National Forensic Doctor

Didi…

The modified lift, while shouting, lifted Jiang Yuan to a height of 6 floors so that he could observe the outer wall more easily.

If this is in a county or prefecture-level city, the police station will most likely borrow the fire truck of the fire department, but in wealthy police stations like the Beijing Police, professional lifts are also available. The characteristic is that the car body can be painted with its own skin.

Jiang Yuan was lifted by a lift and slowly descended from the top floor. Cui Qishan and Xiao Si were beside him and helped.

As the lift kept making its "tick-tick" sound, Xiao Si beside him couldn't help but ask, "Why did we always use ropes to hang down from above before?"

"Because it's too troublesome to borrow a car from the Municipal Bureau." Cui Qishan said as if it was a matter of course, then looked at Xiao Si's unhappy expression and said, "If you are not satisfied, you can borrow it next time."

"They hung up on me." Xiao Si pouted: "If I had a title of captain or something, I would have borrowed the car a long time ago."

Cui Qishan stared at Xiao Si with a look that made people feel depressed: "You mean, I, the captain, am just a dead eater?"

Xiao Si: "This is not the first time I've said this. Of course, the words I use may not be as sophisticated as yours."

"Do you know how to use honorifics now?" Cui Qishan raised his hand, then put it down and said, "If I don't slap you, we will be laughed at by the people below if we stand so high up."

"It doesn't matter." Xiao Si's tone was filled with a hint of suicidal intent: "We will be laughed at for a long time."

"Next one." Jiang Yuan interrupted their bickering. Cui Qishan then realized that the lift had landed on the car, and the vehicle began to move. After it was in place, it lifted the three people up again.

Jiang Yuan looked at the wall, and occasionally turned his head to look around, especially the greenery on the ground and the road outside the wall.

"It might be faster to lower the rope." Jiang Yuan looked at the slowly changing wall, feeling a little bored. The wall without any traces looked like a fake antique, and you could tell it was nothing special at a glance. However, the speed of the lift was there, and most of the time it was equivalent to waiting.

However, it is also necessary to take time to check the greenery and the roads outside the wall. To some extent, on-site investigation is to analyze the criminal's psychology. You have to guess how he walked, so that you can do more detailed inspections at key points during the investigation.

The highest point of this model is the reconstruction of the crime scene, which directly simulates the criminal's activities in a certain space. Of course, this model has very high requirements for evidence. It is an advanced skill of bloodstain analysis because only a large amount of blood can provide so many clues such as footprints, fingerprints, palm prints, tool marks, etc.

Cui Qishan didn't understand Jiang Yuan's thoughts, and only showed respect: "The rope is very tight, and most people can't stand it if it's done for a long time."

Xiao Si sneered beside him, and muttered to himself in a voice that only Cui Qishan could hear: "We are not considered human beings."

Cui Qishan actually had a high tolerance for Xiao Si. As long as he didn't affect other people, he would let him talk. As a criminal policeman, he could communicate with an informant who was unconscious due to drug use. What was a foul-mouthed colleague? Besides, Xiao Si was still useful.

Cui Qishan turned around and said, "How about this, you also have a camera with you. Don't wait for Captain Jiang to find any traces. Just take pictures of the walls we pass by based on the speed at which the lift descends. Go back and sort them out and mark them so that Captain Jiang can find and compare them later."

"Then you can go and shoot with the rope." Cui Qishan gave a reasonable solution.

Xiao Si's face turned green. "You don't want to use the lift? I'll wait until Captain Jiang uses it up before I get more."

"You haven't remembered Director Jiang's habits at all. After Director Jiang finished the investigation, he would analyze and compare. You couldn't produce photos at that time, so you drove the lift to take pictures? What a waste of time! I'll have someone prepare the lifting rope now, and you will go down and take pictures of what you missed. Increase the speed of the lifting rope so that you can catch up with us." Cui Qishan arranged everything for Xiao Si in an instant.

Jiang Yuan agreed in his heart and inexplicably thought of Shen Yaowei. Of course, Shen Yaowei spoke much better than Xiao Si, but he still needed practice to do things.

The lift went down and up again, painting the walls of Avi's apartment one by one.

The reporters below also craned their necks to look, taking pictures from time to time, but soon became bored.

