Li Rui looked at the sisters and brothers laughing with a smile on his face, and his heart was a little warm, at this moment, the mobile phone in his trouser pocket suddenly rang, and he hurriedly took it out to see, and saw that it was the forensic doctor surnamed Liu who called, it is estimated that he has arrived at the door of the hotel, and he is busy saying to the two sisters and brothers: "You two rest first, I'll go see a friend." After speaking, he hurriedly walked outside the house, and at the same time answered the phone.

Two minutes later, Li Rui met the forensic doctor surnamed Liu at the door of the hotel. He is in his forties, with a short flat head, gray sideburns, wearing a pair of myopic glasses, ordinary appearance, wearing casual clothes, standing on the sidewalk, just like ordinary people, who knows that he is the leader in the ranks of forensic doctors in the criminal police detachment of the Municipal Public Security Bureau?

Li Rui shook hands with him first and introduced himself. The forensic doctor's name is Liu Rui, and his name is also a single word, and it is pronounced the same as Li Rui's name. Both of them were surprised by this, but they quickly became acquainted with each other because of this fate. Liu Rui is currently serving as the deputy director of the Forensic Identification Center of the Municipal Public Security Bureau, and he is the first knife in the ranks of forensic doctors, otherwise he would not have been found out by Director Zhou Yuansong and recommended to Li Rui.

After the two got to know each other, Li Rui asked Liu Rui to wait, walked aside and called Dong Jieyu, wanting to borrow her office for a while. How could Dong Jieyu disagree? Without even asking him what he wanted to borrow the office for, she directly agreed.

Hanging up the phone, Li Rui took Liu Rui into the hotel building, walked through the lobby, turned into the corridor, and soon came to the door of the general manager's office. Li Rui pushed the door and entered, the room was empty, and Dong Jieyu had already avoided it.

Li Rui invited Liu Rui to sit down, made him tea, and after the reception was done, he got down to business: "Director Liu, I want to ask you for a favor, I have an eldest brother, who is nearly ninety years old, was diagnosed with advanced lung cancer last week, and both Chinese and Western medicine have determined that he can live for at least half a year." But at about two o'clock in the middle of the night last night, he died suddenly. Afterwards, his personal doctor said that he died of respiratory weakness caused by advanced lung cancer, and slowly died of respiratory failure and lack of oxygen in his sleep, but I felt that he died a little strangely. Although he is in the advanced stage of lung cancer, his respiratory function is normal, and except for occasional cough, there is no respiratory weakness or unsustainable symptoms. ”

Liu Rui's brows furrowed when he heard this, and he said, "Oh? ”

Li Rui said: "My eldest brother is a rich man, the family is very rich, probably worried about the distribution of the inheritance caused by family conflicts, so he has been wary of his children and grandchildren, even if he was diagnosed with lung cancer, he did not inform his children and grandchildren as soon as possible, but quietly made a will, and only notified after it was made." His three sons also arrived in Qingyang yesterday afternoon, and as soon as they arrived, my eldest brother died in the evening, and he died suddenly, without any warning, I think this is too coincidental. ”

Liu Rui said: "Do you suspect that it was his sons who killed him in order to compete for the inheritance?"

Li Rui said: "I feel that there is a possibility, but I don't dare to think about it in this way, why? Because my eldest brother has already made a suicide note, you should say that since the inheritance has been distributed, there is no need for his sons to fight, and it is useless to fight, right? In this case, there is no need to kill my eldest brother." ”

Liu Rui thought for a while and said, "Is there such a possibility-a certain son is resentful because he has received too little inheritance, so he will attack the old man?"

Li Rui's eyes lit up when he heard this, and he exclaimed: "That's right, why didn't I think of it, it's very likely to be like this." Oh, he is worthy of being the chief forensic doctor of the Municipal Public Security Bureau, well-informed and experienced, and he wakes up the dreamer with a word. Director Liu, I'm convinced!"

Liu Rui smiled and waved his hand: "Li Chu, don't lift me up, I just said it casually, and it may not be accurate, let's continue to say." ”

Li Rui nodded and said, "Okay, no matter who it is, and what reason killed my eldest brother, you can't find out until you get real evidence." Even my conspiracy theories are probably imaginary. So, I want to get some evidence that my eldest brother died in his homicide. ”

Liu Rui asked, "What kind of evidence?"

Li Rui said: "Although I don't know much about criminal investigation, I have also watched a lot of TV series and novels in this area, and I understand one of them, that is, the crime scene cannot be entered by outsiders, so as not to be destroyed, but the bedroom where my eldest brother lived before his death has been entered by countless people, and the scene has been destroyed, so it is likely that there is no evidence left by criminals." At present, I think that I can only find clues from my eldest brother's body, so I asked Director Zhou to recommend you, Director Liu, and I would like to ask: As a forensic doctor, can you find anything from the body?

