Xu Lang had seen, the other few people were all people who had had a deep contact with Yu Duyun over the years, and they all had a deep understanding of Yu Duyun.

It can be seen that all the clues point directly to the same person, that is, Yu Duyun.

Since this is the case, then we have to find out one thing now, among the two charred corpses found in Yu Duyun's ward, is there any body of Yu Duyun, and if so, who is the third person missing? If not, then where is Yu Duyun now? Is she alive or dead, and what does this fire have to do with her?

If you want to know this, you have to rely on the forensic department, so after Xu Lang and the others came back from the fire scene, they came to the forensic office.

Xu Lang and Mao Wenshi stood in the dissection room, looking at the eight corpses lying on the dissection table and turning into a piece of charcoal, they frowned, and Ning Yanran was reluctant to come in and stayed in the office area to sort out the materials.

When Xu Lang and they came, the forensic doctors had already dissected four corpses, two of which were the bodies of the deceased found in Yu Duyun's room, why more than ten hours had passed before the four corpses were dissected, it was not that the forensic doctors were lazy, but because the corpses that had been burned by the fire, it was very difficult to find out the cause of their death before death, and it was also very difficult to determine their identities. Fat will also be burned, and it is impossible to identify the body by physical characteristics, and secondly, after the body is burned by the fire, the DNA, fingerprints and other biological samples of the human body will be destroyed, and it is not so easy to determine the identity of the deceased through these basic character samples.

However, although the difficulties were great, with the unremitting efforts of the forensic doctors in T City, the identity information of the two deceased found in Yu Duyun's room was preliminarily determined.

Because there were eight corpses, the corpses were numbered according to the situation at the scene, the corpse found at the door of Yu Duyun's room was No. 1, the corpse in the window was No. 2, the body in Dr. Hu's office was No. 3, the female nurse was No. 7, and the remaining people were others.

After forensic autopsy analysis, it was found that the age of the No. 1 corpse was between 30 and 40 years old, female, in good physical condition, and the brain had been hit by a person, however, it was not a new injury, but an old injury, and it was estimated that the deceased suffered from mental illness before his death may be related to this, and the No. 2 corpse was also a woman, aged between 40 and 50 years old, and in good physical condition, and the age of the No. 3 corpse was between 40 and 50 years old, male, in good physical condition, with a lumbar muscle strain, The corpse number six was between twenty-five and thirty years old, male, and in poor physical condition.

This is the answer that the medical examiner got after dissecting the corpse of the poem.

In addition, after the forensic doctor conducted an autopsy on the stomach of the No. 1, No. 2, and No. 3 corpses, it was found that the ingredients of sleeping pills were found in the stomachs of the No. 1 and No. 2 corpses, which should have been taken before death, and the amount of medicine was very large, and the deceased had traces of struggle before his death, but the identity was weak, and the stomach of the No. 3 corpse did not find the ingredients of sleeping pills, however, the wounds caused by the blow were found in the back of the deceased's head, in addition, the forensic doctor also examined the respiratory tract of the four corpses and found that There was a lot of dust in the respiratory tract of corpses No. 1, No. 2 and No. 6, and they should have been burned alive by the fire, which can be determined, but the No. 3 corpse, no carbon ash was found in his respiratory tract, and in addition, a deep strangulation mark was found on the neck of the No. 3 corpse, although the corpse was burned by the fire, but it was too deep to get the strangulation, and it was still detected by the forensic doctor.

It is speculated that the No. 3 corpse should have been hit in the back of the head with some kind of blunt object from behind when he was alive, causing a coma, and then the murderer used ropes and other objects to strangle his neck from behind, resulting in suffocation, and then the body was burned in a fire in an attempt to destroy the body.

Among the four corpses that have been dissected, the identity of body No. 6 was the first to be determined, the body No. 6 was not so seriously burned, and part of the body was preserved quite completely, he was a male nurse in Anding Hospital, surnamed Liu, 27 years old this year, and had been working in this hospital for two years, and the identity of body No. 3 can be identified in the same way as Dr. Hu through the information of Anding Hospital, that is, the identity of body No. 3 has also been determined, he is Dr. Hu.

As for the No. 1 and No. 2 bodies, their identities cannot be determined yet, however, according to the memories of the uninjured staff at Anding Hospital, two patients who lived in the same ward as Yu Duyun, one was named Chen Liuhui, Chinese New Year's Eve who was seven years old today, she used to be an employee of a securities company in T City, and later because of work problems, she was burdened with a lot of debts, not only was she fired from the company, but also had to compensate the company and customers for losses, so she suffered from depression, so divorced her, Chen Liuhui is a very fragile woman, after divorcing her husband during depression, she became even more closed-minded, so she became a mental patient.

Another woman named Liu Fangqin, 47 years old this year, the same age as Yu Duyun, she was born with mental illness, when her parents were still alive, she has been taken care of by her parents, but since her parents died, there are no relatives, with the help of relatives and friends, she was sent to Anding Hospital for treatment.

The forensic doctor determined that the age of the No. 1 corpse was between thirty and forty years old, and it is certain that she should be Chen Liuhui, because the corpse was burned by the fire and had no DNA and fingerprints, so the forensic doctor could only judge the age of the corpse according to the bone age of the corpse's bones, and this age speculation is still relatively scientific.

The identity of the No. 1 corpse has been determined, so there is no way to determine the identity of the No. 2 corpse, first, there is no biological samples such as DNA and fingerprints, and there is no way to compare biological data, and second, the age of the deceased is similar to Yu Duyun's age, and there is no way to determine whether she is Yu Duyun or Liu Fangqin, as for the identities of the remaining four corpses, the forensic doctor has not yet conducted an autopsy, and there is no way to determine it for the time being.

