Chapter 319: Possibility of Characteristic Serial Killings

Chapter 318 Tears of the Virgin

"Alkaloids plus sedatives..."

Chen Yi's voice sounded. Why this combination was chosen is a question worth thinking about.

There are still many poisons that can kill people in a short period of time, but the murderer chose to use the method of delayed killing. In order to succeed, he also added sedatives to let the victim die slowly in a coma.

It sounds a bit troublesome, and it is not to increase the pain of the victim.

Death in a coma is no different from euthanasia.

In this process, once the comatose victim is discovered, there is still a great possibility that he will escape.

"Have you thought of anything?" Fang Shuyu asked.

Chen Yi said: "Both victims had a chance to survive. It takes at least an hour from ingestion of toxins to death, but they were unlucky and were not discovered."

"The murderer used alkaloids to delay killing. It seems to me that... he did not have the intention to kill. What do you think?"

Fang Shuyu thought for a while and said: "I don't think so. You also saw the process of Li Yao's murder. The murderer moved her to a hidden alley after she lost consciousness, which greatly reduced her chance of being discovered."

"And this person, the place where he was unconscious was extremely dark and there was no light. Even if there were many guests going to the toilet there, it would be difficult to find a person lying on the ground with sight and drunkenness."

"So, it seems that there is a chance to survive, but in fact the chance is slim. The result explains everything. Both of them died."

Chen Yi did not refute, and nodded: "What you said makes sense. The result is indeed the most important. Both of them died."

"You go back and rest first, and then continue to investigate the source of alkaloids."

Fang Shuyu: "Okay."

Chen Yi did not leave, he was waiting for Zhuo Yun.

When Zhuo Yun also returned to the Municipal Bureau, he reported the results of the search around the crime scene, and found nothing like syringes.

It seems that the murderer did not throw it away, or handled it in a more secretive way.

It was 11 o'clock in the morning, and the investigation was proceeding at a normal pace.

The surrounding surveillance did not capture any suspicious persons, mainly because the location was too remote and the surveillance was scarce. Not to mention that it was easy to hide, even if you didn't deliberately avoid the probe, the chance of being photographed was not high.

By comparing fingerprints in the database, the identity of the deceased has been determined.

Zhang Su, 32 years old, an unmarried foreigner living alone, is a computer software engineer, commonly known as a programmer or coder.

"Foreigner, unmarried, living alone."

Chen Yi automatically screened the common points in his mind, but it was not known whether it was useful.

"Brother Yun, investigate Zhang Su's interpersonal relationships, check carefully, and focus on finding the intersection between him and Li Yao to determine whether the two people know each other, even if they have only met." Chen Yi gave the order.

Zhuo Yun: "Okay, I'll take someone there right away."

After Zhuo Yun left, Chen Yi came to the whiteboard, picked up a marker and wrote Zhang Su's name, connected it to Li Yao, and fixed the photo.

He Shixin came over: "Chen Yi, I checked the pendant, there are many similar ones on the Internet, and the hope of getting a breakthrough from the source of the pendant is not very great."

Chen Yi nodded slightly and said nothing. Since the whole nation has been shopping online, the source of items has become more and more difficult to check. The development of technology has both advantages and disadvantages, and it has also brought great convenience to criminals.

He Shixin and Chen Yi stood side by side, looking at the victims and the condensed clues on the whiteboard, it was very clear.

"Since it was done by the same person, then Li Yao and Zhang Su must know each other, but I don't know why they were killed."

He Shixin gave his own analysis.

"They are all from other places, unmarried and living alone. Captain Lu has checked Li Yao's interpersonal relationships and Zhang Su is not among them. Therefore, the two may have known each other because of their interests and hobbies, a small circle."

"What do you think?"

Chen Yi agreed: "It is possible that conflicts arose in a special small circle, triggering the murderer's murderous intention, but killing requires very sufficient reasons and courage. If it is just an acquaintance, it always feels a bit strange... By the way, tranquilizers."

"Lao He, if the tranquilizers are used by the murderer himself, can it be reasonably explained?"

He Shixin said: "I have also been thinking about this issue. The state stipulates that tranquilizers cannot be sold privately in pharmacies. If necessary, they must go to the hospital to get a prescription. Under normal circumstances, people who can have tranquilizers are either doctors or patients."

"Anyone who takes tranquilizers usually has anxiety, depression, mania, etc. Even symptoms of schizophrenia. From the analysis of criminal psychology, the crime rate of this group of people is relatively high compared to ordinary people, and they are easily stimulated. "

"A small matter for ordinary people may be a big matter for them. It is very likely that they will kill because of a word."

Chen Yi nodded: "Well, in my current criminal profile, I also tend to believe that the murderer has certain mental or psychological problems."

"Without further delay, Lao He, check all the hospitals in the city. He is 1.78 meters tall and male. You must be fast. Please work overtime for the next two days."

"So far, we don't know the connection between Li Yao and Zhang Su. If the murderer is a madman who is taking revenge on society, then we will be in big trouble and must find him as soon as possible."

He Shixin: "Okay."

The unknown is the most terrifying. Before finding out the relationship between Li Yao and Zhang Su, no one dared to swear that the murderer would kill a few people.

It was evening and the investigation was still going on.

In the office, Chen Yi sat in front of the computer, holding an evidence bag containing a pendant.

This was a light blue pendant that existed at both murder scenes. It was teardrop-shaped, and the technical department basically confirmed that it was brand new, without any signs of human wear and tear.

Why did the murderer leave this thing behind? I couldn't figure it out.

