After finishing Liu Xiaoyue's matter, Xu Tiannan put on his shoe covers and work clothes, and followed the forensic team to the scene.
The burned room was a mess. Although most of the foyer and living room of the villa were made of marble and crystal stone, most of the combustible furniture in the house had been reduced to ashes.
The female secretary's body was located in the foyer, and Liu Jianmin's body was located in the living room. Both bodies were in a burnt state and were about 8 meters apart.
However, the large area of the floor in the living room was densely covered with smashed wine bottle fragments, leaving few people with no place to step down.
Therefore, even Xu Wudi could see the cause of the fire in this case at a glance. He vaguely smelled the residual smell of alcohol in the fire scene and muttered: "Oh my god! How many bottles of wine did the murderer smash?"
Xu Wudi looked at the fragments on the ground and immediately analyzed them in a decent manner: "Master Meng Xue, according to my preliminary observation, the murderer poured a large amount of liquor into the house, and then used the flames of the burning liquor to ignite the furniture."
Li Mengxue nodded and led everyone carefully through the foyer. Then he picked up a few larger wine bottle fragments from the ground. He compared them with the remaining bottles of wine in the marble wine cabinet in the living room and found that they were all
Some well-known domestic and foreign brands.
After inspection and comparison, Li Mengxue said: "The production batch number in the wine bottle fragments on the ground is consistent with the remaining bottles of wine in the wine cabinet. It is initially estimated that they are from the same batch of goods, so the murderer chose to collect materials locally and directly from the wine cabinet.
The liquor was taken out and set on fire."
Upon hearing this, Xu Wudi immediately thought of something and said loudly: "If this is the case, then I'm afraid this is a premeditated crime. The murderer had already planned to use the contents of the wine cabinet after he killed Liu Jianmin.
Alcohol was used to set fire and thereby destroy the scene.”
Just after Xu Wudi recorded this clue, Xu Tiannan came out of the foyer and said, "I'm afraid it may not be a premeditated crime."
Xu Wudi said: "Ah? How did you see that?"
Xu Tiannan motioned to the other two to come over. When a few people gathered in the foyer at the entrance, he picked up the flashlight, illuminated the head of the female secretary's corpse, and explained.
——"You see, although the body is charred, it is not difficult to see that there is a serious trauma on the temple of the body. This trauma is probably the direct cause of her death."
——"The length of the wound is not very long, visually estimated to be between 2-2.5cm."
——"But the wound was at least 3cm deep under the skin, and the skin and flesh were severely everted, and some tissues in the body were even brought out."
Xu Wudi glanced at the wound and asked doubtfully: "This... what kind of weapon can cause such a wound? Could it be a barbed mace?"
Xu Tiannan was almost amused by these words, but after all, this was a murder scene and had to be serious, so he whispered: "Invincible, let me ask you, if you were the murderer, would you take a mace to the streets?"
Xu Wudi: "How is that possible? I'm not a fool!"
Xu Tiannan: "Since you wouldn't even take such a thing on the street, do you think the murderer would do such a thing?"
Xu Wudi tilted his head and thought for a while, "Why do I think you are teasing me again, both inside and outside of your words?"
"Okay, stop making trouble, I'll show you the real murder weapon."
Xu Tiannan didn't want to tease Xu Wudi anymore, so he pointed to the rockery next to the foyer and explained.
——"The rockery is located in the entrance hall, about 8 meters away from Liu Jianmin's body in the living room. It is preliminary estimated that this rockery is the cause of the death of the female secretary."
——"Look, there is a golden dragon on the top of the rockery. The corners of the golden dragon's mouth are upward, and there are a few raised scales at the end of the dragon's head, which exactly matches the shape of the wound on the temple of the female secretary's corpse."
——"The reason why the skin and flesh of the wound on the female secretary's temple is everted is probably because when the whole faucet was inserted into her temple and then pulled out, the upturned scales formed a barb, so that's why
It will pull out the skin and flesh tissue inside the temple, further expanding the cross-section of the wound."
——"But what I am saying now are just preliminary speculations. The fire at the scene has stained the golden dragon with a layer of black ash. Even if there is blood left, it will be obscured by the black ash, so we need to remove the whole building.
The rockery needs to be moved back for a blood test."
As soon as he finished speaking, Xu Wudi stood up again and took out a small dark brown medicine bottle and a dropper from the suitcase. In the blink of an eye, he wiped the dragon's mouth with a small piece of cloth and took it.
It is time to start the operation by lifting the dropper.
