Zheng Kai was actually looking forward to Wang Chong's ability to imagine real objects in the world of strange things. Perhaps, this ability can make it easy for Wang Chong to survive in the world of strange things.

After explaining Wang Chong, Zheng Kai did not go back to the dormitory, but ran in the direction of the police station. Originally, Zheng Kai took leave today and didn't need to go to work.

But Zheng Kai has something to check. When I came to the police station, many colleagues were a little surprised to see Zheng Kai, and after saying hello, Zheng Kai came to the archives.

"The starving ghost said that the merchant who died unjustly died not long ago, as long as he did not die normally, he should be able to find the corresponding file materials in the archives, unless the merchant is not from the northwest city of Zhi'an City." Zheng Kai turned over all the cases of the past year.

Among them, aside from the small cases that did not cause human deaths, there are almost 300 cases in which people died.

On average, one homicide occurs a day. Zheng Kai carefully browsed the information of these cases, and after excluding some of the cases in which the murderers confessed their guilt and closed the cases frankly, there were less than fifty cases left in his hand.

After a long time, Zheng Kai rubbed his eyes: "It's not easy to find." "Although there are less than 50 homicides in the scope, there is no evidence of all the convicted murderers in these cases, and some of them do not even have a convicted murderer, but there are only possible suspects.

And these suspects are under tremendous pressure from public opinion when they do not know whether they are murderers or not, and as many as 32 of them choose to commit suicide when they cannot bear the pressure.

And before they die, these suicides are talking about their wrongs. Of course, there is no way to confirm these words.

Just as there is no way to prove that they are murderers, there is no way to prove their innocence. Just then, there was a knock on the door of the archives.

Zheng Kai looked up, and it was actually Su Lan and Su Qing who came to the archive room together.

"Didn't you take a leave of absence?" Su Lan asked curiously. Su Qing naturally sat beside Zheng Kai, looking at the case files that Zheng Kai consulted in his hand: "What do you think these cases are for?" Zheng Kai sorted out the case in his hand and replied with a smile: "It's boring to stay at home, anyway, Gu Youde's trial has ended, and I haven't been affected too much, so I want to come to work normally." Su Lan looked down at the file in Zheng Kai's hand.

As a police officer's acumen, Su Lan found at a glance that these cases happened very close to now, almost all of them were murders that occurred within a year: "You are very interested in these cases?" ”

"No, it's just sorting out the recent case information." Zheng Kai put the file aside. Su Qing didn't think too much about it.

But Su Lan was suspicious: "You didn't lie to me, did you?" "I don't know why, after being in contact with Zheng Kai for a long time, Su Lan always feels that Zheng Kai's behavior is very purposeful, not like doing it casually.

Zheng Kai had a simple face: "I never lie to people." ”...... This sentence is actually a lie.

But Zheng Kai didn't say it, and no one knew. Zheng Kai changed the topic: "Won't Captain Su rest in the hospital for a while?" It's not good to have injuries on your body, and it's not good to run around. Su Lan teased interestingly: "Are you caring about me?" Still cares about me in front of my sister. Zheng Kai: ...... Su Qing glanced at Su Lan.

Seeing this, Su Lan didn't talk anymore, and her expression became serious: "The case of collective suicide is almost investigated, the murderer is the man who held me hostage in the vegetable market before, his name is Watson, a native of Zhi'an City, and he can only be found to be a psychiatrist, who has lived in many places and moved frequently, and more information has not been found clearly." Zheng Kai nodded.

Watson was the one who took the blame for the painter. But Watson was an accomplice. Although he only helped the painter hypnotize these living people, he was also responsible for the death of these living people.

After so many years of collective suicide cases, hundreds of people have died, and even if Watson does not commit suicide, what awaits him is the punishment of the death penalty.

"What about the autopsy report?" Zheng Kai asked curiously. Su Lan knew that Zheng Kai would ask this, so he handed the information in his hand to Zheng Kai: "The medicine injected into Watson's body before he died is actually the most common tranquilizer, which can be bought in many places, but the main manufacturer is Zhiwang Technology." "After Zhiwang Technology officially changed its name from Qiu Shi Pharmaceutical, the production scale of drugs has been weakened to a certain extent, and more funds have been invested in research and development, so it is not easy to want the drugs produced by Zhiwang Technology now.

Many drugs are produced by different manufacturers, but they will be sold with the authorized name of Zhiwang Technology.

The tranquilizer injected by Watson into his body is a very pure drug produced by the original manufacturer of Zhiwang Technology, which can be found on the needle tube The anti-counterfeiting QR code of Zhiwang Technology, as well as the specific production number.

Zheng Kai briefly flipped through the autopsy report. Basically no anomalies! Watson is in good health.

At least before the tranquilizer injection, Watson's physical characteristics were unusually healthy, and it could even be said that his health was somewhat exaggerated.

Watson has no hobby of exercising. Almost all of the muscles in his body grow naturally, but the density and relaxation of these muscles are much higher than those of normal people, which is why Watson was able to hold Su Lan hostage, and he could compete with Su Lan in terms of strength.

"The taurine and dopamine in his brain were secreted in large quantities before he died, which also caused him to be unusually excited before he died." Su Lan was afraid that Zheng Kai wouldn't be able to understand the above terms, so he kept explaining to Zheng Kai.

Zheng Kaimo rubbed his chin and asked a very critical question: "Then did he inject himself with a tranquilizer before he died to suppress his exuberant emotions?" ”

"It's possible, but it's the opposite." Su Lan pointed to the last column of the autopsy report, where it was written that the secretion of taurine had suddenly increased, and there had been a very noticeable drop in dopamine, which manages happiness.

Dopamine dropped, which showed that although Hua was very excited before his death, he did not have a trace of happiness.

And the sudden increase in taurine leads to an abnormal hyperactivity of the nervous system. Originally, tranquilizers were used to inhibit the secretion of these components.

But it seems that the tranquilizer actually accelerates the secretion of taurine. Zheng Kai looked at the autopsy report and fell into deep thought, Su Lan didn't bother Zheng Kai, she now slowly felt that Ren Xin's words were correct, maybe it was the right decision to listen to Zheng Kai's opinion on some things.

Zheng Kai's mind flashed! The opportunity he was waiting for came!