Authenticity analysis of the answer to the death case of the crime master Shanghai Science Park

"The death of Shanghai Science Park" is a case of crimaster's criminal investigation reasoning. The deceased in this case is Lu, and the suspects are Bai, Wu and Zhu. The following is an analysis of the answers to The Death of Shanghai Science Park, a master criminal, brought by Bian Xiao. Let's have a look.

The truth of the death of the crime master Shanghai Science Park

Introduction to the death case of Shanghai Science Park;

At 20211819: 35, the Shanghai police received a security alarm from a science park, saying that all employees of a research institute in the science park died in the laboratory. The police immediately went to and blocked the scene; After investigation, the police have locked four suspects. Due to the bad nature of the case, the police now choose to make the clues public, hoping that detectives around the world will assist in the investigation.

The Death of Shanghai Science Park;

Lu yiran

Suspect in the death case of Shanghai Science Park:

, Bai, Wu, Zhu

The answer to the death case of Shanghai Science Park;

bright red

The Truth Analysis of the Death Case of Shanghai Science Park;

65438+1At 20: 00 on October 9th, a comparison report came from the root laboratory. It was confirmed that the hair in the fume hood matched the victim's DNA. The police immediately compared the fiber on the window frame of Zhu with the material of Zhu overalls; Conduct an in-depth investigation on the spot. According to the online consumption records and delivery records of logistics companies, Zhu recently bought alcohol lamps, rubber gloves, isoflurane and hemp rope online. At the same time, the trace laboratory staff found a lipstick in the grass near the bamboo path in the research park and entered it into the physical evidence room. Under the interrogation of the police, Zhu finally admitted the facts of the crime.

Breakthrough point of the case: using identity dress as an alibi; Motive.

1. Cause of death: According to the autopsy report, there were multiple fractures of the neck, punctate hemorrhage of conjunctiva, a small amount of hemorrhage of interlobular fissure of both lungs, no rupture of lifeless surface and no carbon powder in the stomach, so it can be judged that the deceased was burned after mechanical asphyxia.

2. Time of corpse burning: According to the monitoring clues of the institute, it can be concluded that both Lu and Wu stayed in Building 1 1 when they left; After the second entry and exit, when Zhu cleaned up and left, Wu remained in Building 1 1; After Wu left, Bai Helu entered the 1 1 building. According to the monitoring and confession, Bai was on the scene when Wu left.

3. Relationship of corpse burning: According to the clues and social relations of suspects, the possibility that Wang and Zhu commit crimes together or others cooperate to clean up Zhu is ruled out.

According to the time when Wu and Bai met at the door and the body was found, Wu's suspicion of burning the body can be ruled out.

Wang+Wu: According to the clue, Wu is interested in Wu, but not in Wu. However, through Wu's clue, Wu stole new drugs and contacted the headhunter, which can rule out the possibility of two people joining hands.

Bai+Wu: Bai and Wu have no interest, just know each other. At the same time, Bai, as a paranoid personality, is difficult to cooperate with others to kill people. According to the monitoring clues, after the white arrived. If he was an accomplice, Wu should have killed him. According to the clue, Bai has a heart for the dead, and he also implemented a plan to put potassium cyanide in the mouth of the cup. In this case, if he committed a crime for two people, it should be a premeditated crime. White does not need to be decorated with potassium cyanide. According to his chat record, Bai didn't know the itinerary. According to the wedding ring, roses and chat records, it can be confirmed that Bai Qiu originally planned to propose to Lu today, that is, it was not premeditated murder, so it can reduce the possibility of her burning the body as an accomplice.

Bai+Wang: There is no relevant interest. There is no possibility of hiring a murderer.

Crime scene:

1. According to the surrounding environment of the crime scene, it can be determined that there are a large number of monitoring blind spots outside the research institute in the park. The window of the crime scene can only be opened from the inside, which directly ruled out the possibility that the murderer bypassed the monitoring from the outside and entered the institute through the window;

2. Combined with the fabric on the window frame and the closed but unlocked state of the window, it can be inferred that the murderer left the laboratory through the window and closed the window from the outside;

Nothing was lost in the lab, but the murderer brought something for combustion-supporting materials.

According to the above information, combing the clues of the suspects again, we can draw the following conclusions:

1. Bai: Potassium cyanide was detected at the edge of the deceased's water cup at the scene, but the inside of the water cup was dry without finger marks, indicating that the water cup was not used for drinking water for a short time. According to the monitoring clues, if he died of poisoning, it should be after going in. If so, Bai has no chance to burn the body. Through the above summary, there is no possibility of cooperation between combustion engines. Combined with the contents of the autopsy report of the deceased, it can be judged that the deceased did not drink the poison, but died of mechanical suffocation caused by strangulation or strangulation. Because potassium cyanide is a white spherical block, granular or crystalline powder in normal state, it can be concluded that Baiben is the poisoner corresponding to the unmarked white powder in Baijia. Therefore, it can be concluded that Bai is an attempted murder.

