Is it fearless, or is it full of confidence?

Was it a deliberate attempt to hide their emotions, or were they sure that the police couldn't find what they were looking for?

You can't see through people's hearts, so you can only seriously walk through each room, hoping to find something that everyone has overlooked.

Solving the case lies in breaking the word. Break, itself is a verb, without paying, just relying on reasoning in the office, you can't solve the case at all.

Zhou Youzai carefully turned over the villa and found no additional findings.

After the police had cleared the scene, heavily armed forensic doctors began spraying luminol reagents.

Luminol is a chemical agent, also known as luminous ammonia, that can detect blood at crime scenes that cannot be seen by the naked eye, and can show a very small amount of bloodstain morphology.

The most common episode of film and television drama works, many criminals wash the blood left behind with water after killing someone, thinking that they can destroy the corpse. But as long as there is a chemical preparation of luminol, no matter how clean you think you wash, the blood will not be completely washed off, as long as you spray luminol to the corresponding place, luminol will have a chemical reaction with those trace amounts of blood residue, emitting blue light. In this way, a basic restoration of the crime scene can be achieved.

However, this reagent is a strong acid, which has a certain irritating effect on the eyes, skin, and respiratory tract, so you need to be extra careful when using it. The second is that in the sun, the light it emits is almost invisible. This means that you need to use it at night or in a dark place.

Nothing found!

The forensic doctor also had some differences, and looked at Song Guyan on the side in confusion.

The luminol reagent did not react, isn't the villa the scene of the crime?

The blood stains on the van are real, and the contents of the surveillance probe are not deceiving. But there is no blood in the villa, so there is only one.

Song Guyan graduated from the criminal investigation major, and the reagent is just an auxiliary means, not a panacea. If you use some potions containing enzymes to clean, you can fundamentally destroy the chemical properties of blood cells, and the reagent will have no effect.

A large number of facts have proved that the murderer has sufficient anti-reconnaissance capabilities, and it is not impossible to use a potion containing special enzymes to clean the bloodstains.

Song Guyan didn't expect to be able to achieve it overnight, and it was not easy to get to this point. How to proceed in the follow-up will require a little luck.

As a major suspect, Tong Menglin was brought back to the police station for further investigation and interrogation.

Tossing back and forth, traveling around is really tiring. Climbed into the car and soon fell asleep.

When Zhou You woke up, he was covered with a small blanket. Looking around, it was still in the office of Group 6.

The lights were on in the office, and Song Guyan was still sitting on the desk watching Tong Menglin's interrogation. Tong Menglin is quite uncooperative, and at most she can be detained for the legal time.

With only a confession, Song Guyan strongly felt her defense, obviously guided by someone, and what she said was inconsequential.

Zhou You glanced at the time, it was already more than 11 o'clock, and it was estimated that there were only policemen on duty in the entire police station.

"Gollum~" Zhou You fell asleep without dinner, and his stomach was so hungry.

Zhou You remembered that there were some small snacks in Xi Yao's drawer, and thought about padding his stomach first.

As soon as I walked to my desk, I came to a flat recliner with a lump of things on it.

My second bedroom~

Zhou You was so frightened that he almost jumped up. Xi Yao's sleeping posture was super ugly, a quilt was covered on her body, only her hands and feet were exposed, and it was really terrifying under the dim light.

I didn't expect the second girl to stay and work overtime, I guess I couldn't bear it, so I went to sleep.

These two girls are too paranoid about solving the case, whether they work overtime or go back and forth, they are desperately persevering.

Pulling the drawer open, Zhou You found half a pack of ham sausages and came out, and ate two to fill his stomach.

glanced at Song Guyan, who was standing in front of the whiteboard and still combing through the case, I didn't know if she had eaten. After thinking about it, Zhou You picked up the remaining ham sausage and ran to Song Guyan's side.

"Why, don't bother me. Song Guyan felt that his trouser leg was being pulled, and he knew that it was soybean milk powder that woke up.

"Wang~" Zhou You called out, wanting to bring Song Guyan's attention back.

However, Song Guyan was completely immersed in his own thinking, completely ignoring the trip, but was a little impatient.

It's really kind to treat it as a donkey's liver and lungs, and if you don't eat it, you deserve to starve to death!

Zhou You ran to the side in a huff, and then lay down on the mat.

I don't know how long it took, Song Guyan rubbed his eyes, yawned, and stretched. It's already early in the morning, and it looks like I'm going to have to spend the night in the office.

Fortunately, the air conditioner is turned on in the office, and there is a small quilt, so it is quite comfortable to sleep.

Song Guyan saw the remaining half of the pack of ham sausages on the chair, and couldn't help but glance at the soybean milk powder that was sleeping soundly. The soybean milk powder seemed to have pulled himself before, Song Guyan originally thought that the soybean milk powder was boring, and it seemed that he just wanted to give himself food.

When you are immersed in one thing, it is difficult to perceive the physiological changes, and it is completely supported by willpower. After this relaxation, Song Guyan suddenly felt hungry, and he didn't care about the tooth marks left by the soybean milk powder on the packaging bag.

After going to work, I had to go to the interrogation room, and then there were other arrangements, if I didn't have enough energy, it was easy to make mistakes, Song Guyan quickly fell asleep on the sofa.

When Zhou You woke up, there were already many policemen in and out of the office, and Song Guyan was also energetic to report something to the leader of the sixth group.

The fragrance that came to his nose attracted the attention of Zhou You, and there was a steaming breakfast in front of him, which could be regarded as Song Guyan's conscience.

The leader of the sixth group was also surprised by the progress of Song Guyan and Xi Yao's investigation, but they didn't expect a breakthrough in such a short period of time. For the sake of his own future and the functions of the six groups, the team leader strongly supported Song Guyan and Xi Yao, and even asked many members of the six groups to cooperate with the detection of the two girls.

The detection of a difficult case may be accidental, then two or three, as the number of cases detected increases, colleagues and leaders will naturally begin to pay attention to the six groups, and the positioning of it will no longer be Qingshui Yamen.

In order to achieve this goal, the team leader even used a lot of previous relationships and contacted the leaders of many technical departments to provide a lot of support to Song Guyan and Xi Yao.