Xu Wudi's movements were smooth and smooth, just like an old forensic doctor at the scene of a murder. Unexpectedly, he was suddenly slapped on the head by Li Mengxue and scolded: "Wudi, what are you doing?"
Xu Wudi was beaten inexplicably, and he couldn't help but have doubts in his eyes, and asked: "Do you need to go to all the trouble to move this whole rockery back to the bureau's laboratory? Let's just use the luminol reagent to test the blood here, right?
That’s it?”
Li Mengxue said: "The detection principle of the luminol reagent is to produce a luminous reaction with the iron element in the blood. Do you have eyes to take a closer look at what material this golden dragon is made of?"
Xu Wudi lowered his head and took a look, and suddenly realized: "Damn it! This golden dragon is made of copper. If luminol reagent was applied to it, wouldn't it be completely bright! Fortunately, Master, you discovered it early, otherwise I would
Got into trouble again!"
Li Mengxue waved her hands in disgust and said, "Don't come over here. Go and collect all the glass shards in the room! Maybe you can find the murderer's fingerprints on them."
Xu Wudi received a scolding and muttered between the living room and the forensic van outside the house, going back and forth more than a dozen times until he filled dozens of evidence bags and finally removed all the debris in that place.
Collected.
As the broken glass on the floor of the house was removed, the scope of Xu Tiannan and Li Mengxue's investigation finally expanded.
Xu Tiannan explained.
——"This rockery is located close to the gate of the villa. If this is really the first scene of the death of the female secretary, she was most likely to have panicked and chose the road while escaping, which led to her falling and hitting her temple.
On this rockery.”
——"But if you look here again, Liu Jianmin's body is on the sofa in the living room, at least 8 meters away from the foyer. And judging from the scars on his head, the murderer directly picked up the cigarette ashes on the coffee table.
The vat hit his head, causing his death."
——"Therefore, we can judge based on the first scene of the death of the female secretary and the murder weapon used by the murderer. It is not difficult to see that the murderer did not commit a premeditated murder this time. There is a high probability that it will be characterized as a murder of passion."
Xu Wudi came over again and wondered: "What? How can you still kill with passion?"
"Don't be so talkative!"
Li Mengxue reprimanded: "The 'passion' that Brother Nan just said does not refer to how passionate the murderer was in this killing, but that the murderer suddenly suffered some serious mistake without any criminal premeditation.
Or the mind is suddenly subject to some strong stimulation, which leads to a temporary loss of reason and the ability to control oneself, resulting in a criminal behavior, which is called passion murder."
Xu Wudi nodded thoughtfully, "To put it into perspective, the murderer didn't intend to kill these two people in the first place?"
"That's right." Xu Tiannan added.
——"The choice of murder weapon is an important criterion when judging whether it is premeditated murder or murder of passion."
——"Liu Jianmin was hit to death by a crystal ashtray. Based on the shape of the ashtray, we can find that this ashtray belongs to the set of crystal utensils in the wine cabinet in the living room."
——"In other words, the murderer did not prepare the killing tools in advance. It is most likely that he suddenly got angry during the dispute with Liu Jianmin, picked up the ashtray and smashed the other party to death."
——"The death of the female secretary was even more of an accident, but we can also see that the female secretary's hands were cut off, which is enough to show that the murderer had physical contact with the female secretary at the time, and the female secretary scratched her wounds in extreme panic.
The murderer's skin, which is why the murderer had to cut off her hands and take her away."
At this point, Xu Wudi suddenly added: "This female secretary is a tiger! In this case, you should bite her with your teeth. Once it is contaminated with the murderer's DNA, the other party can't even cut off her head and take her away. In this way
It will be much easier for us to solve the case."
"Invincible, you are disrespectful to the dead again!"
Li Mengxue interrupted the other party and said: "People are social, especially for a young girl like this. She may have never been in a fight in her whole life. Moreover, she is in such a fearful situation. She only knows how to fight back.
Not bad.”
"Well, Meng Xue is right."
Xu Tiannan added: "Before I came here today, I saw two aunts fighting with others in the parking lot on Beijing Road. I found that even aunts like this who have no quality and often conflict with others are fighting.
It is difficult to bite each other at all times. After all, when everyone is emotionally excited, their inner activities should be more inclined to vent their emotions. So I guess the female secretary’s psychological activities at that time should be immediately after scratching the murderer.
Wanted to escape rather than harm the murderer further."
