When Pang Rongsheng and others heard the retelling of the past from Gu Chu's mouth, they were as shocked as she was.

Anyone who is engaged in criminal investigation or psychology-related work knows that many murderers who commit serial homicides often begin by abusing small animals. Because the cruelty to animals has been unable to satisfy their tyrannical and murderous desires, they gradually set their sights on animals that are larger than small animals such as cats and dogs - people!

If what the man said just now was true, and Wang Ting had already started to torture and kill small animals when she was in her teens, then she should have had serious psychological problems at that time.

Reasoning from the direction of human development, Wang Ting's living environment has not improved. Even after that, she dropped out of school and her life became more dark. Her psychological problems were difficult to adjust. At the age of fourteen, she was able to torture and kill puppies. In the next few years, she could not be channeled, and she would only target animals larger than dogs, which would satisfy her growing desire to kill and satisfy her broken spiritual world.

It's no surprise that Wang Ting's personality became a serial killer one day, but Wang Ting was the first victim of the corpse case.

From Pang Rongsheng's many years of experience in criminal investigation, he first doubted whether the first victim was really the "Wang Ting" they knew.

But judging from the DNA comparison results, the first victim is definitely Liu Hongmei's biological daughter.

However, all the corpses were sampled and tested in that year. The first corpse belonged to the same deceased person, and there was no possibility of errors in sampling.

"I'm reminded of a TV show I've watched."

Gu Chu's expression was a little solemn.

"There were two women who gave birth in the hospital at the same time. Both gave birth to a daughter on the same day. As a result, one of the women's sons accidentally mixed up the identity cards of the two newborns, resulting in the two children being arrested. wrong."

The first deceased is definitely Liu Hongmei's biological daughter, but it does not mean that this daughter is Wang Ting.

Gu Chu's guess is very bold, but have to say that such a guess is very reasonable.

"Fuck! Why didn't I think there was such a possibility!"

Several police officers on the side exclaimed in a low voice, thinking about it carefully, it is not impossible.

Wang Ting may have found out that she was not the biological daughter of that family, and she also discovered the child who had mistaken her identity with her back then. The other party may have a good and happy life because of her identity.

According to Wang Ting's psychological state at that time, it is very likely to stimulate her, resulting in the desire to kill.

So Wang Ting killed her by brutal means, and this time the killing completely inspired her tyrannical desire, so there were two subsequent victims.

As for why Liu Hongmei and Wang Fu, the two people who caused Wang Ting's psychopath, were not killed more than 20 years ago, it is actually understandable.

Because for Wang Ting, Liu Hongmei, a mother who had inflicted mental violence on her since childhood, was at the height of a ruler. In terms of psychological status, Wang Ting felt that she could not resist Liu Hongmei, so she could only vent her resentment on those who were weaker than her. On animals, even if she kills her first victim when she is an adult, she cannot overcome the fear that Liu Hongmei has developed over the years.

It was not until more than 20 years later that her mental state became stronger and stronger, and her fear of Liu Hongmei also began to fade in the past 20 years.

So one day, for some reason, she inspired the killing again. This time, she overcame the psychological shadow and killed the mother she once feared.

And this reason is most likely because Liu Hongmei discovered her.

Such speculation is self-consistent from the logic of the case and the psychological and emotional changes of the murderer.

"Let the forensic department do an expedited test on all the evidence we found from the Wang family's old house, focusing on DNA comparison."

Pang Rongsheng also recognized the possibility of Gu Chu's guess, so the most important thing now is to determine whether Wang Ting is Liu Hongmei's biological daughter.

The small room belonging to Wang Ting in the Wang family is still reserved. Of course, this is not because Liu Hongmei loves this daughter and looks forward to her return, but because there are more rooms in the small farmhouse, and Wang Ting's small room is not available for the time being. The broken room, and not long after Wang Ting ran away from home, Liu Hongmei went out to work, and no one would tidy up her room.

They brought back a lot of samples this time, old clothes in Wang Ting's room, old wooden combs in the desk drawer, a few hairs on the teeth, and a yellow and moldy toothbrush...

After more than 20 years, this long period of time has undoubtedly increased the difficulty of obtaining evidence. Now we can only hope that today's high technology can compare the DNA.

