Criminal Investigation: Forbidden Rose

The Legal Forensic Center connected to the teleconference.

Yu Min said that they used Xu's oven to conduct experiments again, and the ingredients were pork belly from their forensic refrigerator.

Xia Yi was still drowsy at first, but now he suddenly woke up: "I'm sorry, just interrupt! Why is there pork belly in the refrigerator of your forensic clinic? Is it pork belly or... pork belly??" Said He said, his eyes full of suspicion: "So, where did your assistant feed me the fried pork belly with green peppers last time???"

Shao Lin: "..."

"Shut up!" Jiang Mo turned her head and cursed, "It doesn't matter, don't interrupt!"

Xia Yi thought carefully and swallowed many small question marks in one gulp: "..."

Yan Jingjing leaned into his ear and whispered: "Team leader, didn't the seniors of the Criminal Court remind you not to eat the food in the forensic refrigerator anyway? Even if they tempt you with Haagen-Dazs ice cream, no, okay!"

Xia Yi whispered through his teeth: "I didn't graduate from the Criminal Court..."

"Director Yu," Jiang Mo frowned slightly, looking at Yu Min intently, "Don't bother with this stupid dog, please continue."

Yu Min said that they divided the pork belly slices into two groups, one group used charcoal grill mode, the other group used electric grill mode, controlled the grilling time, grilled the meat of both groups until crispy and golden, and then tested the level of benzopyrene in the food. Content - Benzopyrene is a condensed ring aromatic hydrocarbon produced by oil at high temperature, which is very common in barbecue.

Due to time constraints, they did not run high-performance liquid chromatography for the time being, but used the simplest fluorescence analysis method: extract the benzopyrene in the sample with an organic solvent, and separate it on acetylated filter paper after purification of the chromatographic column.Because benzopyrene will show blue-purple fluorescence under the irradiation of ultraviolet rays, the concentration of benzopyrene can be determined by comparing the intensity of fluorescence.

The results showed that the benzopyrene content of the charcoal-grilled pork belly was more than ten times that of the electric-grilled pork belly! [1]

This phenomenon is also easy to explain: the temperature of the electric grill can be automatically adjusted, such as according to the recommendation in the manual, it is 200 degrees Celsius, and will not exceed 230.When grilling with charcoal, there will be an open flame, and the temperature is difficult to control, and it can go to 3-400 degrees Celsius.The higher the temperature, the faster the rate of benzopyrene production, so the benzopyrene in charcoal barbecue will be much higher than that in electric barbecue.

On the basis of this experiment, they tested the benzopyrene in the stomach content of the deceased again, but found that its content was very low.The forensic team has not had time to do specific quantitative work, but according to qualitative experiments, it can be confirmed that the three members of the Xu family did not eat bamboo charcoal barbecue at all. On the day of the accident, they ate indoors, which was the same electric grill as before!

In this way, Xu Heguang's "taken" photos of Ji Tong, and the subsequent "charcoal grilling" scene, are all set up by the murderer!

Yu Min concluded: "So, it can be inferred that when Xu Heguang took a 'photograph' of Ji Tong at 7:34 that night, the family had already taken sleeping pills and fell asleep. After the posing, the murderer closed the doors and windows and rearranged the scene , and let three people sleep for several hours in a space with a charcoal fire, and finally formed the result we saw."

At present, many speculations of the police are based on the photo Xu Heguang sent to Ji Tong.For example, at 7:34 on a Saturday night, the meal has just started, and the family may not start eating until around 7:34.However, it now appears that at 5:30, not only was the dinner over, but the murderer had already finished setting up the scene.Therefore, the start time of the meal has to go far ahead, around [-]:[-]PM.

At the same time, this also changed Xu Huayu's alibi. [*]

At 8:15pm on the night of the incident, Yan'an Airport confirmed that Xu Huayu had checked in and took the 11:15pm flight to the destination for a business trip.At that time, based on the photos, the police determined that nothing happened to the Xu family at 7:34 PM, and the time of taking the hypnotic was between 8 and 9 PM, so the possibility of Xu Huayu being present was ruled out.

But now it seems that assuming that sending the photo was the murderer's "last step", he left the scene at 7:40PM and arrived at the registration counter at 8:15PM just in time.After all, Huajin Villa in Xicheng is not far from Yan'an Airport, directly connected to the expressway, only half an hour's drive away.

During the investigation, although Xu Huayu said that he cooperated verbally and that the police would answer every call, he was not in Yan'an after all, and he was missing a lot of information that could only be discovered through face-to-face communication.

Now, Xu Huayu's suspicion suddenly escalated.

With the latest clues from the Jurisprudence Center, each team headed up the report and completed the qualitative task of the case in time by stepping on the 48-hour deadline given above.

It has been two days since the body was discovered at noon on Sunday, and most of the police officers sleep no more than five hours.Jiang Mo temporarily let everyone go back to take a bath, eat and catch up on sleep. After all, the next work is another tough battle.

In the office, everyone was praising Yu Min, such as "Gold-plated in foreign countries", "As expected of being the youngest chief forensic doctor of the Forensic Inspection Center", but Xia Yi quietly stopped Shao Lin in the corridor: " Did you know there was something wrong with that photo?"

Shao Lin blinked innocently: "I don't know."

