At this time, in the office of the Public Security Bureau, several policemen handling the case were doing a case analysis meeting, and the presiding officer was the veteran police officer Hao Jun, who frowned unconsciously after listening to the statement of the case, and then put down his pen and made up his mind.

"Cloth control Lin Erhu!" Hao Junli said that this veteran criminal policeman who has been in the industry for decades has the unique temperament of a soldier, calm and restrained, clean and neat, and his two thick eyebrows show his courage to be ready to go to the battlefield at any time.

Xiao Shuai and Liu Tiejun on the side responded and immediately prepared to set off. This Liu Tiejun is about six years or seven years older than Xiao Shuai, with good facial features, almost thirty years old, don't look at him is tall and burly, strong like a steel stake and iron pillar, and there are a lot of jokes.

It is said that once Liu Tiejun was on duty, and there was no one at home, so he brought the child to the unit. The child was naughty, and his right hand was pierced by the iron sheet of the unit compound, and the blood flowed profusely.

Just in time for the high forensic doctor to be on duty, the criminal policeman Liu Tiejun directly led the child to the forensic office.

When I was an undergraduate, I also studied clinical medicine, and the unit tools were also complete, so it was not a problem. But have a forensic doctor stitch the child......

It feels a little awkward......

But Liu Tiejun was very calm, Lao Gao didn't say anything, after simple disinfection, he gave the child 3 injections of lidocaine, and quickly got the wound - after all, it was only 4 injections, and then told him to give the child tetanus vaccine.

Liu Tiejun was also very attentive, and immediately left his wife to call and asked his wife to take the child to get an injection tomorrow......

An hour later, the child's mother came...... When he saw the gauze on the child's hand, and then learned that it was actually a forensic wound, he politely invited Lao Gao out of the office.

Before Forensic Doctor Gao went out, he saw his wife pick up the pliers and hit Liu Tiejun, and Liu Tiejun, a criminal policeman who has always been brave and fearless, was so frightened that he ran away from the door......

For the next 5 minutes, his wife kept picking up all the throwing weapons at hand and chasing Liu Tiejun in the compound to fight to the death.

Well...... Liu Tiejun was much more injured that day than his son.

Later, this incident became a joke in the police force, and Xiao Shuai also told Liu Leilei, who couldn't help but laugh every time he saw Liu Tiejun. However, when handling the case, Liu Tiejun was not ambiguous, and set off with Xiao Shuai and Captain Hao Jun with Xiao Shuai and Captain Hao Jun.

There is no horn, no police signs, everyone is wearing civilian clothes, everything is going on silently, the car drives to a suburban Xianglian place, after this place is the exit of the highway from the city, this urban village street on both sides of the teahouse, tavern, pawnshop, workshop. There are also many small vendors with large umbrellas in the open spaces on both sides of the street. The streets stretch east and west to the quieter suburbs outside the city, but the streets are still full of pedestrians: some carrying burdens, some driving ox carts to deliver goods, some pulling wagons, and some stopping to enjoy the scenery of the river. Centered on the cramped city tower, the houses on both sides are lined up one after another, with tea houses, wine shops, foot shops, butcher shops, temples, and public houses.

Captain Hao turned his head to several police officers and said: "According to Wang Xiaoyan's clues, Lin Erhu will make a deal here today with a person named Ah Sheng, a set of jade carving nine-character mantra handprints from the Eastern Jin Dynasty. ”

"Jade handprints are prohibited by the state, stone statues, bronzes, and such utensils and cultural relics are not allowed to be auctioned or traded privately! Unexpectedly, the fall case also led to a big case of reselling cultural relics," said one of the police officers.

Liu Tiejun said, "The area around this alley is a gathering place of three religions and nine streams, and the people living in the broken city are all desperate or have a shady past, just like a dungeon, during the day the tavern pawnshop does business, and at night the tomb robbers come here to sell stolen goods to do business, the environment is very complicated, everyone should be highly vigilant"

Xiao Shuai said: "It seems that there is another person who is the real culprit in the fall case of the securities company, according to the male latent lines extracted from the deceased's clothes, the palm is wide and fat, it should be a middle-aged man, two kei shaped lines, two arc lines and one bucket pattern, Wang Xiaoyan said that the deceased was more abnormal when talking about her boyfriend. ”

"That Wang Xiaoyan has been dating Lin Erhu for more than a year, and I used to know each other in the foot-washing city, but later I thought that my feet were dirty, and I learned the craft to go to the beauty salon to do a spa, this Lin Erhu instigated her to take drugs in order to control her, so she was sent to a drug rehabilitation center first," Captain Hao said.

"Well, whose child is in her womb? The people in the whole company who interrogated them said that the deceased was a single woman, who had never seen any man in any relationship, and only left after working overtime until night every day, and the social circle was relatively simple, so it seemed that this mysterious boyfriend had to be found out as soon as possible to interrogate! Xiao Shuai said thoughtfully.

In the magazine, Liu Leilei's eyelids kept jumping, perhaps because there was some kind of telepathy between the couple.

