Cang Hao was a little curious: "What case?

"If so, it's easy. Liao Jiajun shook his head: "My colleagues in the bureau don't know what to do, so they called me and asked for my opinion!"

"You just said that this case is not for you?"

"Actually......" Liao Jiajun scratched his head in confusion: "I'm not sure if this is a criminal case!"

"Tell me about it. ”

"I'll go change my clothes, you wait for me, let's talk on the way." Liao Jiajun immediately went back to her room, she was fast enough, and before Cang Hao could say goodbye to Guo Lin, she came back, and the hospital gown on her body was gone, replaced by a straight police uniform.

The change of clothes was fast enough, and Cang Hao suspected that she might have put on a police uniform under the hospital gown and was ready to go to the police at any time.

It's just that Liao Jiajun still has bandages on his hands, and he keeps waving them when he talks, a bit like a big killer: "Let's get on the road!"

Cang Hao touched his neck: "In the TV series, the executioner said so before cutting off his head!"

The two stopped a taxi, and when they were on the way, Liao Jiajun briefly introduced the case.

A family bought a second-hand house, and not long after moving in, all four members of the family fell ill, with red and swollen hands, black nails, and fatigue.

The family sold their house to treat the disease, and the new family developed similar symptoms again. Moreover, the two surrounding families were also affected, and now there are rumors in the society that this place is evil.

The hospital has not determined what the cause is, and the person concerned has no choice but to call the police.

After the two arrived at the scene, Liu Tiansheng rushed over and reported directly to Liao Jiajun: "I now have a preliminary suspicion that it may be biochemical pollution, and the people from the technical investigation detachment have arrived and are doing an investigation." ”

"If it's really biochemical pollution, it may involve a criminal offense, and we should deal with it. Liao Jiajun was a little embarrassed and said: "But I have never encountered such a case!"

Cang Hao asked casually: "What emergency detachment?"

"Technical investigation is technical investigation, which is a technical department of the police, responsible for the scene investigation of criminal cases, including forensics, trace testing, poison testing and other specialties. Liao Jiajun gave a brief introduction, and said: "For some highly professional work, our criminal police do not have the technical means and equipment to deal with it, so we must use the technical investigation department. ”

Cang Hao noticed that some people at the scene were wearing a white coat over their police uniforms, and they were busy with some instruments in their hands. One of them carefully took a small sample of everything in the room, and then kept it with special equipment and prepared to take it back for testing.

They were very serious, but Cang Hao felt a little redundant, and raised his voice and asked, "Which of you has a Geiger counter?"

The white coats looked at Cang Hao together, and one of them, who looked like a leader, asked, "Who are you?"

Liao Jiajun hurriedly introduced: "Oh, he is my friend Cang Hao, come and help." ”

Hearing the name "Cang Hao", the two policemen looked stunned for a moment, obviously they had heard of it.

The leader of the technical investigation detachment came over and asked Cang Hao, "What is your opinion?"

"You're right to do this, and that's how you suspect biochemical pollution, but you're just afraid you're going to have to do useless work. After a pause, Cang Hao asked again, "Do you have a Geiger counter?"

The leader was stunned: "What is a Geiger counter?"

"To put it simply, the Geiger counter is used to detect radiation...... Cang Hao said, and took two steps out of the door: "I heard Liao Jiajun talk about the situation just now, I highly suspect that there is a radioactive source in this house, it should not be ordinary biochemical pollution, and it is best not to spend too long in this room." ”

"Geiger counter?" the leader was very embarrassed: "I haven't heard of this thing, where can I get it?"

A policeman from the technical investigation detachment hurriedly said, "Yes!

The technical investigation detachment does have Geiger counters, but usually they have not dealt with cases involving radioactive sources, and this thing has been sleeping in the warehouse for I don't know how long.

The leader sent a policeman back to fetch it, and then everyone left the house according to Canghao's plan, and stood downstairs and chatted.

Liao Jiajun pulled Cang Hao aside and asked in a low voice, "Are you sure it's a radioactive source?"

"I've encountered this kind of thing...... "Lighting a cigarette and taking a puff, Cang Hao smiled bitterly: "Have you ever heard of a dirty bomb?"

"Of course, isn't it a radioactive bomb, which detonates traditional explosives such as yellow explosives, and the explosive force throws radioactive materials into the air, thus forming a catastrophic ecology. Although it does not produce a nuclear explosion per se, it causes harm to the human body through the spread of radioactive particles. ”

"Your definition is very precise. Cang Hao nodded: "The reason why a dirty bomb is dirty is because it can contaminate a qiē, and the second is because it is difficult to detect, and the damage caused is invisible, unlike the slamming and intense like ordinary weapons." But the problem is that radioactive sources are not far from our lives, and they are widely used in industry and medicine, not only from nuclear reactors. Cesium-137 is often used in hospitals, cobalt-60 is used in food factories to eliminate harmful bacteria in food, and Iridium-192 is often used in infrastructure for internal flaw detection...... Therefore, if terrorists use a dirty bomb as a weapon, the consequences are very severe. ”

Liao Jiajun sighed: "I was given popular science by you!"

