After Lu Chuan returned from the scene, he ran around the system as soon as he returned from the scene.

As a result of the first corpse, there was no target information in the system, and identification failed. Yang Sen did the DNA information comparison of corpses, but he just went through the process, and he didn't think that he could gain anything at all.

The results of the system comparison are unexpected. Rushing to the computer, Yang Sen hurriedly checked the comparison results.

Lao Bai and Lu Chuan on the side also put down their work and surrounded them. If this comparison is successful, the identity of the second corpse will be confirmed.

"Than it?" When Lao Bai came over, Yang Sen had already seen the results, but the results were somewhat unexpected.

"It's like...... It's not comparable. Lu Chuan walked to the computer and took a closer look, and there was indeed a hint of successful comparison of homologous DNA information.

However, the object in the comparison was the DNA information of the first corpse found yesterday.

"The DNA information of these two corpses is the same?" There are many types of DNA information comparisons.

For example, the same identification is to determine the identity information through DNA. In addition to this, there is also paternity testing, homologous DNA confirmation.

The former judges the genetic relationship between parents and children, and the latter judges the relationship between siblings. And now the results that appear on the computer confirm that the DNA genetic material of the corpse found yesterday and the corpse found today have homology.

The two are sisters.

"I'll tell Team Qin about the results of the comparison first." Liu Guodong took out the comparison report from the printer and went directly to report.

Although the identities of the two bodies have not been confirmed, the relationship between the two is that of sisters, which is also of great help in solving the case.

When the front line is investigating, the scope can be narrowed down a little more. After a short surprise, Lu Chuan got busy again.

The physical evidence collected this morning should be analyzed as soon as possible. Then Lu Chuan also had to collect trace physical evidence on the second corpse.

Judging from the current clues, the construction site of Qinghe Playground is definitely not the first scene of the murderer's crime.

The means by which the two were killed are the same, and the murderer is the same person, so the first scene of the murder is likely to be in the same place.

A trace analysis of the second corpse may lead to new discoveries if it can be compared with the analysis of the first corpse.

Lu Chuan was busy here, and it was already three o'clock in the afternoon.

"Master, I'll go to the forensic doctor to collect trace physical evidence on the second corpse." Liu Guodong nodded: "Do you need our help?" "The trace physical evidence of the first corpse has been sent to the technical appraisal center of the provincial department.

Director Song Jiangguo personally called the leaders of the technical appraisal center, and the results should be available soon. After all, the demand for trace physical evidence identification in the province is not very large, or there are not a few times a year.

There's still a lot of staff there.

"No, I asked Shen Yan to help me yesterday," Lu Chuan looked at the time: "And the autopsy is done over there today, I'll go see if it's done." "There is only one dissection table in the dissection room, and Lu Chuan has to wait for the autopsy of a corpse to be completed if he wants to collect trace physical evidence.

Dissection room. Wang Changjiang had just taken off his white coat and was washing his hands. Unlike Shen Yan's full armament, Lao Wang's forensic doctor is much more casual when dissecting.

Masks are generally one layer, protective isolation clothing and the like are not used at all, only gloves are worn with two more layers.

"Brother Wang, you're done here?" Wang Changjiang turned his head and smiled and showed his big white teeth: "Routine autopsy, a little found, but not much, just finished." ”

"Oh?" Although Lu Chuan is not a forensic doctor, he is still interested in the forensic doctor's discovery: "Brother Wang, what have you discovered?" ”

"There are bruises in the subcutaneous tissues, and it is very likely that the deceased suffered some blow injuries before he was killed, but the time was relatively long, and the murderer's methods were relatively secretive, and the skin was not injured." Shen Yan also took off her protective equipment at this time: "The marks of the deceased's wrists and ankles found yesterday were bound with duct tape, which should have been left by the murderer when he committed the murder." "The autopsy report has been sent to Qin Yong, but it is not very helpful.

In an autopsy, the thoracic, abdominal and pelvic cavities are examined after the incision. All organs are visually observed to determine the extent of decay and the possibility of poisoning.

And according to the freshness of the organs, the time of death can be judged more accurately. The time of death of the first body was around 1 a.m. the day before yesterday.

After the murderer killed, he directly threw the body.

"Although the outside of the corpse was frozen and stiff, the stomach and organs were not completely frozen, and no traces of organ freezing were found during the autopsy." Wang Changjiang shook off the water stains on his hand: "Xiao Lu, are you here to collect trace physical evidence on the second corpse?" Lu Chuan nodded: "The first one has been done, and the second one has also been done to see if there is anything to be gained." ”

"That's okay, Xiao Shen will help you, and I won't accompany you." Wang Changjiang left, and Lu Chuan began to collect trace physical evidence of the second corpse.

Shen Yan has already cooperated once, and this time she also has experience. Being a criminal police officer is like this, the first time I solve a case, I am always a little confused.

The more cases you solve, the more proficient you become. This is also the reason why many suspects are caught at once after killing people.

What the criminal police do in a day is to deal with criminals, but murderers are likely to only have one chance to deal with the criminal police.

No matter how much you rehearse and plan in advance, you are not as skilled as doing it a few more times. The reason why serial murder cases are not easy to solve is because the murderer was not arrested after killing the first person, and he was killed later, but he was not caught.

As a result, if you are familiar and experienced, it will be even more difficult to grasp. Because the first corpse had just been dissected on the dissecting table, the second corpse was temporarily placed on the floor in the corner.

There is a corpse freezer in the autopsy room, but the corpse is meant to be thawed for dissection, so it is impossible to put it in the freezer.

It took Lu Chuan and Shen Yan some effort to get the corpse onto the dissecting table. Every dissection is no less than a doctor's surgery.

The smooth dissection table had been cleaned up by Shen Yan and even disinfected. This ensures that the body is not contaminated twice.

Moving a corpse in the dissection room of the criminal investigation detachment is actually no different from moving an object. But if at the funeral home...... It may feel different.

"I'll scan it with a UV inspection lamp first." With yesterday's experience, Lu Chuan focused on the wrists and ankles of the corpse this time.

Sure enough, the traces of the tape binding were clearly visible under the irradiation of the ultraviolet lamp. Not only that, but on the inside of the left ankle, half a blurred fingerprint appeared in Lu Chuan's field of vision on the trace of the tape.

Although the fingerprint is not very clear, it is enough for fingerprint identification and analysis. Could it be that the murderer left it?

"Help me take down the inspection light." Shen Yan broke the corpse's thighs, and her emotions were a little high. If this is really the fingerprints left by the murderer, then maybe the case will be solved!

The intermediate fingerprinting skill is perfect for use here. Soon, Lu Chuan completed the collection of fingerprints, but the more he looked, the more Lu Chuan felt that the fingerprints were somewhat familiar.

It's like I've seen it somewhere!