According to the suspect's chat record, the deceased once again deceived Bai for reasons such as going to his girlfriend's house, but actually met with friends of the opposite sex; The special date, the ring box at home and the scattered rose petals all point to Bai's intention to propose marriage that day, so Bai has the motive to kill. However, according to the chat record schedule, Yuan Qiu received the information on 18: 17 that night, and combined with his behavior of not destroying the poison at home, it can be inferred that Bai is a passionate murderer. The scene shows that the deceased was burned after being killed, and the murderer used monitoring, burning and other methods to eliminate a large number of criminal traces, which is a manifestation of premeditated murder. At the same time, if Bai strangled the deceased with a ribbon, he could completely destroy the ribbon instead of taking it home to increase the suspicion, so the possibility of committing a crime in vain was ruled out.

2. Wang Jiaming: According to my colleague's confession, Wang Jiaming had a quarrel with the deceased that afternoon; Chat records show that Wang Jiaming has something in the hands of the deceased. According to the description of the deceased in the chat record, the secret is likely to lead to the closure of the institute; On the other hand, according to the clue, Wang Jiaming is in urgent need of money because his family is ill. Therefore, it can be speculated that Wang Jiaming killed the deceased in order to keep the institute and maintain the financial resources of his family for medical treatment.

Wang Jiaming's alleged crime was that sevoflurane inhaled in his personal belongings was an anesthetic, and he returned to the scene to look for the strange behavior of the deceased and the words in his diary. However, according to oral clues, the recent study of all new cooperation projects is an important juncture for the development of the institute; He can achieve his goal by making the dead shut up forever, but there is no reason to choose to attack the dead, or even burn the body in his own research institute, which will damage the interests of his research institute and conflict with his motives, and there will be a second person when the body can be burned at the scene. As a result, Wang Jiaming's suspicions have diminished.

3. Wu: After identification, the person painted by Wu Jiazhong is. Combined with the lyrics behind this painting, it can be inferred that Wu is interested in it. Wu's chat record with the deceased and Wu's own confession all show that Wu has strong dissatisfaction with the deceased. And the chat records of Wu and headhunters and ldquo described by the cleaner; The suspicious behavior of swinging rdquo from side to side increased Wu's criminal suspicion. However, according to the time, Wu did not burn the body before Bai arrived and left after cleaning up, so Wu was initially ruled out.

According to the new drugs lost in the on-site freezer and the ice cubes in Wu's thermos cup, it is inferred that Wu stole the new drugs on the day of the crime and temporarily stored them in the thermos cup and ice cubes.

3. Possibility of delay device: There are two possibilities for a small amount of glass fragments beside the body: the murderer entered the scene and left this trace or left this trace through the delay device.

Assuming that the murderer committed the crime through a delay device, it can be concluded that Zhu and Wu had no reason to set up a delay device when they learned that the second person was present, otherwise they would probably be discovered by others. However, Bai Qiu's principle was killed after receiving the information that night 18: 17, so there was not enough time to prepare the delay device, so the possibility of using the delay device was ruled out.

According to the monitoring records, after excluding the possibility of multi-person committing crimes and delay devices, it can be concluded that the ldquo Lu rdquo who finally entered the monitoring is not the victim himself. According to the clues of height and weight, the height of the deceased is only the same as that of Wu and Zhu, and it is difficult to confirm the body shape because of bloated clothes in winter.

According to the monitoring records and autopsy reports, there are three kinds of conjectures about the time of death, namely, the first one, the deceased who appeared in the monitoring twice were really dead, the second one was really dead for the first time, the second one was suspended animation, and the third one was suspended animation twice.

The first type: cremation after death, without delay device, can be ruled out directly.

The third type: if both are false, there is no need to go out and repeat the crime. It can only increase the suspect's suspicion, but can't get rid of it, so it can be ruled out.

That is, there is only the second possibility.

At the same time, suppose Wu entered the scene pretending to be the deceased at 19: 05, only 25 minutes before the security guard heard the smoke alarm. Even if Wu has a lighter in her belongings, she still needs a lot of combustion-supporting articles to destroy the crime tools and the bodies of the dead in a limited time. According to the clues at the scene, the laboratory did not lose any other items, and Wu himself did not carry any combustion-supporting items, which helped to rule out Wu's clues.

