Detective: Open your eyes, I am handcuffed in the interrogation room

"Plant alkaloids plus sedatives..."

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

There are still many poisons that can cause death in a short period of time, but the murderer chose to delay the killing. In order to succeed, he even added sedatives to make the victim die slowly in a coma.

It sounds like it's a bit more troublesome, and it's not meant to increase the victim's pain.

Dying in a coma is no different from euthanasia.

In this process, once the unconscious victim is discovered, the possibility of escaping is still very high.

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

Chen Yi spoke: "Both victims have a chance to live. It will take at least an hour from ingestion of toxins to death, but they are not very lucky and have not been discovered."

"The way the murderer used plant alkaloids to delay the killing gave me the feeling that... he had no intention of killing, what do you think?"

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

"There is also this man. The place where he was unconscious was extremely dark and there was no light. Even if there were many guests going there to use the toilet, it would be difficult to notice that there was a person lying on the ground with his eyesight and drunkenness."

"So, it seemed that they were given a chance to live, but in fact the chance was slim. The result said it all, both of them died."

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

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

Fang Shuyu: "Okay."

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

When Zhuo Yun also returned to the city bureau, he reported the search results around the crime scene and found no syringes or anything like that.

It seems that the murderer did not throw it away, or handled it more secretly.

The time came to 11 o'clock in the morning, and the investigation work was proceeding at a normal pace.

The surrounding surveillance did not capture any suspicious persons. The main reason is that the location is too remote and there is a lack of surveillance. Not to mention easy to avoid, even if you don't deliberately avoid the probe, the chance of being photographed is not high.

The deceased was identified by comparing fingerprints in a database.

Zhang Su, 32 years old, is an out-of-towner, unmarried and living alone. His profession is a computer software engineer, commonly known as a programmer or code farmer.

"A foreigner, unmarried, living alone."

Chen Yi automatically screens for common points in his mind. It is not yet known whether it is useful.

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

Zhuo Yun: "Okay, I'll take people 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 online, and fixed the photo.

Shi Xin came over: "Chen Yi, I checked that pendant. There are many of the same model online. I don't have much hope of getting a breakthrough from the source of the pendant."

Chen Yi nodded slightly and didn't say anything. Since the nationwide online shopping, the source of items has become increasingly difficult to trace. The development of technology has both advantages and disadvantages, and it has also brought great convenience to criminals.

When Shi Xin and Chen Yi stood side by side, looking at the victims and condensed clue information on the whiteboard, it was very clear.

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

When will Xin give his own analysis.

"Both of them are foreigners, and they are both unmarried and living alone. Captain Lu has checked Li Yao's interpersonal relationships and Zhang Su is not among them. Therefore, the two may know each other because of hobbies and hobbies, in a small circle."

"What do you think?"

Chen Yi agreed: "It is possible that conflicts arise in a special small circle and trigger the murderer's desire to kill. But killing requires a lot of reason and courage. If we are just acquaintances, I always feel that It’s a bit weird…yes, sedative drugs.”

"Old He, do you think it can be a reasonable explanation if the sedative drugs were used by the murderer himself?"

Shi Xindao: "I am also thinking about this issue. The state stipulates that pharmacies cannot sell sedative drugs privately. If necessary, they must go to the hospital to get a prescription. Under normal circumstances, the person who can possess sedative drugs is either a doctor or a doctor. It’s the patient.”

"People who take sedative drugs usually have symptoms of anxiety, depression, mania and even schizophrenia. From the psychological analysis of crime, the crime rate of this group of people is relatively high compared to ordinary people, and they are easily stimulated."

"What is a small thing to ordinary people may be a big deal to them, and it is very likely that they will become murderous just because of a word."

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

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

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

When is new: "Okay."

The unknown is the scariest thing. Before finding out the relationship between Li Yao and Zhang Su, no one dares to say with confidence how many people the murderer will kill.

As night fell, the investigation continued.

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

This is a light blue pendant that was present at the scene of both murders. It is in the shape of a teardrop. The technical department is basically certain that it is brand new and has no traces of human wear.

