When she returned to the police station, it was already two o'clock in the afternoon, Qiu Lan hurried back to the office to get the morning's autopsy report and rushed to the conference room.

Because the Forensic and Forensic Departments had so far had a preliminary determination of the oil drum murder case, they needed to pass on all the information to the Serious Crime Unit.

At half past two in the afternoon, the basic information of the murder was projected on the large screen in the conference room.

"The deceased Tan Yinsheng, aged thirty-seven, from City A, lived in Daming City, Dongcheng District, and worked as an accountant in a small business," Xu Chengyan pursed his lips lightly, his expression was serious, he turned on the infrared rays, and focused on each piece of information.

"The circumstances of the murder are all here, because the situation of the garbage dump is complicated, so we have not obtained any valid evidence directly related to it so far, so I hope you can help a lot. ”

The voice settled, he glanced sideways at Qiu Lan, who was sitting on the right, nodded slightly, and said in a flat tone, "Expert Cao, now please project your appraisal results." ”

"Hmm. Cao Fan slowly stood up, picked up the thin layer of information in his hand, and the expression on his face was frosty, "This time we brought back a total of seven hundred and eight items that may be related to the garbage dump. ”

"We have inspected more than 400 pieces yesterday and today, and there are no new discoveries for the time being, and the others are still being tested, so let's let Dr. Qiu come first. ”

"Okay. Qiu Lan nodded, flipped through the information in her hand, and switched the projection on the screen.

She told everyone in detail about many questions and specific circumstances of the autopsy results, and at the same time raised her own doubts and speculations.

"When I was dissecting the body, I found that the wounds on the deceased's neck were caused after death, so I suspect that the murderer may have had a deep hatred for the deceased, or that after the deceased's death another person hated the deceased strangled his neck. ”

The photo on the projection screen shows a deep scar on the neck of the deceased, the wound has begun to decompose, and the bones and sinew inside are clearly visible.

After seeing this photo, the people at the meeting couldn't help but frown and look solemn.

Broken neck after death.

If it weren't for the deep hatred, it would definitely not be able to be so cruel.

"One more point. Qiu Lan pressed the controller in her hand and switched the content on the screen, "I found a mark on the chest of the corpse, it's very strange. ”

"The mark is a reddish circle, thirteen centimeters in diameter, and the corresponding ribs L3 and L4 under the skin are broken. She paused, her brow moved slightly, and a trace of doubt crossed her eyes.

"I thought about it for a long time, but I couldn't think of anything I wanted that could cause such force. ”

"Could it be caused by using a racket? Pei Pei frowned and asked suspiciously, "This shape, as well as the size, is very similar to a table tennis racket." ”

"No way. Qiu Lan pursed her red lips and shook her head slightly, denying Peipei's speculation without a moment's hesitation.

The subcutaneous fracture is equivalent to the force of the impact that would have thrown a person directly from the fourth floor.

A ping-pong paddle thrown down from the fourth floor, it had already cracked and shattered, how could it still cause such a regular shape, and she found no traces of sawdust on the corpse.

At the meeting, the members of the Identification Bureau and the Serious Crime Unit discussed for a long time, but did not come up with a hypothetical answer.

Common items on the market either do not match their shapes or are not strong enough to cause such a blow.

A circular scar became a mystery to the case.

However, the case of hiding the body in the oil drum is not only this one mystery.

Qiu Lan flipped through the information in her hand, found one of the pages, roughly browsed it, and memorized the contents in her heart.

"Please see the twenty-three pages of the information in hand, which is the decay on the corpse. She lowered her eyes and spoke indifferently, her voice cold.

"But when we found the body, it was only three to four hours before the deceased's death, and there were no decaying wounds that would take three to five days to form. ”

According to the report of expert Cao, this is also confirmed. Qiu Lan frowned thoughtfully, constantly analyzing all the facts of the case in her mind and reorganizing the case.

"The oil drum in which the body was found was filled with gasoline and was also saturated with 2 per cent bil hydroxy hemster. This substance can keep warm, has high strength corrosiveness, and can achieve the effect of disturbing our vision. ”

"For example, it interferes with our judgment of the time of death, erodes some small marks, for example, the dander left on the body by the murderer. ”

Qiu Lan pursed her lips lightly, and the expression on her face looked a little heavy.

A strange oil drum appeared at a garbage disposal site with an extremely complex environment, and the Forensic Section tested more than 400 items, none of which were related.

And this case is so strange, if it wasn't for the staff to find it by chance, this body might have been lost in the sea.

The modus operandi is so detailed, and the killer also knows how to use a niche chemical to interfere with the police's sight.

This is definitely not a simple homicide, but a murder, a well-planned murder.

And the murderer behind this must be a very terrifying person,

She had a hunch.

The atmosphere of the meeting reached zero in an instant.

The case looked a little tricky, and everyone present felt an invisible pressure.

"One more point. Mo Heng put down the pen in his hand and slowly stood up, his eyebrows sharp, "The blood stains on the copper wire with green copper oxide we found at the scene are indeed not the deceased, but they are related to the deceased. ”

She switched the projection screen to the DNA comparison chart and said indifferently.

"The two DNA images are fifteen pairs identical, and the blood stains on the copper wire are XX chromosomes, which means that they are the biological mother or biological sister of the deceased. ”

Hearing her words, the members of the serious crime team all looked at each other, and a trace of doubt flashed in their eyes.

"But. Xu Chengyan stood up, his brows furrowed, "In the information we investigated, the deceased's mother and death have passed away, and my sister also has alibi." ”

Another mystery!

The meeting lasted less than 40 minutes, and the progress of the case was basically difficult.

Qiu Lan lowered her eyes, her eyes flowing, and her mind kept thinking.

"Actually, it's not completely impossible. She raised her dark eyes and looked at the people in the conference room with heavy eyes, "Officer Xu, the appearance of the copper wire does not necessarily mean that the murderer killed someone, it may mean that the murderer has been there." ”

In a word.

After hearing her words, everyone present nodded silently in agreement.

Xu Chengyan, who had fallen into the mystery, suddenly brightened, his eyes flashed slightly, "What Doctor Qiu said is, Zhigao, Xiaotiao, our next investigation direction is to be placed in the place where the deceased and the deceased's sister may go." ”

Qiu Lan's words dragged the whole case out of the mud and took it in a new direction.