Criminal Investigation Chronicle

At five o'clock in the afternoon, the fingerprint comparison results showed that the fingerprints extracted from the victim Zeng Qian matched with Lin Chong's fingerprints.

In the interrogation room of the police station, Zhao Lei looked at Lin Chong and asked, "From 9:12 p.m. on September 11 to 13:1 a.m. on the [-]th, where are you and what are you doing? Who can prove it?"

Lin Chong was expressionless, "I was sleeping in the dormitory at the time, and the other three roommates in the dormitory can prove it."

Zhao Lei: "But except for one of your roommates who is sleeping soundly, the other two have unanimously proved that you sleepwalked out that night. As for when you came back, no one knows. It is also because you have sleepwalked many times before and have not done anything. It's something out of the ordinary, so the roommate didn't take it to heart. So, you don't have a sufficient alibi?"

Lin Chong: "I don't know if I had sleepwalking that night. I have no grudges against Zeng Qian. It can even be said that I have been secretly in love with her since high school. I blame myself for what happened to her. So look down on her. If you are not present, I can't provide it. I was unconscious when I was sleepwalking, or I didn't know what happened. I can't recall what happened while sleepwalking. But you know, I have no motive for killing .”

Zhao Lei: "Then take a look at this. I found it in your locker in your dormitory."

Lin Chong looked at the box that Zhao Lei threw over. It was a box of condoms, which was given out when the school was teaching AIDS-related knowledge. Everyone had a box, and one box contained two condoms.

Zhao Lei: "It has already been tested, and there is only your fingerprint on the box. Now there is only one condom left in the box. Where is the other one? Is it the one that was not found at the scene of the crime?"

Lin Chong opened it and took a look, and there was indeed only one left, "I don't know where the other one went. Since the school distributed it, I kept it in the cabinet. At that time, I put a box on the ground and picked it up by myself, so there was only mine. Fingerprints, I can't explain the rest."

Zhao Lei left the interrogation room and quickly wrote on the paper: Subconscious crime?Deliberate crime?

"What do you think?" Outside the interrogation room, Vice Captain Li Liang asked. "Let me talk about it first. Although I have a good impression of this kid and he is my junior, but public and private are clear, and I am not partial. At present, all the evidence points to Lin Chong. Let me analyze and analyze. If Lin Chong is The murderer, and I have already told you about the situation of Lin Chong's sleepwalking before. From this point of view, there are no more than two situations. One is that Lin Chong has planned for a long time to commit this case, and the other is that Lin Chong did not know it when he was sleepwalking. Let me talk about the first case first. Everyone has read Lin Chong’s files. This kid has good grades, a high IQ, and is familiar with criminal investigation procedures and methods. There are a lot of clues, and they are not covered up at all. It is possible that Lin Chong did it deliberately, leaving clues to guide us, and then using his own sleepwalking to evade the crime of sleepwalking. There is no similar precedent in China. Is it necessary to commit crimes while sleepwalking? To be held criminally responsible, you still need to issue a certificate from an appraisal institution, and then report to the judicial department for judgment. Intervention, but I am very curious about how a person completes difficult crimes such as anesthesia, sexual assault, and murder while sleepwalking. I asked Lin Chong’s family and roommates, and they all said that although Lin Chong had sleepwalking, However, when sleepwalking, the state is not enough to complete these actions. In addition, I have also consulted some doctors in mental hospitals. They all said that they have never seen a sleepwalker who can complete such a series of complex behaviors, including sleepwalkers who have been reported abroad. Many people think that driving purposefully to kill people while sleepwalking is mostly pretending to evade the law. So I think everyone should check this case carefully to see if there are any loopholes, because once it is determined that Lin Chong is the murderer, It is very possible that he does not have to bear criminal responsibility." After Zhao Lei finished speaking, he looked at the others.

"Check the source of anesthetics. Large doses of anesthetics are strictly controlled, and not everyone can get them. If it can be proved that Lin Chong obtained the anesthetics while he was awake, it will be very useful for his sentencing." Deputy Captain Li Liang said.

On the morning of September 9th, the police officers who came back from the police academy brought back news, “On June 15th, the police academy laboratory lost part of the inhaled anesthetic—isoflurane, which was consistent with the anesthetic detected in the victim’s body. Later, the results were not found out, and they were not taken seriously. However, after investigation, it was found that the student who was on duty in the laboratory that day was Lin Chong, because Lin Chong had always performed well in the police academy, and the police academy did not suspect him." "The autopsy also had further investigations." According to the results, according to the pharmacodynamics and pharmacokinetics of the anesthetic in the victim, it can be judged that the time of death of the victim was between 6:20 am and 9:13 am on September 12, and the time when he was anesthetized, It was around 10:12 p.m. on September 40." The forensic doctor also brought more accurate inspection information.

"In this way, the victim was anesthetized and comatose after the lights were turned off at 10 o'clock in the dormitory, and before the door was locked at 11 o'clock, and then waited until early in the morning when no one was around to commit the crime. However, during this period of more than an hour, the murderer took the victim Where is it hidden?" Li Liang analyzed.

"It is understood that the time when the victim returns to the dormitory at night is not fixed, but it is generally very late. After evening self-study at [-] o'clock in the evening, he often walks on the playground for an hour or two. Many night lighting facilities on the playground have been broken. , and in the corner of the playground, there are overgrown weeds and rich vegetation. If you want to hide someone in a certain corner, it is very difficult to find without deliberately looking for it.” Zhao Lei explained, “I will go to the police academy right away to see if I can find it.” Find clues where the victim was hiding."