After excluding other suspects, we can lock the murderer in this case as cleaner Zhu. According to the conclusion that the murderer returned to the scene disguised as the deceased, the murderer must have two sets of his own clothes, leaving one set at the scene for backup; At the same time, the appearance of the murderer should be as close as possible to the deceased. According to the clues of police investigation, Zhu has two sets of work clothes in her workshop; At the same time, the neighbor's confession mentioned that Zhu had an abnormal perm on her hair, which both pointed to Zhu's possibility of satisfying the identity change. There is disinfectant alcohol in Zhu's workshop as a combustion-supporting material, and there are matches in her work clothes to burn her body.

Judging from the motive of killing, although Zhu claimed that he had no deep hatred with the deceased, comparing the time when the deceased arrived at the institute in Wu's chat record with the time when Zhu confessed to being a cleaner in the park, we can draw the conclusion that the two times are basically the same. It can be inferred from the proof materials of Zhu's daughter from home to junior high school that her daughter was studying in junior high school before her death, and the deceased was dismissed as an experimental teacher in junior high school in her resume. Therefore, it can be considered that the deceased had contact with Zhu's daughter during his tenure as a junior high school teacher, which became Zhu's motive for killing. According to the habit of the deceased who likes to live in a circle of friends and the time when Zhu applied for a cleaner, we can further determine the possibility that Zhu deliberately sought revenge for the deceased because of his daughter.

According to the trace analysis of the scene, a large amount of carbon ash around the body is extremely abnormal, so it can be inferred that unknown objects were burned with the body. At the same time, it can be inferred from the strange dust wiping traces in the cupboard under the fume hood combined with the residual hair in the cupboard that the traces there are most likely left by the murderer in the process of hiding and moving the body.

Case restoration:

Bai and Lu have known each other since college, and often hang photos of Lu at home to record the dribs and drabs between them. By chance, I gave an umbrella to Lu for nothing. Lu went to his girlfriend's house, only to find that Lu was not at his girlfriend's house at all, but went to see other friends of the opposite sex. After that, the two have been arguing repeatedly because of this matter.

On the day of the crime, when Bai found himself betrayed again, the accumulated torture made him lose his mind instantly. After writing down his angry words in his diary and tearing off the photos of his lover, he has been engaged in the chemical industry and found out the potassium cyanide stored in his home. He went into Lu's office and secretly drew it on her cup, so that when Lu came back to drink water, he would be poisoned. But when Bai got home after everything, he still felt like a knife. So he took out sleeping pills and wine and planned to paralyze himself forever. Wu Lai has been in the office for many years, but the incompetent Lu soon became her immediate boss and often blamed her for problems. Not only that, the frequent exchanges between Lu and Yu made them begin to suspect that they had an improper relationship. All along, devotion, support and feelings have been betrayed sooner or later, and Wu hates it; She angrily tore up her beloved Lu's paintings and photos and decided to go back with betrayal.

The news of headhunting is the recruiter of another research institute; Wu used the latest medicines and core technologies of the Institute as an exchange, and applied for the technical researcher of the other side in order to get back the Institute. On the day of the incident, Wu has been observing the situation around the institute. After colleagues and cleaners left, he entered the laboratory to steal the latest drugs and stored them in a thermos cup, and hurriedly left to meet the staff of the new institute.

Wang Jiaming has been praised for his self-improvement because of his excellent grades since he was a child. After graduation, he started his business with enthusiasm but failed all the time; Coincidentally, he stole a student's research results, settled the students with money, but used this patent to put the institute on the right track. Who knows that the person who joined the company later has mastered the evidence of his past mistakes and used this condition to ask for a promotion. But in the past year, Lu's performance was completely unqualified for the job of a formal researcher. I discussed with Lu many times in the office, but I was threatened again and again.

On the afternoon of the incident, there was an argument with, but he happened to know the whereabouts of the evidence from there. He quickly formed a plan in his mind, so he softened his attitude and proposed to meet Lu in the institute 18: 15. After returning home, he prepared an inhalation anesthetic and handkerchief to return to the institute, and then planned to take it away from the institute. At that time, he planned to forcibly cover his nose with a handkerchief sprayed with anesthetic, so that he lost consciousness, and then found evidence to destroy after losing consciousness. However, when I arrived at the crime scene in time, I was told that I had left. He looked around, but found no trace. At the same time, because Liu didn't have a cupboard that couldn't be opened with a key, he had to leave angrily.

Zhu was abandoned by her husband in her early years, so she devoted all her love and hard work to her daughter. Fortunately, however, Zhu's daughter suffered a laboratory accident in junior high school. The cause of the accident was that the daughter and classmates accidentally touched the alcohol lamp in the experiment, which caused Zhu's daughter's thigh and abdomen to be severely burned. When the accident happened, the teacher who taught the experimental class panicked himself. Not only did he fail to deal with the accident in time, but he also provided wrong guidance, which made the burn worse. After learning the truth from her daughter, Zhu has been trying every means to get justice for her daughter, but there is no result; My daughter committed suicide by jumping off a building because of severe burns and mental breakdown.