Liu Rui narrowed his eyes and said, "Assuming that your eldest brother was really killed, there are only two ways, in layman's terms, one is internal force, and the other is external force." Let's not talk about internal forces, let's talk about external forces, and external forces are the use of force by criminals......"

Li Rui waved his hand and said: "There is no need to analyze external forces, my eldest brother was not killed by external forces, he died peacefully and peacefully, in line with the appearance of dying unconsciously in his sleep, and there is a housekeeper on duty outside his bedroom, it is impossible to enter outsiders and kill him, and there was no abnormal movement that night." ”

Liu Rui smiled when he heard it, and Li Rui immediately realized that he had said the wrong thing, and he was laughed at and generous, and hurriedly asked, "Where did I say something wrong?"

Liu Rui shook his head and said: "No, I thought of a game that is very popular now, the Murder in the Locked Room, and I feel that your eldest brother's situation is the same as the Murder in the Locked Room." Sorry, digression, I'll continue to analyze - you say exclude external forces, then we only analyze internal forces, and internal forces are much simpler, that is, the use of drugs to kill the victim from the inside of the body, such as poisons, and medical agents that limit the normal function of the human body. As long as these drugs enter the human body, they will definitely leave traces, and the ...... can be detected by means of autopsy."

Li Rui raised his hand when he heard this, and said: "The difficulty is here, you can't do an autopsy, you can only touch my eldest brother's body at most and observe his surface body." ”

Liu Rui suddenly made a bitter face and said, "Can't you do an autopsy......?" That will most likely not find out anything. ”

Li Rui sighed bitterly: "I can't help it, because now I just privately suspect that my eldest brother was killed by someone, and I haven't told his sons this idea, and I can't tell them, in case one of them is the murderer, won't I just startle the snake? If they don't know, I can't get their permission, and I can't give you an autopsy of my eldest brother's body, you can only look for evidence of the crime through the surface of the body." Of course, once you find the evidence, I can take it and convince his sons to undergo an autopsy. Even if one of them is a murderer, he will come forward to stop it, but it is impossible for all three sons to be murderers, most of them should still support it, and if anyone blocks and opposes, it just shows his feet, and we can lock the murderer faster. ”

Liu Rui grinned bitterly and said half-loudly: "You can tell me the details of the environment of your eldest brother's room and the time of dinner, sleep, and death." ”

Li Rui told the residents about the layout of room 202, and said: "My eldest brother eats at about six o'clock at night, sleeps at nine o'clock, and dies at about half past two at midnight, and he still has a body temperature when he is found. ”

Liu Rui frowned and thought, and didn't speak for a long time. Li Rui looked at him blankly, hoping that he wouldn't say anything that couldn't help.

After two or three minutes, Liu Rui said with a solemn expression: "First assume that your eldest brother was killed by someone with drugs, and then assume that no one entered his bedroom from the time he slept until he died, then, according to my years of experience in forensic medicine, there is no external drug, such as poisonous smoke, poisonous fog, chemical agents, etc., that can suddenly erupt and poison a person after five hours with accurate timing." In addition, this kind of external drug is also easy to leave traces, and it is easy to kill the people in the outer room, and it is believed that the murderer will not use it. So we can basically deduce that the murderer used internal drugs. ”

Li Rui was a little excited when he heard this, and said, "Director Liu, you continue to reason." ”

Liu Rui nodded and continued: "The murderer probably put the medicine in your eldest brother's dinner, or the water he drank before going to bed, and after he fell asleep, the drug began to attack, restricting and affecting his respiratory system, causing him to breathe uninterruptedly, and finally died of shock." But if it is just to restrict his breathing, he will feel poor breathing in his sleep, he will wake up and struggle, and he will make movements, disturbing the sleeping housekeeper outside, and this is not in line with the reality, so I think that the murderer also mixed the drug with diazepam drugs, so that your eldest brother fell into a deep sleep, close to the state of being under general anesthesia. The two drugs work together and end up taking your big brother's life. ”

Li Rui was shocked and angry, hated and sad, and scolded angrily: "The murderer is really not a human being! If you can catch him, you must let him taste this kind of death." Liu Rui hurriedly said: "Don't get excited, Li, I'm just reasoning and analyzing, but reasoning can help us clarify our thoughts and grasp the key to the case faster and better." Li Rui asked: "If it is really like what you said, my eldest brother was drugged, then it can be detected without passing the autopsy?"

Liu Rui said: "It is not clear what kind of chemical substance the drug that caused your eldest brother's death, so I am not sure, but the detection of the latter, diazepam drugs, can not be autopsied." When Li Rui heard this, he seemed to see a piece of light from the vast darkness, and he was very happy, and said, "Then how to test diazepam drugs?" Liu Rui said: "Through blood analysis." Therefore, don't be too happy, although you don't need to dissect, but you want to get the blood in your eldest brother's body, do you have a way?"