While talking, Xu Tiannan somehow thought of Chen Liangshan and the scars on his face and neck that were scratched by his aunt.
He also immediately wondered whether the scars scratched by the murderer by the female secretary would be consistent with those on Chen Liangshan's neck. He even made an extremely bold assumption, what if the scars on Chen Liangshan's neck were scratched by the female secretary?
?
Li Mengxue noticed something was wrong with Xu Tiannan's expression, so he asked: "Brother Nan, what's wrong?"
Xu Tiannan was stunned for a moment, the thoughts in his mind were fleeting, and he cursed himself secretly, then shook his head and said: "It's okay, it's okay, I just committed the old habit and started thinking blindly again!"
Getting back to the topic, Xu Tiannan continued to talk to the two of them.
——"So in this scene, the death of the female secretary is an important clue for us. Based on this clue, we can check out the preliminary portrait of the murderer."
——"First of all, the female secretary had physical contact with the murderer, but there were no traces of being beaten with heavy objects on her body like Liu Jianmin did."
——"It can be seen from this that although the murderer used an ashtray to kill Liu Jianmin, he had no intention of killing the female secretary."
——"On the contrary, when the female secretary was running away in a panic, she accidentally fell and hit the rockery and died on the spot. In other words, her death was a completely unexpected event for the murderer."
Xu Wudi asked again: "Did the murderer grab the female secretary's head and hit it directly against the rockery?"
Xu Tiannan pondered for a moment and replied: "It's unlikely. The rockery is too close to the main entrance of the villa. The murderer would never drag the victim to the door intentionally. That would only make the victim scream for help, thereby further increasing his own
Possibility of exposure.”
Li Mengxue recorded all the details of this case one by one, but at this time, Xu Tiannan discovered another doubt.
Xu Tiannan discovered that although the body of the female secretary was charred, it was still lying on her back on the ground. This was because the murderer had to cut off her hands and placed her in such a position.
However, the state of Liu Jianmin's corpse was obviously different. Although his corpse was lying on the ground, his entire spine showed a curved posture.
"Come here and give me a hand."
Xu Tiannan called Xu Wudi, and after a lot of effort, the two of them turned Liu Jianmin's body over. However, the moment the body was turned over, Li Mengxue immediately noticed something was wrong and shouted: "No! Liu Jianmin's
There’s something wrong with the body.”
Xu Wudi looked over and asked, "What's the problem?"
Li Mengxue did not explain, but instead said to Xu Wudi: "Give me the endoscope."
After receiving the endoscope, Li Mengxue inserted the front pinhole probe into Liu Jianmin's throat. After some inspection, he finally concluded: "Liu Jianmin was not killed by the ashtray, he was burned to death."
of!"
Xu Wudi took the endoscope and checked it in surprise, and immediately said: "It is indeed like this! There are smoke deposits in the respiratory tract, and you can also see scalded blisters! Master, you can find the problem at a glance!"
Li Mengxue said: "I just saw the surface shape of the corpse, so I thought of this."
Xu Wudi: "Tell me, what does it look like from the outside? Tell me about it!"
Li Mengxue explained.
——“In addition to looking at the dust in the respiratory tract and nasal cavity of a person who was burned to death, there are two most striking visible features on the surface of the body.”
——"One is to observe the position of the corners of the deceased's eyes, because the deceased would instinctively protect their eyes when they were alive."
——"So we need to observe whether there are wrinkles in the corners of the deceased's eyes caused by the spasm reaction. If the wrinkles on both sides of the eyes are in the shape of 'goose claws', then this is most likely caused by the burns when the deceased was alive."
It was caused by such great pain that even after the deceased was burned to death, there were still these 'goose-claw-like' wrinkles at the corners of his eyes."
——"Second, we need to observe the hands of the deceased. The corpse will not feel pain. Therefore, if a person dies first and is burned later, the tendons of his hands and fingers will shrink due to the burning, giving the appearance of a half-clenched fist.
shape."
——"But this is not the case for people who are burned to death. The person who is burned to death will suffer great pain before death, and then his fists will be clenched tightly, a bit like boxing, tightly guarding his chest. This is
Often referred to as 'fighting fists'."
After explaining this, Xu Wudi finally understood the reason behind this.
Later, Xu Tiannan further gave a portrait of the murderer.
——"What I just judged is that the murderer was a passionate murder for Liu Jianmin."
——"But since Liu Jianmin was burned to death, it is most likely because he was not hit to death by the ashtray at that time, but was seriously injured and lost the ability to resist."
