crimaster crime master deadly tongue answers

Crime Master Deadly Flame is a recent case. The Shanghai police received a report from a security guard at a science and technology park. The reporter claimed that an employee of a research institute in the science and technology park died in the laboratory. The police immediately went to the scene and sealed off the scene; after investigation, the police have identified four suspects. Below we will bring you the strategies related to the answers to crimaster's deadly tongue of fire. Interested players should take a look together!

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Answer analysis

Case introduction

January 8, 2021 19 : 35, Shanghai police received a report from a security guard at a science and technology park. The reporter claimed that an employee of a research institute in the science and technology park died in the laboratory. The police immediately went to the scene and sealed off the scene; after investigation, the police have identified four suspects. Due to the egregious nature of this case, the police have now chosen to make the clues public and hope that detectives from around the world will assist in the investigation.

Deceased: Lu Yiran

Suspects: Wang Jiaming (boss), Bai Qiuyuan (boyfriend), Wu Xinchen (colleague), Zhu Lingfang (cleaning)

Murderer: Zhu Lingfang (cleaning)

Answer analysis:

At 20:00 pm on January 9, a comparison report came from the root laboratory department. It was confirmed that the hair in the fume hood matched the DNA of the deceased. The police immediately found that the fibers on Zhu Lingfang's window frame matched the material of cleaner Zhu Lingfang's work clothes; they conducted an in-depth investigation on the scene. According to the retrieved online consumption records and logistics company delivery records, Zhu Lingfang recently purchased alcohol lamps, rubber gloves, isoflurane, hemp rope and other items online. At the same time, personnel from the Trace Inspection Section found a lipstick in the grass near the bamboo forest path in the park where the institute is located and entered it into the evidence room. Under police interrogation, Zhu Lingfang finally admitted the crime.

The breakthrough point of the case: using identity disguise as alibi; motive for committing the crime.

1. Cause of death: According to the autopsy report, there were multiple fractures in the neck, punctate hemorrhage of the conjunctival membrane of the eyes, small patchy hemorrhage visible in the interlobar fissures of both lungs, body surface rupture with no response to life, and no carbon in the stomach. Based on the final performance, it can be determined that the deceased died of mechanical asphyxiation and was then burned.

2. Time point of corpse burning: According to the monitoring clues of the institute, it can be seen that when Wang Jiaming left, Lu Yiran and Wu Xinchen stayed in Building 11; after Wang Jiaming entered and left for the second time, Zhu Lingfang cleaned up and left. Wu Xinchen still stayed in Building 11; after Wu Xinchen left, Bai Qiuyuan and Lu Yiran entered the 11th floor. According to surveillance and oral confessions, it can be proved that Bai Qiuyuan was at the scene when Wu Xinchen left.

3. Relationship between corpse burning (possibility of cooperation): Based on the clues of the suspects and social relations, it can be ruled out that Wang and Zhu jointly cooperated in the crime (no relevant interests, etc.), or the others cooperated with the cleaner Zhu Lingfang possibility (the murderer would not find an unknown person as an accomplice, and according to the clues, there is no possibility that Zhu Lingfang was hired).

Based on the meeting between Wu and Bai at the door and the time when the body was found, the suspicion of Wu Xinchen burning the body can be ruled out (according to the clues, Bai Wei went to find Lu. If Wu Xinchen burned the body alone, Bai Qiuyuan would Discover).

Wang Wu: According to clues, we know that Wu Xinchen is interested in Wang Jiaming, but Wang Jiaming is not interested in Wu Xinchen. And through Wu Xinchen’s clues, we know that Wu Xinchen stole new drugs and contacted a headhunter. This can rule out the possibility of the two joining forces (if the two If people cooperate in the case, Wang will not harm his own interests)

Bai Wu: Bai Qiuyuan and Wu Xinchen have no relevant interest relationship. It is only known that the two are acquaintances. At the same time, Bai Qiuyuan has a paranoid personality and it is difficult to cooperate with others. kill. According to surveillance clues, Bai Qiuyuan arrived later. If he was an accomplice, Wu Xinchen should have killed the person (or stunned Lu Yiran), and Bai Qiuyuan burned the body (or killed and burned the body). According to the clues, Bai Qiuyuan had murderous intentions for the deceased. , and he also carried out the plan of placing potassium cyanide at the mouth of the cup. In this case, if the crime was committed by two people, it should be a premeditated crime. Bai Qiuyuan did not need to arrange potassium cyanide. According to his chat records, Bai Qiuyuan did not know Lu Yiran's itinerary, so he could help eliminate clues.

