Chief Female Forensic Doctor

Chapter 187 The Cause of Insanity (1)
Qi Zirui, who had quick eyes and quick hands, still failed to catch the suspect again.

On the busy street, vehicles coming and going blocked Qi Zirui's way, and he watched helplessly as the suspect fled to the other side of the road.

Qi Zirui was not very familiar with the route in this area, and when he passed the road, the suspect had long since disappeared. Qi Zirui searched several streets, but could no longer find the slightest trace of that person.

"Damn it!" Qi Zirui thumped the wall angrily, only to realize that he was still holding the suspect's coat in his hand.

The jacket is blue, with the words "chemical cement" on it. It looks like the work clothes of a cement factory.

Lost the suspect, but left behind this coat, which can be regarded as a small gain.

Going back the same way, Qi Zirui saw that Gao Yanbo was still waiting for him, but there was an extra bicycle left by the suspect beside Gao Yanbo.

"Call quickly and ask them to transport the car to the forensic department to extract the fingerprints and the suspect's dander." Qi Zirui was somewhat uncontrollably excited, after all these days, he finally found something Substantial stuff.

If the person just now was really the murderer, then with fingerprints and DNA, it would be much easier to find out the identity of that person.

Soon, a special car came and took the bicycle away.

The blue coat with "chemical cement" in Qi Zirui's hand was also put into the evidence bag and taken away.

Of course, these two things were only allowed to be taken away after Gao Yanbo and the others took pictures and kept samples.

Before the test results of the forensic department came out, what Qi Zirui and the others had to do was to find out if there was a cement factory with the same overalls as the one worn by the suspect.

And the fastest way to know this result is to go to several large clothing companies and investigate which ones have made such clothes!

The police who received the task quickly launched an investigation, and within two hours, Qi Zirui received a message from the sub-bureau that he had found a clothing company that produced that kind of overalls!
According to information from the sub-bureau, the garment factory produced a total of [-] pieces of these clothes, sold [-] pieces to the cement factory, and another [-] pieces were sold loosely. It is impossible to verify to whom.

The employees of the cement factory will have a health check before entering the job, and no one has a history of mental illness.

Then, the suspect is most likely not from the cement factory. In this way, the little clue just now is broken again!

"Boss, Brother Feng called just now and said that he found blood on that dress, and now he is going to extract it for testing. It is very likely that it is the blood of someone who died before. If the test results are really If this is the case, then it can show that that person is the murderer!"

Mu Huixing hurried into Qi Zirui's office, and swept away his frustration when he heard that the identity of the suspect could not be confirmed. He was able to confirm that the person was the murderer. No matter how you say it, it was a piece of morale-boosting news. But at least we can know that he is the murderer, right?

Moreover, the suspect's complete fingerprints and skin flakes have been extracted from the bicycle. Soon, the suspect's DNA will be released. He doesn't believe it, and he won't be able to find that person by then!

Qin Xiaobao went to the hospital to visit Qi Ziyu, Li Ji was extracting fingerprints, and Qiao Feng also took the suspect's dander for DNA testing, Yang Aoxue was busy sorting out the database, so the blood on the blue dress was tested It fell on Qin Luge's shoulders.

Previously, Su Er had collected the DNA data of the six mental patients who were most likely to commit crimes from the hospital, and handed over the copies to the forensic department for comparison when the test results came out.

Now, only one of them is expected to be consistent with the assay results.

The seriousness of this case made everyone dare not delay for a moment. After staying up all night, they finally came to the result at dawn the next day.

All of them were listless, with dark circles around their eyes, and drowsy.

But when they saw that there was indeed a piece of DNA data that was consistent with the DNA tested, everyone suddenly felt that the hard work was worth it.

The mental patient is Qiu Chao, who is 24 years old.

According to information from the branch office, Qiu Chao is currently unemployed, lost his mother at the age of 9, and his father remarried when he was 11 years old. Two years later, Qiu Chao's father passed away. After dropping out of school, 13-year-old Qiu Chao lived with his stepmother.

From the age of 13 to 18, Qiu Chao was almost invisible, and no one knew why.

Until the beginning of this month, Qiu Chao's stepmother took him to the hospital to see a doctor. At that time, Qiu Chao's condition was not serious. Obviously, the doctor did not expect him to suddenly become a murderous maniac.

It was thought that Qiu Chao could recover through pharmacology, but now it seems that after being discharged from the hospital, Qiu Chao received new stimulation, which made his condition more serious, which led to frequent seizures.

The blood test report has also come out. There are old and new bloodstains on the clothes. The older bloodstain was not found in the DNA library, so it is unknown. The other drop is consistent with the DNA of the last victimized woman.

In this way, it can already be concluded that Qiu Chao is the serial murderer!

When Qi Zirui led people to surround Qiu Chao's house, the building was already empty and disappeared, and according to Qiu Chao's neighbors, Qiu Chao's stepmother hadn't shown up for several days.

Since Qi Zirui and Gao Yanbo failed to hunt down Qiu Chao for the last time, Qiu Chao seemed to have evaporated from the world, and he was never seen again.

After Qiu Chao dropped out of school, he stayed at home and never went out in those years. Why?

In addition, what caused Qiu Chao to have mental problems?
The policemen in each sub-bureau are still struggling to find the trace of Qiu Chao, while the special case team is dedicated to investigating why Qiu Chao lost control, which is the key to preventing Qiu Chao from killing again.

Only by finding the cause that caused Qiu Chao to lose control of his mind can he prescribe the right medicine and effectively prevent the continuation of the tragedy.

Fortunately, with the help of the villagers, Qi Zirui and the others found Qiu Chao's elderly grandmother who was sent back to the countryside by Qiu Chao's stepmother a few days ago.

When the old man heard about Qi Zirui's identities, he didn't say anything, he was still in tears.

This action clearly shows that this old lady knows something, but it is a pity that she is very old and has limited mobility, so she is powerless to help her grandson's suffering.

Qiu Chao's stepmother was originally mean to Qiu Chao, but because of Qiu Chao's father's death, she felt that it was very burdensome for her to have an extra oil bottle for no reason.

A woman in her 30s who has no skills at all, with a son who is not related to her at all, and an elderly person who needs to be taken care of, Qiu Chao's stepmother loses her temper more and more often.

(End of this chapter)