Watching on-site investigations is boring in itself. Some experienced people may have seen on-site investigations by criminal police. If they don’t know much about it, it will feel like they are doing foreplay in the room, touching and rubbing without knowing what they are busy with. But if you are knowledgeable and know where the erogenous zones are, you will often smile knowingly.

"Stop for a moment."

When the lift rose to the second or third floor, Cui Qishan finally heard the sound he wanted.

Jiang Yuan raised his hand to stop the operation, which meant the case was solved.

Cui Qishan's standing posture changed from standing at attention to at ease.

Jiang Yuan had no idea what Cui Qishan was thinking. He just looked at the marks on the wall and started sprinkling powder.

The marks on the wall are more difficult to preserve than the marks indoors, so they are not very obvious, especially the marks on the dry-hanging stone are less likely to show.

On the other hand, the multi-band light source that Jiang Yuan now uses more frequently is not suitable for use on a small lift under daylight. In the end, the most traditional powder is still the most useful.

By sprinkling the powder here, you can see less obvious scratches and wear. Xiao Si, who has already returned, hurried to take pictures, while Jiang Yuan paid more attention to the position, direction and depth.

This is above the second floor and below the third floor of the apartment, but Jiang Yuan only saw traces of hands and feet, but no traces of tools. Looking more carefully, the traces in front of him were all downwards, and there were no traces of climbing upwards.

In this case, the murderer either used another way to go upstairs, or took two routes to go up and down the stairs respectively.

"Judging from the traces, the murderer fell from the rooftop and did not go through other windows." Jiang Yuan said as he recorded.

"Is there no insider in the apartment?" Cui Qishan asked.

"This is the route of departure, which means that when he left, he came out of the victim's house, reached the rooftop and climbed down. But we still have to wait and see how he got in." Jiang Yuan shook his head slightly.

Cui Qishan frowned: "Why don't you just leave Martina's house? And come out to the rooftop again, it's a bit redundant."

"If you go out from Martina's window and then walk down, you will pass by other people's windows. In addition, this climbing route is probably not easy to climb. It is better to go down from the top floor and choose a wall with an outer edge... For people who are good at rock climbing, this route should be easy to go down to the sixth floor."

Jiang Yuan had already thought about this question and answered it quickly.

Cui Qishan raised his eyebrows: "The murderer is a rock climbing expert?"

"It's very likely. He climbed up with his bare hands." After Jiang Yuan finished looking at the wall, he jumped off the lift and looked at the ground.

"The floor is cleaned every day." Cui Qishan reminded quietly, "After the incident, the outdoor cleaning of the apartment has not stopped. They outsourced it to a cleaning company, and the cleaning company is paid by the time. We only stopped it yesterday."

"There are no traces on the ground, but there is a depression on the lawn next to it... The criminal climbed down to the second floor and jumped down directly..." Jiang Yuan directly stated the result of his observation without any further reasoning.

Xiao Si said with a click of his tongue: "Jumping down from a height of four or five meters? Doesn't it hurt your feet?"

Jiang Yuan wiped his hand and continued, "From what we can see so far, our suspect is a rock climber. He climbs barehanded. Judging from the distance of the climbing points he chooses each time, his arm span is more than 9 meters and he is tall. In addition, the suspect has a certain anti-reconnaissance ability. He not only cleaned up some traces in Martina's room, but also cleaned up traces on the rooftop."

After Jiang Yuan said this, he signaled the lift to continue moving forward. He had not yet finished looking at the facade of the apartment building, and had not found the route to climb up.

However, there were only so many areas left, so Jiang Yuan let Cui Qishan go and took Xiao Si and Wang Chuanxing around. He was no longer in a hurry.

After going up and down three more times, Jiang Yuan saw another climbing route. This time it was in the northwest corner of the floor, still requiring free climbing.

Looking at it again now, Jiang Yuan instantly understood why there were two routes, because the requirements for climbing up and descending were different, and the suspects obviously chose the easiest route.

Similar to the previous route, the suspect also chose to climb to the rooftop on this route.

After Jiang Yuan came to this conclusion, Cui Qishan couldn't wait to say, "Did the suspect trick the door open? I have a suspect! Martina has an ex-boyfriend who works in a private company in Shanghai. He likes rock climbing and has been participating in various free-hand climbing activities for a long time!"

"No exit allowed, bring people back!" Tao Lu didn't even ask about the motive. At this time, the motive didn't matter!