According to the wedding ring, roses, and chat records, it can be determined that Bai Qiu originally planned to propose to Lu Yiran today, which means that he did not premeditate the murder, so it can reduce the possibility of him being an accomplice to burn the body.

Bai Wang: The two have no relevant interests. And there is no possibility of hiring a murderer to kill someone.

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 self-research institute in the park. The window at the crime scene can only be opened from the inside, which directly excludes the possibility of the murderer bypassing the surveillance system from the outside and entering the institute through the window;

2. Combined with the clothing fibers on the window frame and the fact that the window is closed but not locked It can be inferred that the murderer left the laboratory through the window and closed the window from the outside;

3. No items were lost in the laboratory and the murderer brought his own items as combustion aids.

Based on the above information, the following conclusions can be drawn by combing through the clues of the suspects again:

1. Bai Qiuyuan: Potassium cyanide was detected on the edge of the water glass of the deceased at the scene, and the inside of the water glass was dry. And there are no fingerprints, indicating that the water cup has not been used for drinking water in a short period of time. According to the surveillance clues, if he died of poisoning, it should be when Lu Yiran entered again (19:05) after Bai Qiuyuan entered (18:40). If so, Bai had no chance to burn the body. Based on the above summary, there was no cooperation in burning the body. Corpse possible. Combined with the content of the autopsy report of the deceased, it can be judged that the deceased did not drink poison but died of mechanical asphyxiation due to strangulation or strangulation, because potassium cyanide appears as a white spherical hard lump, granular or crystalline powder under normal conditions, corresponding to Baiqiu. The unlabeled white powder in the original document indicates that Bai Qiu was the poisoner. Therefore, Bai Qiuyuan attempted murder.

According to the suspect’s chat records, the deceased deceived Bai Qiuyuan again for reasons such as going to his best friend’s house, but in fact he was meeting friends of the opposite sex; and the special date, the ring box at home and the scattered rose petals all pointed to Bai Qiuyuan Bai Qiuyuan wanted to propose marriage on the same day, so Bai Qiuyuan had the motive to kill. However, the chat record timetable shows that Qiuyuan received the message at 18:17 that night. Combined with his behavior of not destroying the poison in his home, it can be inferred that Bai Qiuyuan committed a passionate murder; and the situation at the scene showed that the deceased was burned after being killed, and the murderer used surveillance and burning The method used to eliminate a large number of traces of the crime is a sign of premeditated murder. At the same time, if Bai Qiuyuan strangled the deceased with a ribbon, he could have destroyed the ribbon instead of taking it home to increase his suspicion, so the possibility of Bai Qiuyuan committing the crime was ruled out.

2. Wang Jiaming: According to the testimony of his colleagues, Wang Jiaming and the deceased had a quarrel that afternoon; the chat records show that Wang Jiaming has something in the hands of the deceased. According to the description of the deceased in the chat records, the secret is likely to lead to the collapse of the institute; on the other hand, clues show that Wang Jiaming is in urgent need of money because his family is ill. Therefore, it can be speculated that Wang Jiaming's murderous intention was to kill the deceased in order to save the research institute and maintain the financial resources for medical treatment for his family.

Wang Jiaming’s suspicion of committing the crime was that the inhaled sevoflurane in his belongings was an anesthetic, as well as his strange behavior of returning to the scene to look for the deceased and the words in his diary. However, according to clues from the confession, the institute has recently launched a new cooperation project, which is an important juncture in the development of the institute. He can achieve his goal by silencing the deceased forever, but he has no reason to choose to commit murder or even burn the corpse in his institute. It would cause harm to the interests of his research institute, conflict with his motives, and a second person would be present at the time when he could burn the body. Therefore, Wang Jiaming's suspicion dropped.

3. Wu Xinchen: After identification, the man in the painting at Wu Xinchen’s home is Wang Jiaming. Based on the lyrics behind the painting, it can be inferred that Wu Xinchen is interested in Wang Jiaming. Wu Xinchen's chat records with the deceased and Wu Xinchen's own confession showed that Wu Xinchen was strongly dissatisfied with the deceased; Wu Xinchen's chat records with the headhunter and the suspicious behavior described by the cleaner increased Wu Xinchen's criminal suspicion. However, judging from the time, there is no possibility that Wu Xinchen burned the body after the cleaner left before Bai Qiuyuan arrived (it is easier to find and the alarm should be triggered), so Wu Xinchen was preliminarily ruled out.

