March 12, 2011

Zhou Ning quickly came to the small second floor of the criminal police team, and as soon as he walked to the forensic office, he heard a voice next door, he was slightly surprised, and glanced at the time on his watch, it was only 7:30 at this time, could it be that these people came early in the morning?

I tiptoed through the door and window to see that many of them were busy inside.

Zhou Ning shook his head, these are all technical maniacs, quickly returned to the office, turned on the computer, and logged in directly to the mailbox, he was anxious to know the test results, after all, the test report was not given yesterday, Xu Dayuan and the inspection center had a quarrel.

Fortunately, there were three unread emails in the mailbox, and Zhou Ning hurriedly clicked on them to receive them.

The others all crossed over, and he went straight to the detection of the yin channel extract, and did not find rice Qingzi, only a variety of oils existed, and the composition analysis was a common ingredient for the surface application of the elf, but in the body fluids, a DNA sample that did not belong to the deceased was extracted.

And underneath this DNA sample, there is a line in red that reads:

In particular, the sex chromosomes of this DNA sample are XXY.

Seeing this red letter, Zhou Ning's heartbeat accelerated, such a special DNA, this is too specific.

Zhou Ning hurriedly looked at the back test, after all, there were blood stains on the windshield, and found the last page, sure enough, this residual blood stain matched another DNA found in the deceased's body, Zhou Ning slapped the table twice.

Guessed right, really guessed right, it seems that the murderer found that the deceased came out alone very suddenly, so he made a temporary decision, as for the DNA residue in the deceased's body, either the dandruff oil fell off his hands, or there were injuries on his hands.

Of course, Zhou Ning was more inclined to the latter, there was a wound on his hand that rubbed against the windshield, and when he violated the deceased, he didn't care about this wound, after all, ninety percent of XXY's patients did not have Mi Qingzi.

At the same time as clicking to print, the door was opened, Liu Yongxin walked in with the eighth master's step, Da Zhao followed closely, and saw Zhou Ning with shiny eyes, and paused slightly.

"Early in the morning, what is this to eat, so excited, have you picked up the dog's head gold?"

Zhou Ning said with a smile:

"Almost, the inspection report is out."

Liu Yongxin hurriedly walked to the printer, read the reports one by one, and saw the boss with the last mouth open, Da Zhao stood behind Liu Yongxin, and also looked at it, scratching his head and looking puzzled.

"What does the XXY chromosome mean?"

Zhou Ning was in a good mood and was naturally willing to answer.

"You should have learned in biology class, in the sex chromosomes, males are XY, females are XX, people with XXY chromosomes usually show the physiological characteristics of XY males, and individuals with androgen deficiency may have different degrees of feminine secondary sex characteristics.

For example, it looks like a male, but the appearance is very short, the Adam's apple is not obvious, the chest does not have the pectoralis major muscle, but there is a thickened development of fat, the eggs and beard are underdeveloped, and the biogen may be normal but aspermia, or accompanied by low function.

Tennis player Sarah Gronelde, an XXY hermaphrodite, had undergone a male genital removal at the age of 19, was already biologically a woman, and later participated in women's competitions. ”

Da Zhao opened his mouth wide, and he couldn't recover from the shock for a long time.

In other words, this murderer is a "second son"? ”

Liu Yongxin paused, not particularly excited, but worried.

"This DNA is obviously different from the DNA in the investigation announcement issued by the city bureau, so does it mean that this case has nothing to do with this red-clothed serial murder case?"

Zhou Ning nodded, he also thought of this.

"I don't think it's an extension of the red-clothed serial murder case, it doesn't have much to do with our investigation of this case, let's do our own, if there is a connection, or the previous investigation of the city bureau is overturned, that's all for later, after all, at present, only the red-clothed and fingerprints were cut, which is considered a common denominator."

Liu Yongxin exhaled.

"Tell Dr. Lu, aren't they still busy recovering the skulls of those five nameless people?"

Zhou Ning picked up a copy of the printed material and nodded towards Liu Yongxin.

"Let me tell you, Master, give this set to Xu Da, I think I can be so clear about my illness, and I can rest assured that I boldly violated the victim, this murderer must have gone to have an examination, and I can start from this aspect."

Liu Yongxin smiled.

"Exactly what I thought."