"You, bring a group of people to investigate all the people that Liu Hongmei has been in contact with during this period of time. Don't be afraid of the heavy workload. I will hire more people to come here. Remember to investigate all the people who have appeared in all of Liu Hongmei's movements, even if the workload is heavy. It's a passing, focusing on women around the age of 45."

If Wang Ting was still alive, she would probably be at this age. However, there is no record of her identity card being used in recent years. The other party may have changed her identity card. For money, it is easy to apply for a legal identity certificate in those relatively remote places.

Wang Ting wanted to cover up her own information, and it was normal to change her age, but her appearance couldn't deceive people. Even if she wanted to change her age, she would not change the scope too much.

Pang Rongsheng issued several orders one after another.

Judging from the current investigation of the people around Liu Hongmei, it is possible that her accident happened recently because she saw her daughter who eloped with someone more than 20 years ago, and she even took the initiative to find her when she found out. Triggered the opponent's murderous intent.

In this way, it is very possible to find out the suspect by checking the people Liu Hongmei has been in contact with recently who are more consistent with Wang Ting.

Of course, the premise of all this is based on Gu Chu's previous guess.

When the group returned to the police station again, it was already past one o'clock in the morning of the next day.

At this time, except for Gu Chu and Hua Ying, some police officers have not rested for thirty or forty hours. Pang Rongsheng looked at the tired subordinates and arranged for them to rest in batches. The rest of them all had a cup of espresso and continued to work overtime to search relevant clues.

"Liu Hongmei's social relationship is very simple. Apart from going back to her hometown recently, she hasn't left the Kaizhong Science and Technology Park for the rest of the time. All her actions are within the Science and Technology Park. We have already collected all the surveillance videos of the park for nearly a month. Now They are investigating one by one, and Liu Hongmei's colleagues have also finished taking notes, and they are all here."

Jiang Chen and Chu Ruonan reported their work progress successively.

"Liu Hongmei's son, Wang Fu, is currently in interrogation room No. 7. Eight days ago, he did go to Liu Hongmei's residence and asked him for money. He also had a dispute with Liu Hongmei and broke a lot of things. More than fifteen hundred yuan, he kept the change, took two thousand and five, and went to the chess and card room. He hadn't left the chess and card room in the past eight days. For a thousand dollars, we summoned the boss of the chess and card room and the people who gambled with him these days, which proved that Wang Fu ate, slept and slept in the chess and card room during this time, and the surveillance cameras in the chess and card room were also It proves it."

The two are worthy of being Pang Rongsheng's capable generals. They didn't need Pang Rongsheng's instructions, and they took into account some very detailed parts.

"Go to Interrogation Room No. 7 first."

Pang Rongsheng was looking through the transcripts Jiang Chen handed him, while walking towards the No. 7 interrogation room, but he had just walked a few steps when he suddenly turned around.

"You follow too."

This was said to Gu Chu.

"Shouldn't you be tired?"

Calculating the time, Gu Chu and the others set off for the airport to check in at six or seven in the morning, and arrived in Kaiyang City at noon. During this period, they had to eat bread and sandwiches for several meals, and they didn't take a short break. They ran to several places in succession. , should have been tired long ago.

"There's coffee."

Gu Chu raised the espresso in his hand, indicating that he was not tired yet.

"very good!"

Pang Rongsheng's eyes flashed with admiration, for those who engage in criminal investigation like them, what they need is the spirit and physical strength of fighting for days.

To be honest, women suffer a lot in this profession, not only because of social prejudice, but also because of the physical differences between men and women. After all, the police spend a lot of time working overtime and are more likely to encounter vicious criminals. Gu Chu can rely on It is not easy to get to where I am today.

In just one day, it was enough for Pang Rongsheng to have a clearer understanding of Gu Chu.

Clever, quick-witted, and able to endure hardships, this girl has an unlimited future. To be honest, if it wasn't for worrying that Jin City would not want such a talent, and that Gu Chu himself might be reluctant to leave his original unit, he would want to send her Transferred to Kaiyang City.

How did he know that the talent he admired was going to resign after finishing this case.

In interrogation room No. 7, Wang Fu was yawning.