During the day, Chen Yi didn't tell everyone. Based on his experience in investigating cases in his two lives, it was necessary to suspect the possibility of serial murders when there were multiple crimes with symbols left at the scene. This meant that the blue pendant must have a unique meaning.

"Poison, tears."

Chen Yi typed on the keyboard to search for keywords, and found that all the results were irrelevant information such as [Are tears poisonous?] and [Why do people cry?].

He changed the keywords.

Alkaloids, tears.

Still no results.

He continued to change, and finally found something called weeping grass, but it was just a plant that feeds on insects and was not lethal. Even if it reacted with sedatives, it would not have a highly toxic effect.

"It's either related to the method of committing the crime or the motive of committing the crime... or both?"

Chen Yi touched his chin. If it was related to the motive of committing the crime, it was useless to speculate. The answer could only be obtained by investigation or direct interrogation of the suspect.

"Confirm it again."

Chen Yi took out his mobile phone and found the group where the rich second-generation friends gathered and sent a message.

[Does anyone know a botanist? ]

Reply: No, what's the situation, Mr. Chen?

Reply: No, next one.

Reply: I am a botanist, ask me.

This sentence attracted a lot of jokes and ridicule.

Chen Yi looked at it for a while and was about to put down his phone.

[I know someone]

A friend replied.

Chen Yi: Is it reliable?

The other party: Reliable, it's an old professor, a friend of my grandfather.

Chen Yi: Please help me call and ask, tears, plants, and highly toxic three keywords, are there any corresponding plants, I will treat you to dinner another day.

The other party: No problem, wait a moment.

The group became lively. Chen Yi rarely showed up in the group. Whenever he showed up, there must be a demand, which is worth everyone's complaints.

Since the other party became a criminal police officer and took the position of captain, he almost didn't get together with them, which was a pity.

But the friendship was still there, and everyone was still friends.

After a long time, there was a reply in the group: Chen Yi, I asked about lily of the valley.

Chen Yi: Thank you, I will contact you later, and we will go together if we are free.

Everyone: It's settled!

Chen Yi put down his mobile phone and ignored the new messages behind him. He started to search for lily of the valley by typing on the keyboard.

Detailed information came out.

Lily of the valley, a herbaceous plant of the genus Lily of the Liliaceae family, has a short plant and can reach up to...

Chen Yi slid the mouse to read the whole popular science article and found nothing related to tears.

"The keyword is wrong."

Chen Yi realized this possibility and deleted lily of the valley and changed it to lily of the valley.

After clicking on multiple web pages, Chen Yi's sight was fixed, and he immediately picked up a pen and paper to start recording.

He found what he wanted, and it was very accurate and detailed.

Lily of the valley, scientifically known as lily of the valley, also has other names such as May lily, tears of the Virgin Mary, stairway to heaven, gentleman lily, etc.

The whole plant is highly poisonous, and the leaves are particularly toxic.

Appearance: Known for its small white bell-shaped flowers, the fruit is fleshy and orange-red. If the flowers and leaves are kept in water, the water will become highly toxic.

Symptoms of poisoning: flushed face, irritability, headache, hallucinations, skin rash, dilated pupils, vomiting, stomach pain, nausea, excessive salivation, severe cases will fall into a coma and die of heart failure.

Time of poisoning: immediately.

Detoxification and treatment: Use quinidine to suppress heart rate after gastric lavage.

Distribution: Most common in the Lighthouse Country, native to England.

After recording the main information, Chen Yi picked up the notebook and glanced at it.

Excessive saliva secretion, skin rash, heart failure, these are all the autopsy results given by the forensic doctor, which can be matched.

"Tears of the Virgin Mary?"

"It seems to be a madman with a sense of ritual. There is no news from Zhuo Yun yet. The possibility that Li Yao and Zhang Su have no intersection is increasing."

"Just in case, this person must be found as soon as possible. I hope there will be results from Lao He."

While thinking, Chen Yi opened the map and began to mark the addresses of the two cases. The radiation range of the intersection has exceeded ten kilometers.

Now that everyone drives, the psychological safety zone is no longer particularly practical unless there are a lot of victims.

He picked up the phone and called Fang Shuyu.

"Shuyu, find a way to get a lily of the valley to determine whether the alkaloids in the deceased's body come from this thing."

"Oh, I asked a friend, it should be correct."

"Well, that's it for now."

After hanging up the phone, Chen Yi leaned back in his chair, and the scene of Li Yao jumping off the building a few days ago appeared in his mind.

The second person has died, so the result of Lu Guangjun's visit to Li Yao's hometown is probably not optimistic, and there is a high possibility of returning empty-handed.

Before Zhang Su died, how should this case be investigated?

Each case is a valuable experience. Chen Yi needs to think about this problem, and the Li Yao case and the Zhang Su case are similar.

There is nothing wrong with Lu Guangjun's investigation process. If there is no progress, he can only change the direction.

"Injection, sedatives, rare valley lily, 1.78 meters tall, and surveillance farther away."

There is no direction, but it is basically like looking for a needle in a haystack.

Analyzing from the perspective of the motive for committing the crime, if the murderer himself used tranquilizers, then he may suffer from depression, anxiety, irritability, etc.

Assuming that it was depression, the suicide rate of patients with depression is very high, and Li Yao had attempted suicide a few days ago.

The reasonable point seems to be coming. Is the murderer also a group with suicidal tendencies? Has he committed suicide?

Assuming that the murderer and Li Yao really did not know each other, then the reason why he killed Li Yao was to help her commit suicide?

Very strange logic, but there is never a shortage of strange people in the world, and their behavior is simply incomprehensible. Chen Yi has seen too many.

After many assumptions, Chen Yi felt a sense of urgency. This case needs to be solved in the shortest time.