Chapter 696: Finding Traces

The red light spot had strong penetrating power. Looking out from the darkness, the field of vision immediately became trance-like.

Liu Cheng covered his eyes and waved his flashlight twice, and the red spot on the opposite side moved.

"There are too many cameras. I don't know if I thought I was locked by a sniper." Liu Cheng walked to the door and couldn't help complaining.

"More evidence is not a bad thing." Liu Jinghui agreed with Tao Lu's arrangement. Although it might not be of any use at the court stage, it really has meaning for the "mountain" in the iron evidence like a mountain.

Liu Cheng muttered, and didn't really want to oppose anything, but stood there a bit dull.

Basically, there was nothing for him to do. This place was remote, and it was impossible to go back, so he could only guard it.

Liu Jinghui walked up and down, and his inspiration was bursting in his mind, so he stood beside Liu Cheng and thought hard.

Looking at the two people from the opposite side, I only felt that their eyes were out of focus, but one person's brain was turning frantically, and the other person's brain was lying flat.

Jiang Yuan walked through the three floors first, then returned to the first floor, and began to change clothes and gloves.

Liu Cheng seemed to come alive at this time and asked hurriedly: "How is it?"

"There is a lot of evidence. The evacuation was not hurried, but there was not much systematic cleaning of the evidence." Jiang Yuan said and looked at Liu Jinghui.

Liu Jinghui was also activated instantly, frowning: "Then it shows that this place is likely not the first scene."

The water entry point of the victim Zhang Lizhen was nearby, and the spore information on her body also showed that she had entered this courtyard, but this does not mean that Zhang Lizhen must have died in the courtyard.

It is possible that she died outside the courtyard, or it is possible that she died on the grass outside, under the trees.

Judging from logical reasoning, the police followed Zhang Lizhen's corpse information to this courtyard. And such a good courtyard with clearly not low costs was abandoned, and the time calculation was close to Zhang Lizhen's death time, so Zhang Lizhen's death must be related to the courtyard.

And judging from common sense, in this case, if Zhang Lizhen died in the courtyard, doing a cleaning to remove evidence is the most normal train of thought.

Therefore, the lack of cleaning traces in the courtyard shows to a great extent that the first scene is not in the room, making cleaning unnecessary.

Of course, there is another possibility, that the person in charge of the courtyard didn't know that Zhang Lizhen died. But judging from common sense, it is hard to believe that such a remote and special courtyard, the person in charge's control ability would be so weak.

On the other hand, even if the person in charge of the courtyard didn't know that Zhang Lizhen died, and thus didn't clean the courtyard, the murderer should return to the scene and do a cleaning.

Liu Cheng also came back to his senses, thought for a while, understood, and asked further: "Actually, even if this is not the first scene and nothing happened, isn't it normal to clean it?"

"You asked a very interesting question. The person in charge had time to take away things like picture frames, why didn't they clean the room." Liu Jinghui paused and said: "It's nothing more than two reasons, either they feel it's unnecessary, or they feel it's necessary."

"Unnecessary to clean? Someone died, this reason is obviously inappropriate." Liu Cheng said.

Liu Jinghui nodded.

Liu Cheng continued: "Necessary means that the person in charge felt it was necessary to leave evidence?"

Liu Jinghui nodded slowly: "That's the only way to explain it."

The two said and looked at Jiang Yuan. They showed reasoning here, but the truth, in the final analysis, requires evidence to support it.

Jiang Yuan beckoned a police officer with a camera, brought another scene investigator, and began to investigate in order from bottom to top.

"Take the footprints on the ground first." Jiang Yuan asked people to turn on the investigation light, and then took the footprints one by one.

Soon, the dark room was lit up with investigation lights.

As far as the current situation is concerned, Jiang Yuan believes that the value of footprints is very large.

Footprints can not only judge a series of identity characteristics of the personnel at the scene, but most importantly, they can see whether there are situations such as fighting, resistance, dragging, etc. at the scene.

People are easy to die but difficult to kill. Even if the deceased is a female, it is not easy to kill her cleanly. Although the previous reasoning discussion has tended to the first scene not being indoors, it still has to be seen to count.

Moreover, behaviors like fighting and dragging are seen because they are different from usual and are relatively intense activities.

For Jiang Yuan, as long as there are footprints, not-so-intense activities can actually be seen.

He has now turned on the "Crime Scene Reconstruction" (temporary +1) skill, which is equivalent to the LV5 crime scene investigation, and at the same time, has a more advanced special item equivalent to LV6 crime scene reconstruction.

At this level, as long as you are willing to invest time and energy, you can not only see how the owner of the footprint walked and where they walked, but even see what the actions of the footprint owner were before and after landing.

A simple example is that when twisting traces appear on the left and right of a footprint, it means that the owner of the footprint might have turned.

Many human actions require a landing point to exert force. As long as the ground conditions are good enough, these can be seen. And the closure of this courtyard for more than a year, the accumulated dust, instead became favorable for footprint identification at this time.

Jiang Yuan and others first laid boards to collect and record the footprints layer by layer.

At the same time, while others were taking footprints, Jiang Yuan did another round of analysis, then circled around a few footprints, spiraling observation.

Thus, some hair or dander was picked up, which was also marked and photographed separately.

For Jiang Yuan, this scene investigation itself has no difficulty, but organizing it well, not only having organization in the investigation stage, but also providing strong evidence support at any time in the later investigation stage, and even the litigation stage, is the most difficult place.

It is conceivable that the number of people who originally lived or came and went in this house was very large. It will not be a small workload to dig them all out, efficiently and orderly.

Three floors, circling up layer by layer, and taking evidence down, it was already dark.

Footprints were taken, fingerprints were taken, and various traces were classified.

Normal scene investigation actually wouldn't do this. Usually, it just takes key fingerprints and traces in key positions.

Otherwise, this electronic era would be fine. If it were 20 years ago, when paper materials were popular, the volume of evidence would become a problem.

The scene this time is different. Including Tao Lu and others, they all tend to obtain as much evidence as possible, and at the same time lock as many personnel as possible.

This went on until the night, and most of the scene investigation work was completed.

Compared with the situation indoors, there were no valuable clues in the courtyard. The more than a year in the forest is completely different from the more than a year in the city.

With numerous microorganisms and all ecological niches filled, it is difficult to find fingerprints and footprints in the courtyard. Not to mention using them to prove anything.

"Branch Chief Tao, the scene investigation is completed." When Jiang Yuan took off his gloves again, the sky was already dark.

"Is the fingerprint identification and footprint identification work also handed over to you?" Tao Lu added.

Jiang Yuan nodded: "Can do."

"Good, then I'll let the dogs in."

Forensic Pathologist Jiang nodded again.

Tao Lu took out the walkie-talkie and said: "Let the dogs in."

Several sturdy police dogs immediately appeared in front of Jiang Yuan and others. ===== CHAPTER 697 =====