These days, he plays mahjong twice a day, one at noon, and most of the evening games last all night. He only has a few hours in the morning to catch up on sleep, so he looks very depressed.

When Pang Rongsheng brought Gu Chu and others into the interrogation room, Wang Fucai managed to pull himself together and sat up straight.

"Officer, I really didn't kill my mother. How could I kill my mother? How many times do I have to tell you before you believe me?"

There wasn't much grief on his face, as if it wasn't his own mother who died, but an ordinary person.

"Just now this policewoman also investigated clearly. I haven't left the chess and card room at all these days. You can at most count me as gambling, but the amount of money I play is not large. How long can you lock me up?"

As he said that, a hint of excitement suddenly appeared on Wang Fu's face.

"By the way, my mother was killed in the science and technology park. Does this count as a work-related injury? The science and technology park has to lose money. Also, after the murderer is found, should the murderer also compensate my family?"

This thin face is full of desire for money, and the high-wattage light from the top falls vertically on his face, which is hideous and dazzling.

His performance is disgusting, and he really doesn't look like a murderer.

"Do you still have an impression of your sister Wang Ting? Do you know the name of the man who eloped with her more than 20 years ago, where he came from, and what job did he do?"

Pang Rongsheng sat down opposite him, and did not answer his previous questions.

"You asked that woman what she was doing. It's a disappointment. She left my mother and ran away. Are you going to bring her back to share the compensation?"

Speaking of the elder sister who ran away from home more than 20 years ago, disdain and resentment flashed across Wang Fu's face. His elder sister helped his younger brother to buy a house, a car and a wife, but he was a good older sister. Wild Man ran away.

"Anything you ask, you answer!"

Pang Rongsheng patted the table vigorously, as if a thunder had exploded suddenly in the airtight interrogation room, coupled with Pang Rongsheng's calm face, Wang Fu was frightened and honest.

He felt that the old policeman in front of him looked like a black policeman who would interrogate violently.

"It happened more than 20 years ago. How can I remember it so clearly? Anyway, I have never seen that man, and I don't know what he does."

Wang Fu muttered a few words.

Gu Chu's hand, which was taking notes, paused.

"What about your mother, hasn't your mother seen that man?"

Gu Chu asked a question.

"...No?"

Wang Fu replied uncertainly.

"No...my mother is dead, why do you keep asking my sister?"

No matter how dull Wang Fu was, he still had some meaning.

Pang Rongsheng still didn't answer, and then asked if he had gotten any news about his sister from his mother when he went to the dormitory to find his mother that night eight days ago.

The answer is of course no.

Pang Rongsheng asked some other details, during which time Wang Fu was not given a chance to think. If he answered a little slower, Pang Rongsheng would yell and scold him. He was so frightened that he was already drenched in sweat after answering these questions. .

"Is this the bracelet you wore when you were a child?"

Finally, Gu Chu took out the pair of silver bracelets she found in the old house.

"Oh, this is my sister's."

Wang Fu wiped the sweat from his forehead and said indifferently.

Now silver is not worth much, such thick and thin baby bracelets are sold by gram, and it costs only a hundred yuan to die. When Wang Fu was most short of money, he thought about selling this pair of silver bracelets. Unfortunately, he found a pair of silver bracelets. He couldn't find it in many places. He thought his mother had already sold the pair of bracelets, but how could he have thought that his mother had hidden them so carefully, so he wrapped the pair of bracelets and stuffed them in a worn-out swaddle.

But this bracelet was still valuable back then. It is said that when his mother was pregnant, his grandma fused a piece of Yuan Datou and asked the silversmith to make it. But in the end, his mother gave birth to a girl, which disappointed the whole family, but the bracelet was already gone.After hitting, let his sister wear it for a while.

Later, after he was born, his mother originally wanted to blend it and make a new style, but his grandma said that the bracelet was worn by a girl, which was bad luck, and he couldn't let him, a grandson, wear it, so his mother put it away.

These things were also mentioned when he listened to his grandmother rambling when he was a child.

But because he was still too young at that time, he only remembered these few words, and he didn't remember the details of what his grandma said.

It turned out to be the bracelet Wang Ting wore when she was a child.

Gu Chu looked at the pair of silver bracelets in the evidence bag, and fell into a brief thought.