Bai Luoling sipped coffee while checking the Internet for information about infrasound, while Li Xiaolan sat in the back seat and watered her new pot of spider plants.

Bai Luoling asked Liu Leilei: "Xiao Lei, your major is quite special, will you have some fun things when you go to school?"

Liu Leilei smiled and said, "Hello senior, I'm a freshman in forensic science, may I ask if the corpse in the anatomy class was brought by myself or sent by the school?" ”

"It's not very fresh to bring by yourself, and the quality of the school's hair is not good, we are generally killed on the spot, and students who have a good relationship can also dissect each other," Liu Leilei replied as he learned from his senior sister.

Liu Leilei smiled and stuck out his tongue, and continued to talk about his previous experience, I remember that there was another internship, and the partner was Lao Gao, who had been a forensic doctor all his life, and Lao Jia, who had been a forensic doctor all his life, but they didn't care too much about the necessary protection.

One day, Lao Jia and Liu Leilei at that time did an autopsy.

Suddenly, Lao Jia said to Liu Leilei: "Eighty percent of this person was poisoned? Estimated rat poison (hydrocyanic acid). ”

Liu Leilei had a surprised expression on his face at the time: "Teacher Jia, this is all right, I just opened the disembowelment, and I haven't even cut the liver yet, how can I see it?" ”

Lao Jia said: When I drew the knife just now, a stream of blood came to my mouth. Now my mouth is a little numb, and it is estimated that the blood content of this person is not low.

Then Lao Jia continued the calm autopsy.

Speaking of which, Liu Leilei is still serious.

Bai Luoling laughed out loud when he heard a pop, but heard a text from Lee Xiaolan reading behind him: "Sound waves with a frequency of less than 20Hz (hertz) are called infrasound." Infrasound waves are not easily attenuated and are not easily absorbed by water and air. Infrasound waves, on the other hand, tend to have a very long wavelength, so they can diffract around some large obstacles. Infrasonic waves of certain frequencies are easy to resonate with human organs because they are similar or even the same as the vibration frequency of human organs, which is very harmful to the human body and can cause death when dangerous. ”

Liu Leilei said: "I have already checked this, I have looked through a number of cases of infrasonic killings, in early 1948, when a Dutch cargo ship was passing through the Strait of Malacca, after a storm, all the seafarers on the ship died inexplicably; At the entrance to the Hungarian Bauladeli Cave, three tourists suddenly collapsed and stopped breathing...... These tragedies have attracted the attention of scientists, who have also conducted long-term research on the causes of the death of the crew.

There was not the slightest trace of burning on board; There are no signs of a pre-mortem fight on the remains of the victims; The ship was stocked with enough food and fresh water. No injuries were found on all of the victims, and there were no signs of poisoning. Obviously, the theory of murder or suicide is no longer valid.

So, is it a sudden onset of cardiovascular and cerebrovascular diseases such as diseases? The autopsy report from the medical examiner showed that the deceased was all in good health! After repeated investigations, we finally figured out the "murderer" who caused the above-mentioned tragedy, which is a kind of time that people don't know very well! Sound! Wave! Yes, infrasound waves from tsunamis. ”

Bai Luoling moved and whispered: "Why don't we go and investigate the singer of that music restaurant tonight and find the clue to the origin of the song Black Sunday in the deceased's mobile phone?" ”

Li Xiaolan waved her hand and said, "I don't want to go again, the atmosphere of that music restaurant is too weird, I feel dark and terrifying when I look at it."

The dark and dreary night seems to be smeared heavily on the sky. The night was thick and could not be dissolved, and there were no pedestrians in the long silent streets, and there seemed to be footsteps behind them.

Bai Luoling drove her Beetle car, carrying Liu Leilei straight forward: "Is there any progress on Xiao Shuai's case with Li Xinyi?" I always felt like the dream was real, and the dead man was trying to tell me something."

"They went to a place called Deaf Alley in the afternoon, and it is said that in the evening, it was a black market called Dungeon, and it was said that from the mouth of the suspect in the beauty salon, another case of reselling cultural relics was interrogated - the nine-character mantra of jade carving."

Dungeons! Bai Luoling's eyelashes twitched, as if he remembered something

According to the record of "The Record of the Netherworld": "People die as ghosts, ghosts die as deaf, deaf death as hope, and hope dies as destruction." It turns out that there really is a dungeon in this city."

At this time, Liu Leilei looked straight ahead with his eyes and said calmly: "Go to the wilderness villa!" ”

Bai Luoling said: "It's to go to the wilderness villa!" ”

The two girls nodded at the same time as they understood.

This is an old European-style villa building, standing on the edge of the city where the Golun is drunk, as if the city's burgundy glass is filled with a seductive and terrifying atmosphere, the wind seems to smell the smell of blood, a coolness penetrates the body, piercing into the bones, as if the cold that has been imprisoned for thousands of years has been suddenly released, making people tremble at the moment when the brain can't think.

The moonlight appeared and disappeared through the slow-moving black clouds, and a strange figure stood at the corner of the field villa not far away, Liu Leilei shouted to the black shadow: Li Xiaolan, come out!

At that moment, something seemed to move in the shadows.