Based on the new drugs lost in the refrigerator at the scene and the ice cubes in Wu Xinchen’s thermos cup, it is inferred that Wu Xinchen stole the new drugs on the day of the incident and used the thermos cup and ice cubes to temporarily store them (because the drugs needed to be stored It was refrigerated in a refrigerator and other suspects did not have the tools to commit theft).

3. The possibility of a time-delay device: There are two possibilities for the small amount of glass fragments next to the body: the murderer entered the scene and left such traces, or the murderer left such traces through a time-delay device.

Assuming that the murderer used a delay device to commit the murder, it can be concluded that Wang Jiaming, Zhu Lingfang and Wu Xinchen did not have the reason to deploy the delay device when they learned that the second person was present, otherwise it would be very difficult to do so. It may be discovered by others; and Bai Qiuyuan only had murderous intention after receiving the message at 18:17 that night, and did not have enough time to prepare the delay device, so the possibility of using a delay device to commit the crime was ruled out.

According to the surveillance records, after ruling out the possibility of multiple persons committing the crime and the delay device, it can be concluded that the last person to enter surveillance was Lu Yiran, who was not the deceased himself. According to clues about height and weight, only Wu Xinchen and Zhu Lingfang were the same height as the deceased. In winter, it was difficult to confirm the body shape due to bulky clothes.

Three speculations can be made based on the time of death in surveillance records and autopsy reports. The first is that the deceased who appeared on surveillance twice are all real deceased, and the second is that the first time is the real one. , the second time is false, and the third is false both times.

The first type: it can be eliminated directly by burning the corpse after death without a delay device.

The third type: If both times are false, there is no need to come out and go in again to commit the crime again. This can only increase the suspicion of the suspect, but cannot get rid of the suspicion, so it can be ruled out.

There is only the second possibility left.

At the same time, it is assumed that Wu Xinchen entered the scene pretending to be the deceased at 19:05, and it was only 25 minutes before the security guard heard the smoke alarm and entered the scene. Even if Wu Xinchen carried a lighter among her belongings, she still needed a large amount of combustion-supporting materials to destroy the crime tools and the body of the deceased within a limited time. According to on-site clues, no other items were lost in the laboratory, and Wu Xinchen himself did not carry any combustion-supporting items, which can be used as clues to help eliminate Wu Xinchen.

4. After eliminating other suspects, the murderer in this case can be identified as cleaner Zhu Lingfang. According to the conclusion that the murderer changed his clothes and pretended to be the deceased and returned to the scene, the murderer must have two sets of his own clothes and leave one set as a backup at the scene; at the same time, the appearance and characteristics of the murderer should be as similar as possible to the deceased. According to police investigation clues, Zhu Lingfang had two sets of work clothes in her workplace; at the same time, the neighbor's confession mentioned that Zhu Lingfang had permed her hair abnormally, both of which pointed to the possibility that Zhu Lingfang was satisfied with changing her identity. There is disinfectant alcohol in Zhu Lingfang's workshop that can be used as a combustion aid, and there are matches in her work clothes to burn the body.

From the perspective of the murder motive, although Zhu Lingfang claimed that she had no deep hatred for the deceased, two conclusions can be drawn by comparing the time when the deceased arrived at the research institute in Wu Xinchen’s chat record with the time when Zhu Lingfang worked as a cleaner in the park in her confession. The times are basically consistent. It can be inferred that the daughter of Zhu Lingfang's family attended junior high school with a certificate of merit. The deceased's resume showed that he was fired as a junior high school experimental teacher. Therefore, it can be assumed that the deceased had contact with Zhu Lingfang's daughter when he was working as a junior high school teacher, which became Zhu Lingfang's motive for the murder. Based on the deceased's habit of posting details about his life in his circle of friends and the time when Zhu Lingfang applied for the job as a cleaner, it can be further determined that Zhu Lingfang specifically sought revenge on the deceased because of her daughter.

According to the analysis of traces on the scene, the large amount of carbon ash around the body is extremely abnormal, and it can be speculated that unknown objects were burned together with the body (such as crime tools, etc.); at the same time, strange dust in the cabinet under the fume hood was removed. Combined with the traces of hair left in the cabinet, it can be inferred that the traces were most likely left by the murderer during the process of hiding and moving the body.

