Chapter: 66

Imagine that two policemen, probably four policemen, drive to another city perhaps thousands of kilometers away, communicate with the local criminal investigation department, and request to send someone to assist in the investigation and arrest of criminal suspects. A lot of money was spent on overtime pay, board and lodging, and the one who brought home was a petty thief who stole several electric cars, and he might not be able to catch anyone... Whoever thinks about it will be in a panic .

Compared with the young Mu Zhiyang, Zhou Ta couldn't understand Jiang Yuan even more.

However, he was used to doing more things and less talking, and helped Jiang Yuan organize his things before rushing to the parking area outside the community without stopping.

When they arrived at the place, the three of them put on gloves and masks, and began to dig the sewer, trying to find the cigarette butts and garbage seen in the video.

Three people, two big bags, soon stood up satisfied.

"The pollution is like this, probably only cigarette butts can be used." Jiang Yuan sighed. There were a lot of cigarette butts in the sewer, so he took them all out and collected them one by one with a small evidence bag.

For this action, Jiang Yuan did it for more than a quarter of an hour.

Looking tired, Mu Zhiyang dragged his gloves, covered his nose and let it go in disgust, and said, "The garbage water has been soaked in, can you still check DNA?"

"It should be no problem. Cigarette butts have a strong ability to preserve DNA." Jiang Yuan carefully observed the cigarette butts, and said: "As long as they are not moldy, DNA can be detected in 10-year-old cigarette butts."

"So powerful? Why? Did it get soaked in while inhaling?" Mu Zhiyang followed Master to solve the case all day long, but he never paid attention to this.

Jiang Yuan nodded and said, "On the one hand, it's because you've been smoking for a long time, and on the other hand, the structure of the cigarette butt is good enough to resist external erosion. When it's time to test DNA, it's easier to tear out the cotton inside. come out."

"That's why we always say in the police station that crime needs to be learned. You say, in this era, there are still people who throw cigarette butts at the scene of the crime. We usually do the same when we do cases. Everyone is stupid, and there are evidences everywhere... "Zhou Ta smiled and shook his head.

Compared with Zhou Ta, the old auxiliary policeman, Mu Zhiyang saw it thoroughly, and said: "They don't want to leave evidence, they just don't care about it. I have encountered a murder case with Master once, and the murderer killed someone , ran out of the alley with blood in their hands, smoked a cigarette, and threw the cigarette butt in front of them after smoking, they didn't know, but they couldn't think of it at the time. They were too nervous."

"It makes sense to say that, but it's easy to do a theft case, and the thinking is quick, so it's hard to find evidence." Zhou Ta said.

"Those who do theft have a lot of repetitions and a high level of proficiency. Generally, those who do homicide are finished once or twice, and have no chance to practice." Mu Zhiyang began to make a summary.

"Murder is also complicated. The scene is often messy and there are dead bodies... It is equivalent to a big project. The theft is a small project. People who start to work on big projects are bound to be prone to mistakes." Zhou Ta also summed up some experience.

Jiang Yuan lifted the evidence bag and said, "I've gone back, and I don't know if I can compare it with DNA."

"Do your best to obey the destiny, that's the way it is." Zhou Ta followed for such a long time, hoping for results. It's just that he feels more about the experience of failure than success.

Jiang Yuan only nodded slightly. Speaking of which, this is the first time he has run a complete case.

Forensic Office.

The green radish is full of energy, stretching its thick and long leaves. Its root system absorbs water desperately, making its branches harden as much as possible, especially under the sunshine, it can be hardened for a longer period of time.

at the desk.

Jiang Yuan sat up straight, looked straight at his eyes, put Xiao Wang beside him, and began to seriously mark the feature points of the fingerprint he just got.

Xiao Wang looked more serious.

There is a saying in the grassroots police circles, that is, the police should not be criminal police, and the criminal police should not be technical criminal police, and technical criminal police refers to trace inspection, spot investigation, drug inspection, etc. in the criminal squadron.

The reason is that those who work as technical criminal police often have to act as ordinary criminal police. Show up when it's time to be on the scene, run errands when it's time to run errands, and when there are not enough people to arrest criminals , the technical police are the first to be arrested.

Xiao Wang used to like to say this sentence, but after Jiang Yuan came, Comrade Xiao Wang discovered a phenomenon unexpectedly.

Jiang Yuan has never been "arrested" since he started fingerprinting.

The work of the criminal police team is endless, especially when there is a murder case, the captain can follow everyone without sleep for three days and three nights, and ordinary policemen can take a nap when they have time, and they can laugh in their dreams.

However, Jiang Yuan sat in the office unmoved. Even with Xiao Wang, as long as he followed Jiang Yuan, he was never transferred.