Under the great blow of Zhu, he became paranoid and crazy; She blamed all the mistakes on the teacher. Mdash Lu. Lu, who lives in a circle of friends without remorse, even stimulated her, so she began a year-long revenge plan.

A year ago, Zhu successfully applied for the position of cleaner, and carefully used his professional advantages to observe the institute and the surrounding environment. During his tenure, Zhu tried to control his emotions, but he still quarreled with the deceased because of trivial matters. Three days before the incident, Zhu bought alcohol lamps and isoflurane through illegal channels online, and made a hairstyle similar to that of the deceased, which was tied up as a disguise on the day of the incident.

On the day of the murder, Wang Jiaming met with the deceased at the Institute 18: 15, and then returned home at 17: 30 to get anesthetic and other items to prepare his plan. 17: 50 The deceased walked out of the research institute and took a remote path to buy dinner as usual; On the other hand, Zhu put her own work clothes on the cleaning car in advance and left them near the path. She soaked the whole handkerchief with isoflurane in advance, followed the deceased to the depths of the path, and covered his nose with a handkerchief from behind until the deceased stopped struggling. In the process, Zhu strangled the unconscious dead with hemp rope. After undressing the deceased, Zhu hid the body and undressed clothes in the black garbage bag of the cleaning car and entered the institute at 18:00. During the appointment, Zhu and others left the laboratory and put the body, the alcohol vat for disinfection, the alcohol lamp, the shoe cover and another set of work clothes in the cupboard under the fume hood. In the process, due to the narrow space, the neck of the deceased was broken many times. Then Zhu pretended to have cleaned up and left the scene with the clothes of the deceased. After Zhu left, Wu stole the medicine and met Bai who came to poison at the door when he left; Zhu temporarily parked the cleaning car near the bamboo forest. After observing that both Wu and Bai had left, she put on the clothes of the deceased, put down her hair and put on gloves to enter the institute. Because he had to wear a mask to enter the company, Zhu took advantage of this and pretended to be the dead and re-entered the scene. After entering, Zhu took off her clothes, dragged out the body of the deceased, and filled it with alcohol together with other crime tools. After lighting it with a match, she smashed the alcohol lamp on the burning body. Later, she put on her work clothes in the cupboard, escaped from the window with gloves and shoes, and closed the window from the outside. She designed all these traps with monitoring, just to use ldquo to surprise mdashmdash, which is the most ironic sentence for her, and she also gave the deceased a memorial to her daughter's death.

Conclusion:

The ancients said that the lofty morality of ldquo bears the burden of rdquo, especially the teacher. Lu, whether as an employee or a teacher, did not fulfill his due responsibilities. He was not responsible or even reflective of his own actions, but blindly looked for other people's faults. The lack of introspection and sense of responsibility has become the beginning of all tragedies. As a victim, Zhu should seek legal and other appropriate ways to help her daughter instead of becoming the next abuser. Mdash because this will only lead to Zhu's more culture. As the boss of the institute, it is extremely undesirable for Wang Jiaming to steal other people's intellectual property rights. As people, we should also actively protect the intellectual property rights of ourselves and others. Bai, who tried to commit suicide, was originally the victim of lies, misunderstandings and other injuries in her feelings, but she desperately chose to repay others with injuries under the impulse, but in the end she could only hurt herself more deeply. Finally, Wu's choice of betrayal in the case of various legitimate choices will also be punished by corresponding laws, because he used the company's internal information for commercial purposes and provided it to competitors, which seriously violated the employee contract.

Small science:

Passion killing refers to killing others without any intentional motive, but under the stimulation and teasing of the victim, they lose their senses and control. Passion killing is also intentional killing, but subjectively, due to the influence of emotion, it leads to the limitation of understanding and the weakening of control over behavior, and the lack of necessary consideration of the nature and consequences of behavior, leading to sudden crime. Different from premeditated intentional crime, the perpetrator has no long-term criminal premeditation, no predetermined criminal motive and no predetermined criminal purpose. Subjective malignancy is not as good as premeditated intentional crime.

The difference between burning to death and burning a corpse after death:

You can find charcoal powder by burning your stomach before you die. The deeper the soot deposit, the more it can be proved that it was inhaled before death. Burning after death, charcoal powder will only be in the nose, not in the stomach. Because the charred surface of the corpse is different, it is difficult to judge by the naked eye, so the pathological forensic doctor will dissect, take trachea and lung slices, observe them under the instrument and judge the cause of death.

Heart of the King 2 Click on the demo.