——"But I believe that since the murderer knew how to chop off the female secretary's hands and then use arson to destroy the fingerprints and shoe prints at the scene, it is impossible for him not to notice that Liu Jianmin is still alive."
——"Therefore, the only explanation is that after the murderer committed the murder in passion, he found that Liu Jianmin was still alive, but he still chose to burn him to death."
——"This is enough to show that the murderer's mentality also changed during the course of this case."
Li Mengxue said: "Then why did the murderer do this? If the first passionate killing was an accident, then the later refusal to save Liu Jianmin and instead burned him to death is completely intentional homicide."
"I know, I know!" Xu Wudi replied again: "I'm afraid of being retaliated against!"
Xu Tiannan smiled and said: "Oh? Not bad, Wudi, let me tell you in detail."
Xu Wudi wiggled his nose proudly and explained: "Think about it, Liu Jianmin is still a gangster. If he is beaten for no reason like this, after he recovers, he will not be able to retaliate crazily against the murderer.
?So under the circumstances at that time, the murderer had only one way out, and that was to kill Liu Jianmin!"
Just after he finished speaking, Xu Wudi thought of something else and continued to add: "Oh! There is another possibility, that is, the female secretary was already dead at that time, and the murderer could not look back at this time, so he could only continue killing people and destroying the body.
All traces will be wiped out, once and for all!"
Xu Tiannan looked at the other party with approval and said: "It's good to think of these."
After analyzing the scene, Xu Tiannan finally concluded.
——"So this time it is not difficult for us to see that the murderer is a person who was once bullied by Liu Jianmin. Today he came to negotiate with the other party for certain things, but he accidentally killed the other person in a fit of rage."
——"The murderer is most likely alone. After all, Liu Jianmin only suffered a fatal wound on his head. If the murderer came with a companion, I believe that the other party would not dare to cover the murderer without taking action.
"
——"At the same time, we also noticed that the murderer's mentality gradually changed during the entire case, from killing with passion in the beginning to intentional killing in the later period."
——"But if you think about it on the bright side, at least the murderer's target is definitely Liu Jianmin. Even the female secretary who was present at the time did not kill him, so this kind of person will not cause too much trouble in society.
harm."
After finishing speaking, several people went to do the final inspection at the scene. However, at this time, a small piece of half-burned paper attracted Xu Tiannan's attention.
The content of the small piece of paper has basically been burned away, but half of the title can still be vaguely seen - Jianmin Demolition Company's attack on the old commercial street.
The subsequent titles had been burned, but of course Xu Tiannan remembered at this time that when Chen Liangshan was forcibly demolished that day, the name spray-painted on the excavator was the words "Jianmin Demolition Company", and that street was exactly where people were.
The so-called "old commercial street".
"No...it's impossible..."
Xu Tiannan turned over the half-burned document with almost trembling hands, but he could still see the words "Nail House" and "Chen Liangshan" in the few lines of text.
Just as he was in a trance, Wen Sibao suddenly walked in.
"Tiannan, there's something going on here."
Xu Tiannan folded the materials and put them in his pocket. He turned around and looked over and saw that Wen Sibao came in with the mobile phone of the man who picked up Liu Xiaoyue.
"Xu Tiannan: What's wrong?"
Wen Sibao pointed to the driver, "Let him talk to you."
The driver looked around the living room and said: "Officer, when I brought Xiaoyue back today, I found that the villa was on fire. I opened the door and the firefighters came in to put out the fire. But I found
I encountered a situation, and I don’t know if it’s important or not, so I thought it would be better to tell you.”
"It doesn't matter, you can tell me everything you know."
The driver nodded, "I was the first to rush into the room and saw the scene now, but I found that Mr. Liu's golf bag was missing."
Xu Tiannan hesitated and said, "Are you sure?"
The other party said firmly: "I'm sure, because Mr. Liu made an appointment with friends to play ball today, so I packed the golf bag for the boss and put it in the corner of the entrance, but now it's gone."
Just after the driver finished speaking, Wen Sibao added: "And just when we were conducting an external on-site inspection, we found two fresh footprints in the flower bed at the door."
Xu Tiannan: "Did you find it in the flower bed?"
Wen Sibao: "Yes, although there was a fire in the villa and the scene was noisy, because there were many flowers planted in the flower bed, no one else stepped in. I suspect that these two fresh footprints may be related to the murderer."
Xu Tiannan thought for a moment and said to the two of them: "There are two pieces of information that are very important. Please explain them in detail."