Fifteen minutes later, Zhou Qianxin and Cheng Wei arrived at the scene, and Cheng Wei also brought two trace inspectors.
Zhou Qianxin glanced at Yu Chen and the others, and asked curiously, "Why didn't you enter the scene and stay here?"
"Waiting for you and Lao Cheng."
Yuan Youchong shrugged his shoulders and said: "The significance of this scene to us is only to be able to further determine the identity of the murderer, and it does not allow us to directly find the perpetrator, so we are not particularly anxious, let's wait for you professionals to arrive." ” "It's eleven forty."
She looked at her watch and said, "If the murderer strictly follows the law of killing people every 48 hours, I'm afraid we won't have more than an hour and a half left." ” "However, there is no evidence that the murderer is a person who strictly follows this rule, and besides, our action is likely to have a certain irritating effect on the murderer, and even provoke him, if they have already locked up the next victim and successfully abducted him, the victim may be killed at any time."
"I know."
Yuan Youchong nodded.
"I know what you two are doing here" Zhou Qianxin's eyes widened: "Hurry up to your own post, it's okay to leave it to me and Lao Chengcheng here." ” Yu Chen smiled bitterly: "The question is, where else can we go if we are not here" Yuan Youchong also said: "Since this is the scene of the murder, then, even if the murderer temporarily changes the venue or den, it is obviously impossible to be too well prepared, and there is a high probability that it is still in this area, and we can rush over at any time if we stay here." ” As he spoke, he pointed to his ear: "In addition, we are using invisible headphones for multi-line communication at the moment, no matter where we are, it will not affect the command." ” "Come on, then let's go in."
Zhou Qianxin had nothing to say, so she shrugged slightly.
Cheng Wei asked the two trace inspectors he brought to carefully survey the surrounding environment of the scene, so as not to leave any clues, and each footprint was fixed to facilitate subsequent investigation.
These footprints may not help them find the murderer, but when the murderer is caught, and the shoes he once wore are found, they can be used as direct evidence to identify him as having been to the scene.
After the order, Cheng Wei himself stepped into the transfer station with Zhou Qianxin, Yu Chen and Yuan Youchong.
Ji Hongchang consciously led the way in front.
In fact, Ji Hongchang was still a little excited in his heart.
At the grassroots level, there is basically no chance to get in touch with big cases, and occasionally encountering something that has a greater impact or is more challenging, it will also be reported to the brigade by the squadron leader Cai Jiayi, who is eating and waiting for death.
Don't look at Cai Jiayi is only in his thirties, but he has no momentum at all, for fear of doing something wrong, and even more afraid of offending people, he just thinks about peace and stability until retirement, if it weren't for the superiors ordering them to cooperate with the investigation of this case, it is estimated that he would have pushed it all out.
Even, even if his superiors ordered him, he just wanted to work without contribution, so he directly ignored Ji Hongchang's opinion at noon, and it wasn't until Ji Hongchang's successive proposals that he impatiently agreed, and as a result, he found the scene, which made him very stunned.
At the same time, he also regretted it a little, if he had listened to Ji Hongchang's opinion a long time ago, then he would have been able to make a meritorious service, and the credit he picked up, don't do it in vain.
But at this moment, not to mention meritorious service, he feels very fortunate not to be suspended.
Therefore, for most of the year, Ji Hongchang actually didn't learn anything.
Not to mention learning something, it's good that he doesn't have to be affected by such a negative environment.
Looking at the person leading the way in front of him, he seemed a little excited, how could Yuan Youchong not understand what he meant.
Looking at the rest of the policemen who were silent, Yuan Youchong sighed to Chen: "There is a soldier, there will be a nest of bears, look at this squadron stationed in the station, except for Xiao Ji, how can there be a criminal policeman?"
"Let's deal with this matter when the case is solved."
Yu Chen only felt a headache and was very angry, but this was obviously not the time to deal with this matter, so he had to forcibly suppress the anger in his heart.
Soon, Ji Hongchang led them to the deepest part of the stairwell, and after tinkering on the floor for a while, he pulled hard and opened a small iron door.
Yu Chen was dumbfounded, and said: "This entrance is really hidden enough, no wonder the sanitation station has not found anything abnormal for so many years." ” Yuan Youchong frowned and said, "What did the owner of this building want to do, why did he build a basement, and the entrance was built so secretly?"
"If you are interested in this matter, you can look into it slowly when you go back."
Zhou Qianxin raised her eyebrows, then looked at Cheng Wei and said, "Lao Cheng, let's go in together." ” "Wait."
Cheng Wei shook his head and said, "Survey this aisle first."
The murderer's soles are stained with blood, and even if they are roughly cleaned, there may be some residue, and if you can lock the murderer's footprints in the aisle, it will undoubtedly save a lot of trouble. ” "That's right."
Zhou Qianxin's eyes lit up, and she immediately took out a bottle of spray from her forensic investigation box and handed it to Cheng Wei, saying, "Oh, the luminol reagent that was prepared before coming." ” Cheng Wei set up the tripod and fixed the camera on it, then took the bottle, squatted down and sprayed it carefully.
The reagent is extremely sensitive and can detect blood that has been diluted to just one part per million, so even if the killer has washed his shoes after the killing, it may still leave invisible blood footprints on the ground and be detected by it.
When it was in Maoyi Village, it detected the murderer's footprints.
Due to the extremely unstable nature of hydrogen peroxide, it often needs to be provisional.
After a while, the luminol reagent sprayed on the ground reacted.
Cheng Wei was a little excited, and quickly asked people to turn off the lights, and then put the contrast caliper on the side of the fluorophore, and took a few long-exposure photos with the camera on the footprints outlined by the fluorescence.
After filming, he continued to erupt, continued to take pictures, and so on.
Later, he compared the photos and said, "Look at the pattern of the sole."
"It's the same as the outside footprint pattern, it's liberation shoes."
Yuan Youchong came over, glanced at it, and then frowned and said, "It's a pity that because it has been cleaned, it can't completely outline the entire bottom of the shoe, and the degree of wear and tear can't be seen." ” "There is only one group of bloody shoe prints, and the murderer committed the crime alone."
Cheng Wei said: "The size of the shoe size cannot be accurately judged for the time being, but looking at some of the traces outlined, it should be about 41 or 42 yards, and the murderer's height is between 1.7 and 1.8 meters." ” "It's a bit of a big range."
Yu Chen smiled bitterly, turned on the light, and then asked suspiciously: "Old Yuan, don't you suspect that there are two murderers, why is there only one set of bloody shoe prints?"
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