"Actually, making a dirty bomb is still a bit technical, and I've seen more primitive methods, throwing radioactive sources directly on enemy territory. I once saw a village where everyone was infected with leukemia and the local government was helpless. Later, it was the International Health Organization that intervened and found out that someone had thrown a radioactive source...... "Shrugging his shoulders, Cang Hao continued: "The darkness of human nature is far beyond your imagination!"

After chatting about the day's work, the technical reconnaissance detachment had already placed a Geiger counter, but no one could use it.

Cang Hao took it, opened it and debugged it, and then there was a "rustle" sound from the Geiger counter.

"As long as you get close to the radioactive source, this sound will become very strong......," Cang Hao walked around with a geiger counter, making a "rustling" sound, and finally found the location of the radioactive source, which was a scrap yard next to the house.

The police immediately rushed in, and after a careful search, with the help of Cang Hao, they found a metal rod, which was the legendary Iridium-192.

The thing is simple, the metal rod was picked up by the owner of the scrapyard, he doesn't know what it is, and he has also been sick recently.

Now that the facts of the case have been grasped, the relevant technical personnel immediately rushed over.

In principle, the use of radioactive sources is not only authorized by the health authorities, but also registered with the police. But over the years, there has never been a problem with the radioactive source, and the relevant departments have been negligent.

In fact, the police have the technical means to investigate, and the problem is that they have never been in contact with this kind of case and have no relevant experience at all. Without Cang Hao's intervention, I don't know how long it would take to find the truth, and all the police officers who go out will undoubtedly be irradiated.

The leader of the technical investigation detachment shook hands with Cang Hao vigorously: "Thank you for your experience in helping us solve the case." ”

"Nothing, as it should be. Cang Hao asked very carefully: "Can you give out some bonuses for righteousness and bravery?"

"This ......" leader was a little embarrassed: "I want to ask my superiors for instructions." ”

Liao Jiajun answered a phone call next to him, and then walked over and told Sù Canghao: "You go back to the bureau with me, our leader wants to see you!"

"Li Zhenglun?"

"Yes. Liao Jiajun said with a strange expression: "He wants to thank you in person." ”

Liao Jiajun took Cang Hao back to the bureau, and as soon as he entered the door, he saw Li Zhenglun, Li Zhenglun first said to Liao Jiajun: "Team Liao, you are too dedicated, and you will go to the police when you are still hospitalized." Then, Li Zhenglun shook hands with Cang Hao vigorously: "Thank you!"

"I want to ask if there is a bonus for righteous bravery?"

Li Zhenglun pretended not to hear Cang Hao's question: "When I knew who you were, I thought that your ability could completely help the police, but it's a pity that you didn't make a difference until today!"

Cang Hao smiled deeply: "Who am I?"

"You know, I know, there's no need to say it. Li Zhenglun smiled and lowered his voice: "Although, in some respects we are opponents, but one yard is one yard, this time I sincerely thank you!"

When Cang Hao heard this, he felt that Li Zhenglun's character was passable, although he belonged to a different position from himself, it was really rare to be able to distinguish grievances and grievances.

"I still have a question, the police officers who went out to the police today have been exposed to radiation, so there will be no health problems, right?"

"It's okay for such a short time. Cang Hao shrugged his shoulders: "If it's been a long time, it's hard to say......"

"So I want to express my gratitude to you, if you weren't there at the time, our comrades might have paid the price for their health. After a pause, Li Zhenglun told Canghao: "It seems that it should not be a criminal offense at the moment, and now the technical department has recovered the radioactive source, and the preliminary judgment is that it was accidentally lost, and it has been lost for many years." Originally, there were protective measures, but they were buried in the ground, but recently someone was working and dug them up, and the protective measures were also destroyed, and it happened to be picked up by the people at the scrap yard. ”

Liao Jiajun immediately said: "The next thing is to find out who lost this radioactive source, and we must not be sloppy in pursuing responsibility, I heard that there is a victim who may not be able to do it!"

"That's your problem. Cang Hao looked at the time and said, "It's nothing, I'll go back, if you pay a bonus, please tell me." ”

Cang Hao was about to go out, and a policeman walked in with a box, and Li Zhenglun immediately frowned: "What does this smell like?"

"I don't know. The policeman shook his head: "I don't know who just now, I threw this box in front of our bureau." ”

"Probably rubbish. Li Zhenglun shook his head: "Hurry up and throw it away." ”

"It's not garbage. The policeman pointed to a note on the box and said, "It says that Director Li Zhenglun personally received it." ”

Cang Hao also smelled a strange smell, coming from that box, this smell was very familiar.