National Forensic Doctor

After Jiang Yuan walked a large circle in the park, he also walked several roads outside the park.

Qiu Li insisted on following, but when he walked straight his feet became weak, and when he instinctively wanted to give up, he saw the long and straight female doctoral student next to him still walking fast, so he regained his strength.

Walking to the back, Qiu Li started to feel happy. Since she passed the public examination, she has basically lost the joy of working hard and breaking through herself.

Sometimes, after a long period of leisure, no shortage of money, and no burden, I can eat whatever I want, play whatever I want to play immediately, and go wherever I want to play immediately... After that, even if I just find a way to work hard The directions are all very valuable.

"That's almost it." Jiang Yuan looked around and asked the criminal police from Luojin City Bureau to help collect surveillance videos.

There are a lot of surveillance cameras in the surrounding area. Public agencies can coordinate their construction after approval, but there are actually more private cameras. Among them, the cameras in shops, shopping malls, parking lots, and various public and private units are quite relevant. Other cameras, such as those on trams or private homes, are much more troublesome to find, but everyone is a camera and should be equal.

The most important thing is of course that the task force has enough manpower to fight such a wealthy battle.

Watching other police officers searching the shops along the street one by one, Jiang Yuan turned to Pang Jidong and said: "Let's go to the picture investigation team first, and send the collected videos for synchronization to see if we can find the murderer." "The body transport vehicle."

Over there in the film and television city, moving corpses several hundred meters is already an exaggeration. Moving corpses out in the park here would be too tiring. It is an impossible task based on human power alone, so transportation is necessary.

A criminal policeman who came with Pang Jidong was also following him all the way and couldn't help but join in: "It's not necessarily a corpse transport. If the victim was threatened, he might also come out with the murderer. In this case, they There are more routes to choose from..."

"Impossible." Jiang Yuan denied it for the first time, and then said in a harsh tone: "The pollen on the victim's body is also layered, such as a large number of clover pollen, and the corresponding pollen map. It means what happened to him in this park, if he could have normal contact with the outside world, there should be more pollen of other types on his body..."

In order to explain, Jiang Yuan once again organized his language and said: "Based on the spores on the victim's body, it is basically certain that he was killed in the park and was carried out."

"Then you can look for people who often come to the park and see if they have seen people being carried or carried on their backs." Pang Jidong took the words and gave a suggestion that was not a suggestion.

Jiang Yuan nodded: "You can ask, let's go to the Scout Brigade first."

The uncertainty of interviews is very high, and many cases are solved through interviews. This skill is a criminal police skill, so there is definitely no problem in continuing to do it.

However, even if the suspected target is visited, follow-up criminal department technicians will still be required to cooperate. For example, if the murderer is identified through the surveillance cameras in the park, if the murderer avoids the surveillance cameras in the park, a criminal sketch may be needed to draw the murderer's appearance.

Alternatively, it may be more conducive to the investigation to reduce the workload of the criminal police through interviews, such as determining the direction of the murderer and knowing which direction he is walking.

However, given the current abundant resources, the task force’s demand in this area is actually not strong.

In other words, even if some information can be obtained by interviewing grandparents or dog owners walking in the park, the task force still prefers a more complete investigation.

As far as Jiang Yuan is concerned, although the cameras in the park are not working, the vehicle checkpoints leaving the park are complete.

This means that any vehicle leaving the park will basically be caught on camera.

Today's provincial capital cities basically have this configuration.

People don’t need to take the usual route. There are only a few lanes. If you have a photo reconnaissance team, you don’t need to add too much cost by sorting out the cameras in the city. Then you can just take photos. With the current level of technology, the cost of storage has long been ignored by the police force.

Jiang Yuan gave the order, Mu Zhiyang whined twice on the intercom, and Coster soon stopped.

Jiang Yuan and others got on the bus one after another, and Qiu Li quickly followed.

Mu Zhiyang was stunned for a moment, stretched out his hand to block the car door, and said, "You are from the Park Management Office, so you don't have to follow us."

Qiao Shengli in the car smiled slightly and flicked her long, straight black hair with her hand.

Qiu Li felt like his chest was about to burst. He was filled with enthusiasm and intelligence, and said, "Don't you want to see the surveillance videos around the park? I'm very familiar with the area around the park. I've walked the roads here often. , and also participated in the transformation of the city management department..."

The latter qualification made Jiang Yuan raise his eyebrows: "Let her come up."

Jiang Yuan agreed, and the others naturally didn't have much to say.

Luojin City Picture Scout Brigade.