After Xu Lang and Mao Wenshi got this result, they left the autopsy room while the forensic doctors continued to perform autopsies.

Based on the results of the forensic autopsy, Xu Lang can draw the following conclusions for the time being.

First, the No. 1 corpse in Yu Duyun's room was Chen Liuhui, which is true.

Second, the third body was Dr. Hu, who was not burned alive by the fire, but was beaten to the back of the head and strangled to death before the fire broke out, that is, he was killed.

Third, it is true that both Corpse 1 and Corpse 2 had taken a large amount of sleeping pills before their deaths, and it is true that they were burned to death by the fire, but the identity of Corpse 2 cannot be determined for the time being.

Once the conclusion is out, new questions arise.

First of all, why did Chen Liuhui and the No. 2 corpse take a large amount of sleeping pills before they died, and did they take it on their own initiative or were they forced to take it? If so, what is their purpose? Suicide? If they were forced to take it, who would be the one who forced them to take sleeping pills? Is it Liu Fangqin or Yu Duyun or the fourth person?

Secondly, Who was the person who killed Dr. Hu? According to the results of Xu Lang's investigation of Dr. Hu's office, although the scene was burned by fire, no traces of fierce fighting were found at the scene, and the other medical staff of Anding Hospital did not hear any strange sounds, so it can be judged that the person who killed Dr. Hu should know Dr. Hu, and he is very familiar with it, so there are three possibilities: first, the murderer is Dr. Hu's colleague, that is, the medical staff working in Anding Hospital, second, the murderer is Dr. Hu's patient, and third, The murderer is a friend of Dr. Hu, as for what kind of possibility it is, further investigation is needed, Xu Lang prefers the second type, the murderer is Dr. Hu's patient, however, what the facts are, still need to be investigated.

Then, why did the murderer take away the hard drive of Dr. Hu's computer after killing him, and was there anything in Dr. Hu's computer that was closely related to the murderer? If that's the case, then it's more likely that the killers were healthcare workers and patients.

Finally, why did the murderer set the fire to Anding Hospital, and it was in three different places, which is also the most critical question in this case.

Xu Lang told Mao Wenshi his conclusions and questions, and after Mao Wenshi listened, he nodded and said, "What you said, I also thought of it just now, but it is not as comprehensive as you think." ”

The two of them returned to the office area while talking, Mao Wenshi handed Xu Lang a cigarette, lit it for Xu Lang, lit one himself, and then said: "However, judging from the current situation, the murderer is likely to be Yu Duyun." ”

Xu Lang spit out an eye circle, hearing Mao Wenshi say this, Xu Lang didn't express any opinion, in fact, he thought so too.

From the fact that only two charred corpses were found in Yu Duyun's room, to the murder of Dr. Hu, the removal of the computer hard drive, the burning of the hospital's archives, and finally the death of all the medical staff who had close contact with Yu Duyun, based on this information, the murderer is Yu Duyun, but Xu Lang can't figure it out a little.

According to the results of the previous investigation, Yu Duyun has been admitted to this hospital since Jin Enpei went to high school, and since then she has been able to leave the hospital one step again, that is to say, Yu Duyun is in a semi-closed environment, no different from prison inmates, a person who has lived in such a semi-closed environment for nearly ten years, would he do such a thing?

Although Xu Lang had contact with Yu Duyun yesterday, he could be sure that she was not a mental patient, but a normal person, but, even so, how did she do this, and in addition, how did she kill Dr. Hu, you know, Dr. Hu is a man, although he is middle-aged, but how can a man have an advantage in the face of a woman, and how did she kill Dr. Hu? And to do it without attracting the attention of the other officers on duty?

More importantly, if the burning of the archives room is to clear her data files in that hospital, then it is impossible to take away the hard disk of the computer, Yu Duyun was a factory worker without much education before she was hospitalized, and the popularization of computers only began in recent years, how did a person who has been isolated from outsiders for nearly ten years know about the existence of computers? How do you know about the existence of computer hard drives?

These problems cannot be explained until the identity of the No. 2 corpse is determined, since this is the case, what we need to do now is to first figure out the identity of the No. 2 corpse, and then to find the whereabouts of Yu Duyun and Liu Fangqin, as long as one of them is found, then the identity of the No. 2 corpse is about to be revealed.

Xu Lang told Mao Wenshi about this speculation, and Mao Wenshi also thought of this, so he arranged for someone to investigate Liu Fangqin's family, as well as the whole city to search for Yu Wanyun's whereabouts.

From last night to now, more than 20 hours have passed, Xu Lang and they have not eaten anything except for a few buns in the morning, Mao Wenshi has no appetite to eat, after all, there is such a big thing in T City, the case has not been detected, and it is normal for him to not be able to eat, but, as the old saying goes, people are iron and rice are steel, and if they don't eat a meal, they are hungry and panicked, everyone is outside in the wind and rain to conduct investigation work, Xu Lang They can't go out to eat, as for Xu Lang, not to mention their reception banquet, The case of Jin Enpei's murder has not been solved, and now there are 322 major arson cases, how can you talk about the wind banquet? So, a few people soaked a few buckets of instant noodles in the office area, even if they had lunch and dinner.

When Xu Lang was waiting for instant noodles, he was not thinking about the arson case, but about Yu Duyun, he and Ning Yanran had only gone to find Yu Duyun yesterday, and there was a fire in the hospital at night, now, Yu Duyun is alive or dead, and all the archival materials about Yu Duyun have now been burned by the fire, and there is no way to find out, Xu Lang doesn't believe that there is such a coincidence in the world, which must be related, Xu Lang's first thought is 'them', could all this be done by 'them'?

The more Xu Lang thought about it, the more likely he felt that this was the case, but these were just Xu Lang's guesses.

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