Chapter 38
"No, Tian Qing said that when he got the medicine, there were only four phenobarbitals left in the medicine bottle. The 120 mg dose would at most make him sleep a bit more deeply, which didn't match the high concentration dose in his blood test." Zhu Jiang Jiang shook his head.

Moreover, the concentration of phenobarbital in Dong Wei's juice is about [-] mg, which means that more than one person may be poisoned.

"When I screened the surveillance in the room, I found that at least four people had touched Dong Wei's cup on the day of the incident." Lan Bo tapped on the computer to expand the four-frame picture.

These four people are the waiter, Dong Wei's girlfriend Xiaoman, Dong Wei's brother Sledgehammer, and Tian Qing who has confessed.

Among them, the waiter and Xiaoman both left at the touch of a button, but Sledgehammer directly exchanged his own juice with Dong Wei!
"Send the juice of the sledgehammer to the laboratory to see if there is phenobarbital in it?" Shi Chong said in a deep voice.

"Tsk tsk tsk, this Dong Wei seems to be really bad at ordinary times. So many people want him to die, wouldn't they even attack his brother?" Lin Zihan gnawed on his hamburger and shook his head repeatedly.

"Potassium cyanide is a controlled chemical, which is generally only available in laboratories, hospitals or factories. Sledgehammer is a photographer, and Dong Wei's girlfriend is a teacher at a university, so he has the opportunity to come into contact with potassium cyanide. Go check the records of their school laboratory?" Queen Bee asked.

"Yes." Shi Chong tapped his finger on the photo of Sledgehammer, and Sledgehammer's initiative to change drinks was really suspicious.

The interrogation of the sledgehammer did not go well, as if knowing that Shi Chong had not found any evidence, he behaved very calmly.

As for the behavior of changing the juice, he just explained that he didn't like the orange flavor.

"He drank half of Dong Wei's glass of juice, obviously he doesn't know about phenobarbital at all." Shi Chong looked at the laboratory report just delivered, and signaled Uncle Da to take this as a breakthrough point.

The cup that the sledgehammer replaced really contained phenobarbital, and the content was in line with what Tian Qing said.

"After taking the sedative, the whole person will be relaxed and drowsy, and it is difficult to feel negative emotions such as anxiety." Zhu Jiangjiang looked at the yawning sledgehammer and said.

"If we can't get hold of him, the interrogation will have no results." Shi Chong did not enter the interrogation room again, but handed over the task of interrogation to Uncle Da and Lin Zihan, while he chose to stay outside the interrogation room to observe.

Without sufficient evidence, it is impossible to keep these suspects in custody.

But once the suspect goes back, he will have enough time to destroy evidence and fabricate lies, and it will only be more difficult to solve the case. Therefore, this case is now a matter of every second.

"Captain, I investigated the laboratory of Baiyun University. The records of experimental consumables are complete, and the potassium cyanide is well preserved." Queen Bee called.

In order not to make a trip in vain, Queen Bee asked Xiaoman's colleagues after the investigation in the laboratory was fruitless, and learned that Xiaoman's daily life is simple, the only special thing is that she will receive flowers and gifts from mysterious suitors from time to time.

"At first they all thought it was from Tong Wei, but after they found out that Xiaoman never took flowers home, they realized that it was someone unknown. I asked, and all the flowers were sent before were sunflowers. But before the incident happened One day, that is, yesterday, Xiaoman received a handful of lavender." Queen Bee said.

"The flower language of sunflower is silent love, and the flower language of lavender is salvation." Zhu Jiangjiang looked at the information found on the phone, and frowned.

"In fact, not only the laboratory can get potassium cyanide." Shi Chong stared at the people in the interrogation room.

At this time, Sledgehammer was obviously taken aback after learning that Dong Wei died of phenobarbital poisoning.

Although he quickly covered it up with a yawn, he was still keenly spotted by Shi Chong.

"Let him go back and tell him that his suspicion has been cleared and he can go." Shi Chong said through Uncle Da's headset.

"Can you go?" The expression on Sledgehammer's face was a mixture of astonishment and confusion, but he did not see ease.

"Yes, the murderer has been found, you can go." Lin Zihan tidied up the documents scattered on the table, with a look of seeing off the guests.

"The murderer made a mistake for a long time, and you are ashamed to be a policeman. You all thought it was potassium cyanide obtained in the laboratory. Didn't you know that it was also in the developer?"

The sledgehammer avoided Lin Zihan's hand, sat back on the stool, and rubbed the messy hair.

Without waiting for Lin Zihan and others to speak, Sledgehammer confessed his crime.

As a photographer, he could easily get potassium cyanide. He was prepared to pour potassium cyanide into his own cup, and then exchanged it with Dong Wei, which replaced the poisoning step.

At the same time, because he knew that the death of potassium cyanide poisoning was more painful, he couldn't bear it, so he stole Dong Wei's medicine and gave him to take it in advance, so as to ensure that no one would find out when the crime happened.

Unexpectedly, due to poor grasp of the amount, too much phenobarbital was put in, so that Tong Wei did not die of potassium cyanide, but died of phenobarbital overdose.

As Tong Wei's brother, it was easy for him to come into contact with Tong Wei's drugs and poison them in advance; as a photographer, only a part of the potassium cyanide was enough for development.

So far, all explanations seem reasonable.

"What's the motive? Why do you want to do this?" Uncle Da asked in a deep voice.

"Motive? Seeing that he doesn't like it, what motive do you need to kill someone? I have pleaded guilty, and I have explained clearly how I committed the crime. I flushed the plastic bag containing potassium cyanide into the men's toilet. If you can't get it, I won't." no way."

Sledgehammer crossed Erlang's legs, yawned again and again, and tears overflowed from the corners of his eyes.

"Ask him if he sent the sunflowers and lavender." Shi Chong said.

Sure enough, although Sledgehammer hesitated for a long time, he finally admitted that he was the mysterious person who silently sent flowers to Xiaoman.

"He is too cruel to Xiaoman. I have persuaded him many times to let him go if he doesn't love him, but he is a lunatic." Sledgehammer's expression was dull, as if he was recalling a worthless person.

"He told me the day before yesterday that he found that Xiaoman had cuckolded him, and he said he wanted to show her off. He would kill her sooner or later, and there was nothing I could do about it."

"The murderer is not him." Shi Chong squeezed his fist.

"The death time of central nervous drugs such as phenobarbital is not only related to the concentration, but also related to the person's physique. Dong Wei has a long history of drug dependence, so he may not be as obvious as ordinary people after taking large doses. So it's hard to judge when he was poisoned." Zhu Jiangjiang sighed helplessly.

Considering the time of poisoning and the difficulty of operation, the most suspicious object is Tong Wei's girlfriend.

But the sledgehammer pleaded guilty first, with reasons and evidence.As long as Xiaoman doesn't admit it, there's nothing she can do about it.

After knowing what Sledge Hammer has done to her, will she be willing to take the initiative to plead guilty?Or is this the result she wanted?
(End of this chapter)

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