Zhou Ning took the report and walked next door, and Dr. Lu quickly waved his hand when he saw Zhou Ning.

"Forensic Doctor Zhou came to take a look, there is progress on our side."

Zhou Ning folded the report in his hand and walked to Dr. Lu, people are here to help you, no matter what, this enthusiasm can't be dampened, so he didn't rush to say about the report.

Dr. Lu pointed to the monitor, which was not the size of a normal computer, but a 60-inch LCD screen with color avatars of five women appearing, and next to the avatars there were options for skin tones, hairstyles, and iris colors.

After a careful look, he found that these five people all had short hair at this time, and their skin and hair colors were the same, but at a cold glance, these five people seemed to have some similarity, and he couldn't tell where they were similar, but he felt that several people were very similar at a glance.

"In terms of details, we haven't adjusted it, this is synthesized according to the software, and various data of the facial features are calculated, but the length of the hair color or something, you can help you take a look, this is the file at the time."

As he spoke, Dr. Lu handed Zhou Ning a tablet with some electronic dossier documents on it, and Zhou Ning put the report on the table and began to go through them one by one.

The clarity of the photos at the scene is very high, but the complexion of the highly rotting corpse should not be in that purple-black state, there are many abuse wounds on the face, and the iris is no longer distinguishable, after all, after more than 24 hours of death, the cornea begins to be cloudy, and after more than 48 hours, it is completely opaque.

Zhou Ning squinted his eyes and stared at the composite image of the five people for a while, Xiaoqu leaned over and handed the controller to Zhou Ning, the hairstyle, skin color and iris color last time were chosen by Zhou Ning, he felt that Zhou Ning's judgment in this regard was more convincing.

"Forensic Zhou, you can make adjustments."

Zhou Ning didn't shirk it, took the control arm, stared at the first restoration map, and thought of Cheng Chunyan's appearance characteristics in his mind, changed his hair to chestnut brown, changed his hairstyle to long curls, and then changed his skin tone to a white color, and his iris also changed to dark brown, after all, most yellow people are this color.

After adjusting like this, click Apply, the No. 1 restoration map has changed, and Dr. Lu holds his chin with one hand and stares at the restoration map.

"How do I think this victim is a bit similar to the Cheng Chunyan who was restored before?"

Zhou Ning nodded.

"These people all have something in common, the distance between the eyebrows and eyes is far, the interpupillary distance is far, the lips are thin, the zygomatic arch is not obvious, and the jaw is slightly protruding.

Dr. Lu came to his senses and hurriedly went to the computer to look for it, Zhou Ning's hand movements did not stop, and he quickly changed the remaining four restoration drawings one by one, except for the hairstyle, all of which selected the same parameters as the first restoration drawing.

At this time, more and more people gathered next to the display screen, and everyone stared at the restoration picture and kept saying their thoughts, and Xiaoqu came closer.

"This one also shows makeup, but I don't have a lot of types."

Zhou Ning smiled and shook his head, he didn't understand the matter of makeup, but it was enough to adjust to this state and search in the household registration system.

Before he could say anything, Dr. Lu had already walked over excitedly, holding his laptop, and showing it to Zhou Ning.

"Forensic Doctor Zhou, you see this is a photo of the six victims, I just found out when you said this, although these six girls are younger and still in school, their hair is all big waves and dyed."

Zhou Ning took it and looked at it carefully, there were two photos on each page, one was the victim's ID photo, and the other was a photo of the scene, which could clearly see the dividing line of the deceased's dyed hair, as well as the curly state of the long hair.

"I just read it, the investigation report of these five victims, the estimates of the deceased's figure are all about 160 tall, weighing 80-90 pounds, it seems that the murderer has a special preference for chestnut brown curly hair and thin women."

Zhou Ning paused, and then said:

"Dr. Lu, the test report of our case came out, and a special DNA was found in the deceased's body and on the windshield, but it has nothing to do with the announcement in the Municipal Bureau's investigation warrant, maybe this is not the twelfth red-clothed serial murder case."

Dr. Lu waved his hand.

"Don't be stuck by these rules and regulations, we are engaged in scientific research, everything must see real results, we didn't say to find fault with the city bureau, just take it as an experiment, hurry up and search the restoration map of these five people in the household registration system!"