As soon as the two of them finished speaking, Qiao Chuan and Lu Qianqian walked out with disappointed expressions on their faces.
"Captain, I didn't find anything. I checked all the sewer openings in the bathroom with a soft hook, but I still didn't find anything. The suspect should have disposed of the body and washed it with a lot of water. In addition, he should have used anticoagulant.
I used some reagents and white vinegar to remove traces, and I got the result after using some reagents.”
Qiao Chuan took off his clothes while talking to Du Dayong.
"Captain, I didn't find any traces in the kitchen. The suspect treated almost all the scene with white vinegar. Not only to eliminate the smell, it is impossible to leave any traces."
Lu Qianqian also said with a bitter look on her face.
"Don't worry, take a rest. We have to conduct three inspections at both sites today. As long as we can find even a little bit of new clues, it's worth it. But it doesn't matter if we don't find any. At least we have an idea of the suspect.
He is also a master at on-site handling, even better than some of our technical investigators."
The two of them also wiped the sweat from their heads and nodded.
At this time, Li Shuangkang was also busy helping Du Dayong check the water and electricity problems. He said goodbye to Du Dayong directly, saying that he would go to Du Dayong after dinner in the evening.
The three people continued to change scenes and arrived at the residence of Jiang Yan and Liu Siqi.
"Still the old rules, my living room and yours are two rooms."
Du Dayong said to Qiao Chuan and Lu Qianqian while putting it on.
"I understand, Captain."
After the three people dressed up, they directly entered the scene again. After searching carefully for an hour, Du Dayong found basically nothing in the living room.
"Captain, come and take a look!"
Lu Qianqian suddenly shouted in the bedroom.
Du Dayong ran in immediately.
"Captain, look at the sponge-covered armrest of the sofa next to the bed. This is a fresh nail mark. There is a word "two" here, but the horizontal line below it seems to be too long."
"I don't know who left this. I guess the sleeping pills didn't reach the ideal state due to her physical condition, so I used the remaining consciousness to make this scratch mark when she was hurt. In addition,
Under the armrest, the suspect probably didn't know about it. But how did you find it? It's hard to see the scratch."
"Captain, I see this based on your notes. It is better to use solid light for strong light. It is better to use soft light for fabrics or cotton. The one I used today is for soft light inspection, and it is still dark yellow.
, because what you are saying is that dark yellow light will be more obvious in capturing scratches on woven or cotton items that are not highly reflective, except for yellow and red items."
"Really? Why don't I remember?"
What Du Dayong gave to Lu Qianqian does not have much scientific basis, but it comes from what he recorded and is a bit confusing.
"Ah?! It's true. I saw it in Team Tang's notes. It said it was excerpted from your notes!"
"What I said at the time was just a possibility. It was that under different circumstances, stains or slight scratches might cause such a situation. Doesn't it mean that it is definitely good? This Tang Shuaishuai really knows how to do it.
A record of cutting off the head and tail."
"Captain, now it just proves that what you said is right, and what Captain Tang recorded is also correct."
Lu Qianqian said with twitching eyes.
Du Dayong suddenly didn't know what to say. If he kept talking, Lu Qianqian would probably be able to say that facts were louder than words.
"Does the word "二" represent Faye Wong? Or are two people committing the crime? Or is the murderer called the second brother or the second sister? Or does it mean that he or she wants to kill both of them?"
Du Da asked a lot of questions in a short time.
"Shine it with a flashlight and I'll take a look!"
Lu Qianqian turned on the flashlight, and Du Dayong took a closer look. The two traces were actually very weak. Even if he found out now, it would be of little use to Du Dayong, because there are too many characters that can appear in the word "二".
There are too many meanings that can be answered, and even the suspects knew it and deliberately left them behind. That is what really misleads the investigation work.
"Qiao Chuan, come and take a picture. Don't turn on the flash, let Lu Qianqian take the picture for you with a flashlight."
When Qiao Chuan heard this at the door of the room, he immediately went to get his camera.
Du Dayong walked out of the house, because just a trace here cannot prove anything. The criminal suspect is so shrewd. If this is really a trap laid by the criminal suspect, he is preparing to keep it to deceive the police.
of.
For a criminal suspect who could deal with all the iron railings on the balcony, Du Dayong couldn't help but suspect that this was intentional.
Such a criminal suspect must not be treated like an ordinary criminal suspect. Starting from the criminal suspect to formulate a murder plan, this criminal suspect almost spent more than half a year operating this matter, and he did it regardless of the cost.
If you commit a crime, you will know that the criminal suspect will never be that simple.