On the large screen on the front and the small screen below, dozens of surveillance videos are broadcast simultaneously, Jiang Yuan...

Jiang Yuan naturally couldn't see it either.

But the biggest difference between police and criminals is the large number of people.

Even a policeman like Jiang Yuan, whose skills can be crushed by a single use, will not really use a single skill. In fact, Jiang Yuan's current basic configuration for detecting a case is already a dedicated case team of more than 30 people who graduated from a specialized police school with more than five years of experience, and a team of more than a dozen Ningtai County natives with an uncertain number of people. Senior criminal police, as well as a criminal police team of about 20 people from the local area where the crime occurred, as well as the respective criminal science and technology centers of the two places.

And this is just a standing force. When needed, Jiang Yuan will often mobilize hundreds of regular police teams, as well as pikemen with live ammunition, as well as vehicles and even business jets equipped with these personnel. The cost is even more difficult to calculate.

Even Liu Jinghui, who is the most particular about fighting wits and courage, it is not enough for him to lead a criminal police team.

Jiang Yuan will not be polite to criminal suspects now.

The entire picture detective brigade police officers at home have been assigned one or several screens and are working hard to read.

Speaking of which, there are many techniques for viewing surveillance videos, especially wide-angle surveillance. The distortion of people in different positions will increase, and it takes a while to get used to it before you can better identify it.

Jiang Yuan kept participating in the synchronization of the video.

This is where picture scouting becomes more troublesome. The range seen by one camera is limited, but the other camera may not be able to connect seamlessly. In other words, even if it can be connected seamlessly, if you want to accurately transfer from one camera to another, It also requires a little bit of brainpower.

There's no help from a film editor here, and many of the image changes feel like they've been montaged.

What the criminal policemen of the Picture Detective Brigade wanted to see was the scene of the murderer or murderers coming out carrying or hiding Zhang Lei’s body. However, after watching the surveillance for several hours after Zhang Lei appeared, no one found it. Such images.

Everyone couldn't help but look at Jiang Yuan.

"In terms of time, the murderer should have driven to Lanyue City non-stop when he killed Zhang Lei. It should have taken about a day on the road. However, the investigation in Lanyue City showed that there were not many A car from Baijiang Province arrived over there." Jiang Yuan looked at Liu Jinghui and said, "So, the murderer probably changed his car?"

"It's also possible that the license plate has been changed." Liu Jinghui said: "The deck car is more convenient, as there is no need to move the body. In addition, changing cars in the middle always requires a car, which requires preparation in advance, which is a little troublesome."

"If the deck is well set, even if it's just the make of your own car, then it's basically impossible to check." The captain of the detective team said. The graphic investigation team also often handles cases in this area and has rich experience.

Liu Jinghui nodded: "Then do a hard job. Just look at the car model and color, not the license plate. Look at how many overlapping cars there are between the Lanyue City Film and Television City and the Luojin City Park. Well, you can connect them. Don’t even look at the color, just look at the model..."

"Then there's a lot of overlap." The captain of the picture scout team said with his fingers: "The three big moms on the road are the Japanese Accord, Camry, Teana, Sagitar, Bora, Passat... Oh, and Wuling Hongguang... cars There are only so many models on the market. If you want to identify the specific generations of these cars, it is too much work... Otherwise, scan the software first and see if you can jump out directly. "

"You can also scan it with software." Liu Jinghui did not completely deny it.

There are many types of image detection software, but they are all based on image reading, so the accuracy is never too high. It's more than enough for general public security work, but it's disturbing for solving this kind of murder case.

At this time, Jiang Yuan looked at the ever-changing surveillance video in front of him and said slowly: "Since we are talking about hard work, either way, after Zhang Lei appears, pull out all the vehicles that have appeared in the surrounding area within 12 hours to see if they have left the city. Yes. The murderer killed someone, so he wouldn’t change his car if he already had transportation.”

"That's not necessarily true." Liu Jinghui objected, and said seriously: "Maybe he was driving a tram when he committed the murder. It's also possible to switch to a gas truck specifically for high-speed driving."

Qiu Li was listening with wide eyes in front of him. When he saw Liu Jinghui retorting to Jiang Yuan, he couldn't help but said: "This won't work, that won't work either. There are so many of you, so just try every method."

"Do you know how much it will cost to try them all and how many people will be used?" Liu Jinghui laughed.

Qiu Li pouted: "I don't care about that much, I just want the results."

Liu Jinghui was stunned after hearing this for a while, and then said: "You little girl, you have exactly the same idea as the leader."