In the afternoon, Zhao Lei returned to the police station dejectedly, "I didn't find the place where the victim was hiding, maybe it was cleaned up. There are no anti-theft windows on the second floor of the dormitory building. After the murder, Lin Chong could climb from the first floor to the second floor and climb over." Go in and interrogate Lin Chong again."

trial room.Zhao Lei said expressionlessly, "Tell me about your crime history."

Lin Chong said firmly: "I didn't do it, I will never hurt Zeng Qian, no matter awake or sleepwalking."

Zhao Lei: "Can you guarantee that you won't hurt others when you sleepwalk? Although judging from your sleepwalking experience in the past five years, it's true that you haven't done anything out of the ordinary, but can you guarantee that you won't do it every time you sleepwalk? I have consulted many professionals who study sleepwalking, and although they have studied a large number of cases, they cannot guarantee what a sleepwalking patient will do during sleepwalking."

Lin Chong: "If I were the murderer, I have no less than ten ways to make it impossible for you to find out that I did it."

Zhao Lei: "This is exactly what makes you great. Even if you are proved to be the murderer, you just need to insist that you committed the crime while sleepwalking, and we have nothing to do with you. We can only send you to compulsory treatment. You don't have to bear criminal responsibility. .”

Lin Chong disapproved, showing a look of disdain: "Subjective, stupid."

Zhao Lei ignored it and continued to ask: "On June 98, 6, you were on duty in the laboratory, and a large amount of anesthetics were lost in the laboratory that day."

Lin Chong: "I know about the loss of anesthesia, but it has nothing to do with me. Officer Zhao, have you ever thought that if someone deliberately planned to frame me at that time, through careful planning and deployment, he committed the crime of September [-]th?" The case, is this murderer terrible? At present, it seems that all the evidence shows that I am the murderer, and I am completely unaware of what I did when I was sleepwalking. In other words, I cannot confirm whether I am innocent. If there is no breakthrough in this case, then I will become a scapegoat for the real culprit, and the real culprit will continue to be at large, watching the jokes of the police in a certain corner."

Zhao Lei: "Then what evidence do you have for what you said?"

Lin Chong: "There is no evidence, but it is obvious that this is a long-planned murder case. Zeng Qian was the victim, not by accident. She committed the crime at the police academy, raped first and then killed in the middle of the night. Such a complicated crime is not A sleepwalker can do it. But I can't prove what I did while sleepwalking. Officer Zhao, I can't even prove my innocence now. I can only ask you to thoroughly investigate this case and catch the real culprit. Because Without the help of criminal investigation methods, I can only reason on my own. I think the murderer knew about Zeng Qian’s experience five years ago and also knew that I had sleepwalking, so he stole anesthetics from the laboratory as early as June when I was on duty. , Dormant observation for many days, chose to commit the crime on September 6. Before that, he also stole the condom I put in the cabinet to further frame him. He knew that Zeng Qian would walk on the playground until late after studying at night, I also know that Zeng Qian is not very popular, and my roommate doesn't care much about when she will return to the dormitory, so taking advantage of the lack of people and lights in the playground at night, he anesthetizes Zeng Qian and commits crimes late at night. Maybe he met me who was sleepwalking, and then deliberately Leaving my fingerprints at the scene and not covering up the crime, so that you can quickly arrest me and make him his scapegoat."

Zhao Lei: "Lin Chong, your deduction has some truth, but the so-called authorities are obsessed, let me tell you that you sleepwalked after the lights were turned off on the evening of September 9, and the frequency of your sleepwalking is not high, and there is no fixed pattern. In other words, the so-called The real murderer, it is impossible to judge whether you were sleepwalking that night, but your roommates all proved that you happened to be sleepwalking that night. If the murderer was really a few months ago, he stole the anesthetic while you were on duty, and stole If you bought a condom from your closet, how could he take such a big risk of whether you would sleepwalk that night when he was about to commit a crime? If you didn’t sleepwalk that night, then he couldn’t succeed in framing you, You can't leave your fingerprints on the scene. This uncertain factor is very important. But if you think about it carefully, if you meet the conditions you mentioned above and can completely commit the crime, I think you should be the most suitable. As for whether you are sleepwalking, you are the one who knows best! Did you really sleepwalk that night? Or did you pretend to be sleepwalking and commit a crime?" Zhao Lei's voice gradually increased, and his tone became more severe.

Lin Chong: "Officer Zhao, this is all your subjective assumption, let me out, and I will catch the murderer myself." Lin Chong replied frankly.

Zhao Lei left the interrogation room.After a while, a police officer came to Li Liang with the polygraph results and said, "Captain Li, Lin Chong passed the polygraph." A person who has been trained, the polygraph does not work much for him."

The investigation in the next few days did not make any significant progress. Lin Chong insisted that he was not the one who did it, and the police handed Lin Chong over to the procuratorate based on the existing evidence...

Two months later, in mid-November 98, the first-instance court ruled that Lin Chong's crime of raping and killing Zeng Qian was established, but because he was in a state of sleepwalking when he committed the crime and could not control his actions to cause harm, he should not be held criminally responsible. Therefore, Lin Chong will undergo compulsory treatment...

Zhao Lei lit a cigarette. During this period of time, he had put all his energy on the September [-]th case, and he was still a little puzzled.On the surface, regardless of Lin Chong's state at the time, he was the murderer in this case, but Zhao Lei subjectively did not want to believe that Lin Chong was the murderer. Putting aside his subjective emotions, in Zhao Lei's view, Lin Chong did not have the motive for committing the crime. Chong left a good impression on Zhao Lei, except that he was a little conceited. "Could it be that because he failed to pursue Zeng Qian and harbored hatred, he deliberately planned to kill Zeng Qian? It doesn't make sense. Judging from Lin Chong's files, including many contacts, he should be a sunny, positive young man with a bright future. , why bother to ruin your future by doing such a thing?"