Why the murderer left this thing behind is beyond me.

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

"Poison, tears."

Chen Yi typed on the keyboard to search for keywords, and found that all that came up were irrelevant information such as "Are tears toxic?" "Why do people shed tears?"

He changes keywords.

Plant alkaloids, tears.

Still no gain.

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

"Either it has to do with the modus operandi or the motive...or both?"

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

"Make sure again."

Chen Yi took out his mobile phone, found a group of wealthy second-generation friends, and sent a message.

[Does anyone know a botanist? 】

Reply: I don’t know you. What’s going on, Mr. Chen?

Reply: I don’t know, next one.

Reply: I am a botanist, ask me.

This sentence attracted a lot of joking ridicule.

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

【I know one】

A friend replied.

Chen Yi: Is it reliable?

Opponent: Reliable, he is an old professor and my grandfather’s friend.

Chen Yi: Please call me and ask if there are corresponding plants for the three keywords of tears, plants, and poison. I’ll treat you to dinner another day.

Opponent: No problem, wait a moment.

The group became lively. Chen Yi rarely showed up in the group. Whenever he showed up, there would be demand, and it was worthy of everyone's complaints.

Since the other party became a detective and took the position of captain, he almost stopped hanging out with them, which was a pity.

But the friendship is still there and everyone is still friends.

After a long time, there was a reply in the group: Chen Yi, asked about Lily of the Valley.

Chen Yi: Thanks, I’ll contact you later and let’s meet if you have time.

Everyone: It’s settled!

Chen Yi put down his phone and ignored the new messages. He tapped on the keyboard and started searching for Lily of the Valley.

Detailed information is out.

Lily of the Valley is an herbaceous plant of the Liliaceae family. The plant is short and can reach up to...

Chen Yi swiped his mouse to read the entire popular science article, but found nothing related to tears.

"The keyword is wrong."

Realizing this possibility, Chen Yi deleted Lily of the Valley and replaced it with Lily of the Valley.

After clicking on multiple web pages, Chen Yi's eyes froze and he immediately picked up a pen and paper and started recording.

He found what he was looking for and was very accurate and detailed.

Lily of the valley, scientific name is Lily of the Valley, also known as May lily, Tears of the Virgin, Stairway to Heaven, Gentleman's lily, etc.

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

Form: Known for its small white bell-shaped flowers, the fruit is fleshy and orange-red. If the flowers and leaves are stored 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 may fall into coma and die of heart failure.

Time of onset of poison: Immediately.

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

Distribution: The most common in lighthouse countries, native place is England.

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

Excessive salivation, skin rash, and heart failure are all autopsy results given by the medical examiner and can be matched.

"Tears of the Virgin?"

"It seems that he is a madman with a sense of ritual. There is no news from Zhuo Yun yet. It is more and more likely that Li Yao and Zhang Su have no intersection."

"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 intersection of radiation range exceeded ten kilometers.

Now that everyone drives, psychological safety zones are no longer particularly practical unless there are very many victims.

He picked up his cell phone and dialed Fang Shuyu's number.

"Shu Yu, try to get a lily of the valley plant to determine whether the plant alkaloids in the deceased's body came from this thing."

"Oh, I asked a friend, I can't be wrong."

"Well, let's do this first."

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

The second one 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 without success.

How should this case be investigated before Zhang Su died?

Every case is a valuable experience. Chen Yi needs to think about this issue, and the Li Yao case and the Zhang Su case are connected.

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

"A syringe, sedatives, a rare lily of the valley, a height of 1.78 meters, and monitoring from a further distance."

It cannot be said that there is no direction, but it is basically looking for a needle in a haystack.

From the perspective of motive for committing the crime, if the murderer himself uses sedative drugs, he may suffer from depression, anxiety, irritability, etc.

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

It seems reasonable. Is the murderer also a suicidal group? Did he commit suicide?

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

It's a weird logic, but there will never be a shortage of weird people in the world, and their behavior is simply incomprehensible. Chen Yi has seen too many of them.

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