Xia Yi didn't buy it: "But I saw it with my own eyes. You brought a bunch of delicious and delicious food to confuse everyone, pretended to run errands for me, but took the opportunity to remind Yu Min. Otherwise, he would never have thought of this."

Shao Lin keenly caught a little temper in his tone.He thought to himself: Could it be that Xia Yi is dissatisfied that he "gives up" this opportunity to "make meritorious service" to Yu Min?However, Xia Yi doesn't look like such a narrow-minded person?

Facts have proved that Xia Yi is really not.

He's just a silly dog.

I saw someone in Xia pouted aggrievedly: "You would rather remind people you don't know well than tell me. You just think I'm stupid and don't bother to tell me."

Shao Lin: "........." Where is this?

He took a deep breath, showed a caring smile on his face, hooked his fingers at Xia Yi, and led them into a small meeting room.

"At that time, I didn't know if there was anything wrong with that photo." Shao Lin patiently explained to others, "I just had some guesses, and it just so happened that only Director Yu could give me the answer."

"Then how did you guess that?"

"Several doubts. First, Zhao Chunhua said that the Xu family spent a lot of money to buy an oven from South Korea 'in order to eat barbecue healthier'. Although it is a dual-purpose oven, Zhao Chunhua said that if the Xu family wants to eat barbecue Charcoal grilling, usually go to the store. So, I really don't understand, who suggested charcoal grilling? How did this person persuade everyone not to go to the store?"

Shao Lin paused, took out his mobile phone, and clicked on the photo Xu Heguang sent to Ji Tong: "Also, look at this photo again. The charcoal fire is so full and prosperous, but the charcoal ash around it is very white. Not much. In the photo, there are food residues in the bowls of the three people, and the tips of the chopsticks are stained with sauce, indicating that this is not the first round of roasting, but why is there only such a little bit of charcoal?"

"In addition, look at the distribution of seafood in this picture. On the side of the grill closest to Xu Huahao, there is a neat row of garlic lobster tails. Compared with the food leftovers on the scene, you will find that the lobster shells are almost It's all in Xu Heguang's bowl, but Xu Huahao didn't eat any of it. This is very strange, if only Xu Heguang likes to eat lobster tails in this family, shouldn't all the lobster tails be placed in front of Xu Heguang under normal circumstances?"

Xia Yi listened carefully, her eyes were shining, and she looked at Shao Lin with clear and focused eyes.Under such gazes, Shao Lin couldn't help explaining a little more: "You think, when grilling, everyone usually picks their favorite food and puts it on the grill closest to them, doesn't it? But the seafood is really good. Neat, I, a person with obsessive-compulsive disorder, look comfortable."

"Of course, these are just the details that make me feel inconsistent, and there may be countless explanations for each point." In the end, Shao Lin came to a conclusion, "It's just that there is one explanation that can answer all the questions—that is, the Xu family They didn’t eat charcoal grills. So, I just want to find evidence that they didn’t eat charcoal grills. Before Director Yu makes the results, I can’t be sure that this photo was staged.”

Xia Yi suddenly realized "Oh", and still looked at him with such admiration and sincerity: "Mr. Shao, why are you so good!"

When Shao Lin heard this, the tails of his eyes slightly curved, but the corners of his mouth remained straight.In the end, he looked away uncomfortably, panicking with embarrassment all over his body.

But Xia Yi suddenly said: "Laugh if you want, why are you holding back?"

Shao Lin's face suddenly tensed up: "Who wants to laugh?"

"Every time I praise you for being smart, you want to laugh, but then you feel embarrassed." Xia Yi grinned her white teeth, as if it was a very funny thing, "So I will praise you more and let you laugh." Smile more."

Shao Lin: "..."

He had seen Xia Yi's expression before—it was the same expression when Xia found out that the little yellow duck would "quack" when squeezed.

Shao Lin seemed to have been touched by an untouchable tail suddenly, with a expressionless face, he got up, pushed the door and left.

……

The official immediately issued a notice with white letters on a blue background, declaring the carbon monoxide poisoning of the three members of the Xu family as a criminal case, causing an uproar on the Internet again.

But on the night when the announcement was made, the Luhuawan Police Station received an anonymous report letter from the Luhuawan Nursing Home, which was related to the case of the Xu family. The police station immediately forwarded the report letter to the Western District Bureau.

The whistleblower claimed to be a nurse in a nursing home and a former colleague of Zhao Chunhua.She said that because Zhao Chunhua didn't want to take care of some temperamental old people, she would steal "Sukemian" from the nursing home and give them to the old people. After the old people fell asleep, she would watch TV by herself.Later, Zhao Chunhua left, but there was still a small circle of "reselling" Sukemian to each other.This report was made because it was rumored recently that the person Zhao Chunhua served had died.

This report letter has been highly valued by the Western District Bureau, because the main ingredient of Sucomian is secobarbital.

The author has something to say:

Xia Yi: Today is also a happy dog√

[1]信维平."苯并芘的致癌性及快速检测."?肉品卫生?000.002(2000):16-17.

[*]Patch: I saved the version in the manuscript box. When I wrote it, I didn’t calculate Xu Huayu’s time difference.I only found out here today after repairing it, and I will change it later.Excuse me!Don't shake the manuscript box, it's about to fall out like my lion's fur.