The magic is one foot high, and the road is one foot high.

With the continuous upgrading of thieves' burglary and unlocking technology, the security door is also constantly upgraded.

Correspondingly, the technology of lock picking companies is also constantly upgrading.

With the rapid development of today's society, the pace of modern life is very fast, and many people choose to rent a house to live alone, and naturally they often forget to bring their keys.

Unlocking is troublesome and expensive, and after unlocking, everyone needs to change the door lock.

Time-consuming, labor-intensive, and the point is that it costs money.

That's why the vast majority of people like to hide a spare key outside their home.

Under the mat at the door, under the flower pot at the staircase, inside the meter box, behind the Spring Festival couplets......

Although this kind of behavior is convenient for oneself, it also provides an opportunity for criminals to take advantage of it.

It is very dangerous if your action of taking the key is discovered by a malicious criminal.

The technical team did not collect valuable fingerprints on the spare key found outside the door, but it cannot be ruled out that the murderer used this spare key to enter the house to commit the murder.

With the advent of this spare key, there are many uncertainties in the case.

The identity of the murderer is no longer limited to being an acquaintance of the deceased, nor is it limited to seeking revenge.

Murder of passion and random murder are entirely possible, even if the other party is a sixty-two-year-old woman.

After all, we have seen too many of such perverted murderers.

The investigation of the site has come to an end, and the whole room is as if it has been cleaned, unusually clean and tidy, and no trace of value has been found.

An old man who lives alone, and is a retired nurse, must be a clean and diligent person.

Ningzhou Public Security Bureau, Forensic Medical Department Autopsy Room.

A female corpse had been placed on the dissecting table, and she was still curled up and lying on her side, and the sutures on her body were basically the same as when they were found, except for a few places that had fallen off during the transportation process.

Ren Qiushi changed into an anatomical gown and was wearing disposable rubber gloves, he stared at the corpse in front of him with a somewhat strange posture, and fell into deep thought.

Zeng Lan on the side was putting one tool after another that needed to be used for dissection into the tray, and then she came to Ren Qiushi's side with the tray.

"For a naked female corpse, the first thing to do is to check whether she was violated before she died."

Ren Qiushi said lightly, he looked at Zeng Lan beside him, and said slowly: "You come to check." ”

"Huh?" Zeng Lan looked at Ren Qiushi with some surprise.

"What? You're not going to ...... Still is......? Ren Qiushi looked at Zeng Lan with some puzzlement.

Zeng Lan didn't say anything more, and took out the test strip to check.

Ren Qiushi knew the reason why Zeng Lan was surprised, because the other party was a sixty-two-year-old man, and logically speaking, no one would be interested in a sixty-two-year-old man.

But now that it's a homicide, checking whether the deceased had been violated during his lifetime is a necessary step to be examined.

Zeng Lan collected biological samples from the female deceased's lower body and sent them to the DNA laboratory of the laboratory later.

The female corpse in front of her, her hair was a little gray, her eyes were slightly closed, and there were almost no corpse spots on her body, indicating that the blood on her body was basically gone.

After Zeng Lan carefully took pictures of the sutures on the deceased's body, Ren Qiushi held a scalpel and gently cut the sutures along the sutures.

Ren Qiushi picked up a section of suture with tweezers, got up and walked to the workbench on the side, and put it under the microscope to observe it by himself.

"It's a medical suture that's chemically synthesized and it's a very common thread-type material for surgical sutures." Ren Qiushi observed for a while and said slowly.

"In this way, the murderer's profession can be determined, that is, a surgeon." After Zeng Lan finished speaking, he added: "Or a forensic doctor." ”

Ren Qiushi nodded, but his brows were always furrowed, because this case was so strange, the identity of the doctor, the fist-like posture after the fire, all this was unreasonable.

Ren Qiushi pondered for a while, returned to the autopsy table, and continued the autopsy.

"There was a depression in the middle of the upper forehead of the deceased's skull, which was an obtuse wound, which was the main feature of a contusion wound caused by blunt object blows. Apparently he had been hit with a blunt object before his death. Zeng Lan said seriously, and at the same time wrote carefully on the autopsy record form.

Ren Qiushi nodded, and said in a deep voice: "The skull fracture is very serious, and this level of injury, compared to the wound in the neck, is difficult to be an absolute fatal injury. ”

Zeng Lan paused and continued: "The arteries and veins of the deceased's left neck are completely cut off, she should have been hit by the murderer with a blunt weapon and lost her ability to resist, and then the murderer used a dagger or other sharp tool to cut her neck. ”

"So the cause of death is very obvious, it is hemorrhagic shock death." Ren Qiushi's fingers lightly touched the window of the neck of some of the deceased, and said in a deep voice.

"So, what is the skull's tool for injury?" Ren Qiushi paused and asked softly.

Zeng Lan immediately spoke: "I have examined the skull injury of the deceased, the collapse is in a strip, and the fracture line extends to the base of the skull, and it is obvious that the murderer used a blunt stick instrument. ”

"It is very common to kill people by striking them with sticks until they lose their ability to resist, and then slitting their throats with a dagger in their hands. But after the murderer kills, why did he sew the deceased into a fist-like pose? And why put the dead in the bathtub? "Ren Qiushi has always been very strange about the murderer's behavior.

Such a painstaking act must mean something.

Zeng Lan also felt very puzzled, and said slowly: "After the murderer kills someone, he must first stitch it up, and finally put the body in the bathtub......

In a one-meter-high bathtub, it is impossible for the murderer to put the body in it first and then stitch it up.

"The deceased weighed fifty kilograms, and it seems that the murderer had a lot of strength," Ren Qiushi took a deep breath.

After the corpse was killed, it was lying on its side and curled up, and the corpse morture was very serious, and if you wanted to dissect the corpse, you could only destroy the corpse.

Ren Qiushi and Zeng Lan moved the joints of the deceased together, and the zombie naturally disappeared, but the sound was a force work, and the two of them were so busy that they were sweating profusely, and finally destroyed all the main major joints of the deceased's body.

Now, the deceased is lying on his back on the autopsy table, returning to his natural state, as if he was asleep.

Ren Qiushi held a scalpel in his hand and made a standard straight incision along the neck of the corpse all the way to the abdomen.

The musculature of the chest is gently separated, and subsequently the peritoneum is also opened.

"The heart of the deceased is in a state of wrinkling, consistent with death from hemorrhagic shock." Ren Qiushi said lightly.

Zeng Lan wiped the sweat from her forehead, turned around and went to the workbench to pick up a container, and after Ren Qiushi untied the deceased's stomach, she needed to extract the deceased's gastric dissolution as a key sample to judge the time of the deceased's death.

In general, the cause of death of the deceased has been ascertained, and the specific time of death and the examination of related aspects still need to wait for information from the laboratory department.

After the autopsy was completed, Ren Qiushi took out the needle and thread for suturing and carefully sewed the incision on the corpse.

Subsequently, he habitually tied a surgical knot......