Listening to Qin Yongmei, Zhou Mei was still a little proud.

"I'll just say, even the most cunning criminals will leave clues. According to Locard's law, material exchange is inevitable at any crime scene. No matter how careful the offender is. ”

"Ahem, in fact, no new evidence has been found, it is still the same as the original. ”

"Oh, what does that mean?"

"It is an analysis of the original physical evidence. As a result, it was accidentally discovered that the offender was related to a certain person......"

"DNA, isn't it? Great. We have mastered this kind of internationally advanced technology! I heard that it is the credit of Baike, right?"

Bai Ke touched his head: "It's a little meaning, it's just a small skill of carving insects." ”

"Then this should be considered a paternity test, right?" asked Zhou Mei.

Bai Ke nodded: "It should be counted." ”

"Was it the criminal's mother or father who was found?"

"Father. ”

"According to the analysis of criminal psychology, there must be something wrong with the family of origin of a perverted murderer like this. ”

"But the family of the criminal has not been found yet. ”

"What do you mean, didn't you find his father?" Zhou Mei was a little confused.

"His father is only related to him......"

"Oh, I see, bastard! must be bastard! I've said that in a paper before. Most illegitimate children will have psychological problems. Today's young women are so disrespectful. Casual relationships with others not only bring trouble to yourself, but also bring safety risks to society. ”

"I think it was more than 20 years ago. ”

"Oh, yes, yes, it's the same in all ages, there are people who don't respect themselves. ”

"yes, that's too self-respecting. Some for the sake of stuttering, and some for a good job, they easily betrayed themselves. ”

"Where is this father now?

"I found it, and now I'm lying in the morgue of the provincial bureau, hehe. ”

"Dead?"

"yes. ”

"It's okay, check his social relations, the relationship between men and women. ”

"yes, it's being checked. ”

"Where is he from?"

"Dongying Township. ”

"Is it our local? Dongying Township seems to be about to reach Beipan. ”

"Yes, but he was transferred from other places ten years ago, and he used to be a village cadre in another village. ”

"Which village?"

"Qiandian Village. ”

Zhou Mei subconsciously shuddered: "Who?"

"Cong Jisheng. ”

Zhou Mei's face changed drastically, and her body was shaky.

It's like standing on the edge of a cliff and about to fall down at any moment.

Qin Yongmei hurriedly hugged her shoulder: "Are you okay, Professor Zhou?"

"It's okay......"

Zhou Mei sat down with her hands on her forehead and gasped: "I'm a little hypoglycemic." ”

As she spoke, she took out the White Rabbit toffee from the iron box on the table, quickly opened the candy paper and put it in her mouth.

Chew on it and close your eyes comfortably.

It took a while to return to normal, and he smiled: "I'm sorry." ”

It's as if the scene never happened.

"It's okay, there are a lot of people with low blood sugar, so remember to eat breakfast in the future." ”

"Well, well, you can come along. ”

"No, no matter how busy I am, I'll have breakfast. ”

Bai Ke stretched out his hand: "Bring me a piece." ”

Qin Yongmei looked at Zhou Mei: "Professor Zhou, do you know Cong Jisheng?"

"How would I know that kind of person. Zhou Mei looked contemptuous.

"But how do I remember that you said before that you went to the countryside in Qiandian Village. ”

"Oh, you, you must have heard it wrong, it's Houdian Village, hehe. Just one word. ”

"One after the other, it shouldn't be far away. ”

"yes. But I was a child when I went to the countryside, and I had just turned sixteen. ”

"The third class, graduated from junior high school in '66, right? ”

"yes, that era......"

Zhou Mei's gaze became dizzy, and she seemed to be attracted to that era.

But suddenly, she came to her senses again and looked down at her watch.

"Oops, I almost forgot, I still have classes, I'm sorry......"

Qin Yongmei got up: "Okay, I won't bother you." ”

"Well, then we'll talk again when we have time. ”

Outside the door, Qin Yongmei frowned, took out a small plastic bag from her bag, put a few heads in the palm of her hand, and then put the plastic bag back in the bag.

Bai Ke was speechless for a long time in surprise.

"Mom, you, you also think there is something wrong with her?"

Qin Yongmei sighed and nodded: "Yes, since the first day I met her, I felt that she had a psychological problem. ”

"The more people with psychological problems, the more enthusiastic they are to study psychology. But not everyone has the courage to face the most secret corners of their hearts. If you have been suppressed for a long time, it will explode sooner or later. ”

"Still, I believe in her character. She is not bad in nature, she is a person with a sense of justice. Even if the criminal is her son, it is not her fault. ”

"Not necessarily. As she herself said, the vast majority of psychopathic murderers are caused by the family of origin. ”

Back at the provincial bureau, Qin Yongmei and Bai Ke hurriedly came to the laboratory.

Dr. Yu was checking the atlas in front of the computer, and when he saw the two of them coming in, he hurriedly greeted them.

"You're here again?"

"yes. ”

Qin Yongmei took out the plastic bag containing Zhou Mei's hair from her bag and handed it over: "Help me test my DNA, compare it, and see if there is any blood relationship with that criminal." ”

"Okay. Dr. Yu took it.

Qin Yongmei asked, "It is estimated that it will come out in a few days?"

"We work overtime and can come out in three or four days. ”

With that, Dr. Yu sat down, used tweezers to clip the hair out of the plastic bag and put it in the vessel, and then put it under the microscope to take a look.

"You're busy, let's go first. ”

"Wait!"

Dr. Yu glanced at the microscope and suddenly stood up again.

A look of shame: "I'm sorry, this ......"

"What's wrong?"

"These hairs don't have hair follicles, so I'm afraid I can't detect DNA ......"

"Ah, how can this be?"

"Maybe we have ...... technology"

"It's not your technical problem. ”

Bai Ke also suddenly remembered.

Mom probably took advantage of Zhou Mei's shoulder to take away her hair.

This type of hair falls out naturally and generally does not have hair follicles.

It can't be like a film and television work written by a brain-disabled liberal arts student, where DNA can be detected by just a single hair.

Qin Yongmei was disappointed and annoyed: "I thought a few hairs would do, I knew to take something else......"

Walking out of the provincial bureau, Qin Yongmei also complained: "Isn't this DNA very powerful? ”

"Didn't you think fingerprint detection was very powerful at the beginning? But it's not the same as the limitations. ”

"So what do you think you can do to test for DNA?"

"Nails, cigarette butts, lipstick, bodily fluids. Anyway, if it is biologically active, it can be tested. ”

"It's a pity, I knew I stole a lipstick from her or something. ”

Bai Ke was taken aback: "Mom, you ......"

"What's wrong?"

"So you're such a person!"

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