The traces of existing footprints covered at the site are not such large flat coverings, but pure footprints.
Lu Chuan lay on the ground and continued to observe. Could it be that the other party really floated in?
Impossible.
The suspect has messed up the house like this, there is no way he has left no trace at all.
From the living room to the bedroom, Lu Chuan paid close attention to every detail, carefully observing every small difference on the ground.
"Brother Hui, I have a variable frequency laser spectrum analyzer in my car. Please help me get it."
Lu Chuan seemed to have made some discoveries, but he was a little unsure. Many details were not very clear under natural light.
“Okay, wait for me for a while.”
Ten minutes later, Lu Chuan got the spectrum analyzer and closed the curtains in the room. The light suddenly dimmed.
After turning on the spectrum analyzer, Lu Chuan adjusted the laser frequency and irradiated it onto the ground. Suddenly, dense footprints appeared vaguely.
Yuan Shaokang, who was watching on the sidelines, was stunned for a while. Is the current criminal investigation technology so advanced now?
But after a while, Lu Chuan turned off the light source.
"Captain Yuan, we can't do it now. The light is still a bit strong with the curtains drawn. Let's come over at night. I feel something needs to be confirmed."
"No problem, but ...Lu Chuan will have to trouble you to work overtime.”
“What’s the point of working overtime? In our line of work, what days don’t you work overtime?”
"Don't move at the scene yet. If I can confirm my thoughts tonight, I think we can almost solve the case."
Lu Chuan didn't go into too much detail, because what he just saw was not realistic and there was no conclusive evidence.
On the way back to the detachment's car, Zhang Hui couldn't help but be curious: "Brother, what did you just find?"
"Nothing, just the footprints at the scene, the footprints left by the owner's family. , I looked at them all and saw that they were all from wearing slippers.”
“There are three pairs of slippers in total, and they are all placed in the closet at the door. I took a look and found that the shoes were relatively new and the marks were very clear. .”
"But there are some marks on some of the footprints. They are very slight. I can't figure out how they were formed. If I use a laser to illuminate them at night, I can see them more clearly."
Zhang Hui felt lonely after hearing this. Don't quite understand.
If it was fingerprints, he could still add a few words, but the footprints...
Lu Chuan first sent Shen Yan home when he got off work. It was not dark when he got off work, so he went now It's no use there either.
Then we went home and had a meal, and the sky turned completely dark.
Without going back to the detachment to ask for a car, Lu Chuan drove his own car directly to the High-tech Zone.
It happens to be a little closer.
When Lu Chuan arrived, Zhang Hui and Yuan Shaokang were chatting.
“I suggest we focus on investigating the residents in the building.”
“Since the suspect did not enter or leave the unit through the door, it must be someone in the unit who did it.”
According to normal thinking and logic, this is indeed the case.
There is one exit on the top of the entire building and one on the bottom. There are people living on the roof all the time. It is impossible for the suspect to leave through the roof without alerting the residents on the roof.
The High-tech Zone Criminal Police Brigade has already conducted an investigation into the monitoring of the unit door.
During the time when the crime occurred, the only people who entered and exited the unit were the owners and the delivery people. Then there were two relatives of the owners who entered and exited the unit. No other strangers entered or exited.
Leaving aside the owner, the people who delivered the food took less than three minutes to enter and exit. It was impossible to complete the theft in such a short period of time.
Therefore, the theft suspect most likely lives in the unit and goes home directly after completing the theft. "The truth is this, but it is impossible for us to search all the residents in the unit building, and the owner's lost cash has no special mark. Anyone can have 10,000 yuan, and there is no way to lock the other person."
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“Those gold jewelry may be locked by then, but how can we search for such a small thing?”
Don’t say that a theft case is a murder case. Without clear evidence, Under such circumstances, it is impossible for the police to randomly issue a search warrant and enter someone else's house to search.
"That's right..."
"Hey, Lu Chuan is here."
Zhang Hui waved, and the spectrum analyzer was placed in the room in the morning, so there was no need to move it back and forth.
Now that the sky was completely dark, and the curtains were closed, the lights of other residents had no effect. Lu Chuan turned on the spectrum analyzer and shined it on the ground.
The image was much clearer than the daytime image. The dense footprints seemed to be sprinkled with fluorescent powder. Under the laser of a specific frequency, they stood clearly in front of the three people.
“Here!”
Lu Chuan's conjecture has been further confirmed.
Some of the footprints have dot-like marks, like a bald spot on the oasis, very obvious.
“What is this?”
“The suspect’s footprints.”
Huh?
Lu Chuan squatted next to a bald spot, took out a camera and started taking pictures, as well as some cotton swabs for collecting trace evidence.
While operating, he explained: "The suspect is very smart. It's not that he didn't leave any footprints at the scene, but his footprints are different from the general footprints."
"He should Something like stilts was tied to the feet, leaving these dot-like marks on the ground.”
Walking on stilts?
When Lu Chuan said this, Zhang Hui and Yuan Shaokang understood.
"And the high-strength gel found on the door lock this morning is generally used by magicians."
"Team Yuan, are there anyone in this industry in this unit or community?"< br>
"As for this, I haven't done any early investigation in this area, so I'm not sure."
With the discovery, Lu Chuan quickly completed the collection of spot marks.
“Give me some time. The footprints left by this kind of dotted marks can only roughly determine the weight of the other party. I will go back and do a trace evidence analysis to see what the object tied to the other party’s leg is. What, check out similar practitioners here, and we’ll have a look at them then.”
"Okay, I'll make arrangements right now."
Walking on stilts is not something ordinary people can do and requires a lot of practice.
Being able to flip around indoors on stilts is not something that ordinary people can do, and beginners will most likely not be able to do it.
The most difficult thing about walking on stilts is not to stand up and walk, but to bend down and do some large movements.
The stilts the suspect wore indoors were definitely not particularly high. They were probably just to cover up his footprints. But even if they were not high, they were not his own feet after all.
Therefore, Lu Chuan suspected that the other party might be a professional.
Lu Chuan did not waste time and returned directly to the Criminal Investigation Detachment.
The stilts the other party stepped on were not made of metal, otherwise they would have left scratches on the marble floor. Judging from the size of the marks, they should be some kind of wood.
Lu Chuan collected some trace substances to see if he could analyze the active ingredients.
The rest is the analysis and identification of the stains.
Because the material of the stilts is not metal, when it touches the ground, the size of the marks formed will be slightly different due to changes in the direction of force and center of gravity.
Lu Chuan now needs to roughly analyze some basic information about the suspect through calculations. (End of this chapter)