Investigation and monitoring is the most indispensable part of many criminal investigation methods, and it is often the link that makes a major breakthrough.

With the speed of development of modern society, it is only a matter of time before you want to cover the whole world with all kinds of surveillance cameras.

Whether it is an ATM, a traffic camera, or a surveillance device installed by major merchants, it is the eye of the sky that makes crime unhidden.

As the saying goes, whoever walks through will leave traces.

The more developed the city, the more criminals will not be able to hide.

Because you don't know what you did in the course of the crime, whether it was captured on surveillance footage.

This is the invisible deterrent.

Of course, as it stands, not all places in a municipality like Shancheng can be covered by surveillance cameras, even in municipalities like Shancheng.

For example, the community where Liu Ruyan lives, because of its age, let alone supporting facilities, does not even have a property.

Unlike many newly renovated communities, slightly more formal properties will also use infrared monitoring equipment to prevent misbehavior at night.

Section Chief Wang and Brother Enchanting walked around the community where Liu Ruyan was located for most of the day, and they didn't see a single camera, and they couldn't help but feel that the place chosen by this little girl was too unsafe.

But when I turned my head and thought about it, if Liu Ruyan really had the money to change to a good house to live in, she wouldn't have sold her body.

The three of them looked and looked at the gate of the community, searched and searched, and finally determined that this was a dead end.

However, just as the three of them were about to leave, Mo Xiaochuan stood still in front of an Audi.

Seeing this, Section Chief Wang couldn't help but quip: "I didn't expect that there are people who can afford to drive this car in such a broken community!"

Mo Xiaochuan shook his head, stretched out his hand and pointed towards the windshield: "Look there." ”

The bewitching brother poked his head over to take a look, and immediately found a small red dot in the car.

"Dash cam?"

"It should be. Mo Xiaochuan nodded and said, "Now we can only hope that this car will stop here before ten o'clock last night." ”

Section Chief Wang had a big belly, and he was able to look at the car moving phone left in the car, and finally remembered it all.

"Hey, are you the owner of a black Audi with a tail number of 3079? We are from the Municipal Criminal Police Team, and there is something I would like you to cooperate with......

Twenty minutes later, a tall man hurriedly ran to the gate of the community, and bent over to Section Chief Wang and Brother Enchanting in panic.

"Hello, I'm the owner of this car, what's going on?"

The bewitching brother leaned half on the car door, took out his documents with one hand and showed them to the other party, and with the other hand gently knocked on the glass of the window, and said, "Open the door." ”

The tall man didn't even dare to ask the reason, so he quickly took out the car key and opened the door, only to see the bewitching brother leaning directly into it, reaching out and scooping out the dash cam in the car.

"We have temporarily detained this thing, and when the investigation is completed, we will call you to go to the city criminal police team to collect it." ”

"Yes, yes. The tall man wiped the hot sweat on his head and said again and again: "It's my honor to help our people's police solve the case." ”

Section Chief Wang smiled and patted the other party's shoulder, and said, "Sure enough, you are conscious, you just said on the phone that this car has been parked here since eight o'clock last night, can you be sure?"

"Sure, sure!"

Seeing the tall man's look of surprise, Mo Xiaochuan hurriedly comforted: "Don't worry, this matter has nothing to do with you, if your dash cam can really provide us with clues, the police will reward you at that time." ”

Hearing this, the tall man really relaxed a little, and waved his hand again and again: "That's not a business, it's all what we ordinary people should do." ”

Brother Enchanting smiled: "Okay, then let's go first, remember to keep the phone unblocked." ”

"No problem. The tall man agreed.

Then Mo Xiaochuan and his entourage got into Brother Enchanting's car again and drove all the way back to the police station.

After arriving at the police station, Zhu Ling asked someone to help read out the images in the dash cam and put them on the computer screen.

Section Chief Wang asked the technicians to directly tune to after ten o'clock last night, and then play forward in a fast-forward way.

After a while, Mo Xiaochuan's eyes lit up, and he said in a deep voice: "Stop!

The technician did as he was told, and soon, a man in black clearly appeared on the computer screen.

Mo Xiaochuan stretched out his hand and pointed at the screen: "It's him!"

Brother Enchanting pursed his lips and said, "I don't look very good! I thought it was so handsome and earth-shattering!"

Section Chief Wang didn't take this stubble, and said, "Keep put." ”

So the old dirt on the screen stepped forward and walked up.

Judging from the picture, the old dirt should have just walked out of the community where Liu Ruyan was, and his face was full of energy, as if he had been stimulated.

It can be seen that Liu Ruyan did not lie, and when Lao Fil sent her away, she was fine.

But the next moment, Mo Xiaochuan's brows slowly wrinkled.

Because the old dirt on the screen suddenly stopped, looked around inexplicably, and then took another step and continued to walk forward, and then disappeared into the picture.

"What did you mean just now?" Zhu Ling's face was full of doubts.

Mo Xiaochuan said in a deep voice: "It should be someone calling him, and he doesn't know this person, so he will look around and make sure that the person who is called by the other party is himself." ”

"So the person who called him ......" Wang Kechang's face was solemn.

"It's supposed to be the cook. ”

After listening to Mo Xiaochuan's conclusion, Zhu Ling and Brother Enchanting were both confused and looked at each other.

And Section Chief Wang looked extremely regretful: "It's a pity that I didn't photograph the other party!"

Mo Xiaochuan hesitated, and once again asked the technician to reverse the monitoring screen a little, stopping a second before the old dirt was about to come out of the painting.

At this time, because the old dirt was relatively close to the dash cam, he could see the expression on his face more clearly.

It's with a smile.

Mo Xiaochuan frowned secretly, and suddenly asked Section Chief Wang, "You should have profiled the cook before, right?

Section Chief Wang didn't think about it at all, and opened his mouth to come: "It should be a man about thirty years old, with a certain medical background, it is likely that he really worked as a chef before, he was abused by his parents when he was a child, he is about 1.7 meters tall, weighs about 120 pounds, and his habitual hand is his right hand, and his appearance is relatively friendly." ”

Hearing this, Mo Xiaochuan suddenly shook his head: "Let's not talk about the rest, I think there is one point, you may be wrong." ”

Section Chief Wang was stunned: "What's wrong?"

"I think...... The cook is most likely a woman. ”