"Hey, there's groove mud around the dotted shoe print?" Lao Xian pinched a clump of blue-gray semi-solid soil with his hand and rubbed it back and forth in his hand, and a foul smell came from his fingertips. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Zhang Mengqi also put the tip of her nose forward and sniffed it.

"Well, it's ditch mud." Zhang Mengqi didn't explain too much, walked up to the unkempt scavenger and asked, "Uncle, let me ask, did the person who snatched your clothes yesterday wear a coat?" ”

"No, he wants to wear a coat, and what is he doing with my padded jacket?"

"What kind of padded jacket, can you describe it?" Zhang Mengqi lowered her voice.

"The red one, the one with the white bar, I just picked it up from the trash can a few days ago, and before I was willing to wear it, I was snatched away by this little king and eight lambs." The scavengers were furious.

After hearing this, Zhang Mengqi turned to Xiao Jiao and said, "You now contact the people of the criminal police team, according to the clothes described by this old man, let them call up surveillance along the perimeter, and they should be able to find the traces of the suspect." ”

"Understood."

After speaking, Zhang Mengqi turned on her mobile phone and clicked on Google Maps, a small circle flashing blue dots was displayed on the map, and the location marked by the circle was the geographical coordinates where it was located.

"The place is so dilapidated, not many people usually come over, and the mud on the spikes is obviously brought by the suspect. As I thought, it is likely that the murderer ran to a nearby pond to wash the blood off his body after committing the crime. ”

Speaking of this, Zhang Mengqi suddenly paused for a while, and then he made a widening gesture on the mobile phone screen with the thumb and index finger of his left hand, and then said with certainty: "The nearest man-made pool is six hundred meters southeast of the crime scene, and the straight-line distance to us is no more than fifty meters, the weather is so cold, the suspect is wet, he shouldn't be able to run far, let's go and see." ”

They jumped into the car, and the engine barely had to turn twice before they reached their intended target.

The man-made pool is not very large, only a dozen meters long and wide, surrounded by several sparse farmlands, and there is no sign of reclamation in the farmland.

This phenomenon is very common, and these lands are basically bought by developers to prepare for the construction of communities, but due to various reasons such as the rupture of the capital chain, they can only be deserted here.

They walked around the man-made pool and soon found a place where the earth had collapsed badly.

The old man rolled up his sleeves, put his hand into the cold water, pulled out a piece of blue-gray mud from the man-made pool, put it on the tip of his nose and sniffed it, and then said with certainty:

"Mengqi, that's the smell, it's the same as the one on the suspect's shoes."

"What? Brother Xian, can you smell this? Zhang Mengjiao felt a little incredible.

"It's not just about smelling, it's about observing." Lao Xian put his mud-stained hands into the water and shook them a few times, explaining,

"It's stagnant water, and the mineral composition in the pool is stable, so the color of the soil doesn't change much, which is one thing. Second, the smell of the soil varies depending on the degree of water pollution. For example, the soil of a pond built near a fertilizer plant has a pungent sulfide smell instead of the normal rancid smell. There are usually no people here, so I can be sure of my judgment. The old man shook off the water in his hand and put his frozen red hand back into his pocket.

"Sister, what should I do next?" Zhang Mengjiao glanced at Zhang Mengqi, who was staring at the artificial pool in a daze.

He suddenly came to his senses and looked up at the empty surroundings: "Our inference is correct, the suspect must have blood stains on his coat, and I suspect that he threw his bloody clothes into this pond." Therefore, it is necessary to notify the salvage team to come over and see if there is anything to be found. ”

After speaking, he took out his mobile phone and dispatched the salvage team. After more than an hour of work, more than a dozen professional salvage personnel in full armor stood around the artificial pool with equipment.

A few of them crouched to the side, staring closely at the salvaged objects.

The hard work paid off, and finally half an hour after the salvage was carried out, a white jacket stained with large blood stains appeared in front of him, and a brick was wrapped in the jacket.

As if he had found a treasure, Lao Xian took out a large physical evidence bag from his box and carefully packed his clothes in the bag.

"Now it's a two-step process," Zhang Mengqi began to speak, "Guoxian, you hurry up and extract the DNA from this dress." ”

"Good!"

"The criminal police team called just now, and all the surveillance videos along the way have been transferred, Xiao Jiao, you can analyze the results for me as quickly as possible."

“ok！” Xiao Jiao lifted his pants and replied confidently.

Don't look at Xiao Jiao's fat and chubby appearance, everyone who knows her knows that she is not an ordinary corner. During the entire homicide investigation, she had to record the whole process with her camera; And every physical evidence needs to be photographed and fixed before it is extracted, which is only the first step; Once the photos are taken, they are arranged, trimmed, and categorized in order.

In addition to taking photos, it is also necessary to process video evidence, and in a very short period of time, you have to browse through a large amount of video information, and find the small part of the video that plays a key role in solving the case. Sometimes after watching it for a few hours, the useful place may be a flash of a second. Therefore, without great patience, you will definitely not be able to do this work of light video.

The last technical task is the processing of images, such as seeing a certain license plate number in a video that is not clear, and using professional skills to show the number on the license plate. Of course, this is not absolute, videos with too poor pixels, and there is nothing the gods can do when they come.

Returning to the unit, waiting for a few hours with mixed feelings, Lao Xian's results were the first to be fed back, and two kinds of DNA were detected from the clothes salvaged from the artificial pool, one was the deceased, and the other DNA information was unknown, through the analysis of genetic material, its genotype was XY type, that is, male, if nothing else, it can be basically determined that this is the suspect's DNA.

I don't have a grasp of this unfamiliar DNA, but fortunately, I have a grip now.

At this time, there were several black mobile hard drives in front of Xiao Jiao's computer desk, and video clips with the time and date were dragged into the special player. Looking at the solemn expression on Xiao Jiao's face, he didn't bother her, just added some hot water to her water cup from time to time.

I don't know how long it took, Zhang Mengjiao fell asleep on the sofa in the office, and when she woke up, she was covered with a thick blanket, and Xiao Jiao, who was sitting in front of the computer, was nowhere to be seen.

Just as Zhang Mengjiao was about to get up to look for it, Xiao Jiao grabbed a hard drive and walked into the office.

"What's the situation?" Zhang Mengjiao rubbed her sleepy eyes.

"The video is incomplete, the suspect is lost, I just went to tune up a few more videos to see if I can find out the suspect's complete trajectory." Xiao Jiao said as he connected the hard drive to the computer, and the computer's stereo made a "ding dong" sound.

"You can sleep for a while, and I'll call you when you eat." Xiao Jiao smiled at me.

"Forget it, the case can't be solved, and I can't sleep well." Zhang Mengjiao said,

Xiao Jiao's attention was quickly attracted by the surveillance video again, and he didn't pay any more attention.

Time passed minute by minute,

"It's broken!" Xiao Jiao screamed miserably.