Case reconstruction:

Bai Qiuyuan and Lu Yiran have known each other since college and have been friends. They often hang photos of Lu Yiran in their home to record every moment between them. By chance, Bai Qiuyuan gave an umbrella to Lu Yiran who was visiting his best friend's house, only to find that Lu Yiran was not at her best friend's house at all, but had gone to meet other friends of the opposite sex. Since then, the two have been quarreling over this matter.

At 17:50, the deceased walked out of the institute and took a remote path to buy dinner as usual; Zhu Lingfang put her work clothes in the cleaning vehicle in advance and stood guard near the path. She soaked the entire handkerchief with isoflurane that had been carefully kept in advance, followed the deceased deeper into the path, and covered the deceased's nose with the handkerchief from behind until the deceased stopped struggling. During this process, Zhu Lingfang strangled the unconscious deceased with a hemp rope. After taking off the clothes of the deceased, Zhu Lingfang hid the body and the clothes in a black garbage bag in the cleaning truck and entered the institute at 18:00. During this period, Wang Jiaming came to attend the appointment. Zhu Lingfang waited for Wang Jiaming to leave the laboratory and put the body, the vat of alcohol for disinfection, the alcohol lamp, shoe covers and another set of her work clothes into the cabinet under the fume hood. Due to the small space during this process, , causing multiple fractures to the deceased’s neck. Zhu Lingfang then pretended to finish cleaning and left the scene with the deceased's clothes. After Zhu Lingfang left, Wu Xinchen stole the medicine and met Bai Qiuyuan at the door when he left. Zhu Lingfang temporarily parked the cleaning truck near the bamboo forest and observed that both Wu and Bai left, put on the clothes of the deceased and put them down. Hair put on gloves and entered the institute. Since you need to wear a mask to enter the company, Zhu Lingfang took advantage of this and pretended to be the deceased to re-enter the scene. After entering, Zhu Lingfang took off her clothes, dragged out the deceased's body and filled it with alcohol along with other crime tools. After lighting it with a match, she slammed the alcohol lamp on the burning body. She then put on the work clothes she had left in the closet, escaped from the window wearing gloves and shoe covers, and closed the window from the outside. She used surveillance to design all these traps, just to use the most ironic word to her, accident, to return the deceased to commemorate her daughter's death.

Conclusion:

The ancients said that virtue is a great virtue, and this is especially true for those who are teachers. Whether as an employee or a teacher, Lu Yiran failed to fulfill her responsibilities, let alone take responsibility or even reflect on her own actions. Instead, she blindly looked for the faults of others. The lack of self-reflection and responsibility has become the beginning of all tragedies. As a victim, Zhu Lingfang should seek legal and other legitimate means to help her daughter, rather than becoming the next perpetrator because this will only lead to more Zhu Lingfangs. As the boss of the research institute, Wang Jiaming’s behavior of stealing other people’s intellectual property rights is extremely undesirable; as a people, we should also actively protect our own and others’ intellectual property rights. Bai Qiuyuan, who attempted suicide, was a victim of lies, misunderstandings and other injuries in his relationship. However, he impulsively chose to repay others with harm regardless of the consequences, but in the end he only hurt himself more deeply. Finally, Wu Xinchen, who chose to betray when there were many legitimate choices, will also be subject to corresponding legal sanctions for seriously violating the employee contract by using the company's internal information for commercial and other purposes and providing it to competitors.

Quick science:

Passionate killing means that there is no intention to kill, but under the stimulation and provocation of the victim, he loses his mind, loses control and kills others. Passion killing is also intentional killing, but subjectively due to the influence of emotions, the limitation of understanding and the weakening of behavioral control, and the lack of necessary consideration for the nature and consequences of the behavior, resulting in sudden crimes. Different from premeditated intentional crimes, the perpetrator has no long-term criminal premeditation, no predetermined criminal motive, and no pre-selected criminal purpose. The subjective viciousness is not as good as premeditated intentional crimes.

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

You can find charcoal powder in the stomach of someone who was burned before death. The deeper the soot and carbon dust deposits, the more likely it is that they were inhaled before death. After death, the charcoal will only appear in the nose and not in the stomach. Because the charred condition of the corpse surface varies, it is difficult to judge with the naked eye, so forensic pathologists will conduct an autopsy, take sections of the trachea and lungs, and observe them under instruments to determine the cause of death. (The information comes from the Zhejiang Qianmai Forensic Identification Center, and the relevant case recommendation is the Criminal Investigation Brigade of Qujiang District Branch of the Shaoan City Public Security Bureau, "Identification Analysis of Premortal Burning and Posthumous Cremation in Forensic Medicine Identification")