Criminal Investigation Notes

"The male owner of this household was surnamed Zhou, named Zhou Chuguo. The deceased was him, along with his mother Chen Cuihua, and his wife Yang Li. This morning, someone heard screams in their house and rushed over to see that the door was half open. Then, there were people lying inside, so the police were called." Zhang Dahai introduced them while leading them in the door.

Lin Xiuran followed in, and Song Wen and Lu Siyu put on glove and shoe covers and walked into the yard.There are already three people standing in the yard. A middle-aged man with glasses in a daze took a forensic investigation box next to him, a fat man next to him was taking pictures, and a little policeman with pimples was looking at the corpse in fear He didn't dare to move forward.

Zhang Dahai introduced: "Li De is the forensic doctor of our county police station. He has also dealt with the forensic doctor Lin. The physical evidence is Xiao Wu, that little criminal policeman, whose surname is Meng, just call him Xiao Meng."

Lin Xiuran took a look, and it was obvious that this small yard was the scene of the crime, and he asked, "Have all the photos been taken?"

Zhang Dahai smiled and nodded: "It's all done."

On the ground near the door, there were two corpses, one man and one woman. Depending on their age, both of them were about 30 years old.It should be Zhou Chuguo and Yang Li's wife.

Now it’s approaching summer, the two of them don’t wear too much. The faces of the two corpses are pale, the dead bodies have formed, and the corpses present a strangely stiff posture. The buttons on the woman's body are loosened, and one of the men's shoes fell on. Aside, the male corpse's left hand and the female corpse's right hand were tightly pulled together.There was a burnt trace on the male corpse's right hand, which was obviously an electric shock.

Lin Xiuran glanced at it and frowned slightly: "Have you moved these two corpses?"

The forensic doctor Li standing in the yard was taken aback by his question, and looked at Zhang Dahai as if asking for help.He didn't want to move these two people, but Zhang Dahai gave the order when he arrived in the morning.

After hearing Lin Xiuran’s questioning, Zhang Dahai had to explain hurriedly: “These three people were all dead when we arrived. At that time, Zhou Chuguo’s hand was still on the doorknob, and we cut off the electricity for the sake of smoothness. Opened the door and pulled his hand down...the other thing didn't move. Alas, by the way, we didn't undo the button."

"The button should be caused by struggling. If you encounter such a situation in the future, it's best not to move it. We will deal with it when we arrive." Lin Xiuran knelt down and checked the two corpses. He took a look. The electric spot on the palm of the male corpse's palm again felt the dead body. "The time of death is between six and eight o'clock in the morning, depending on the results of the autopsy. The cause of death should have been electrocuted."

After speaking, he got up and walked inside. Now after a whole morning of sun exposure, the accumulation of water in the yard has been reduced a lot, but the water stains are still there. In the center of the yard, there is a pool of stagnant water. The old woman who has reached her age should be Chen Cuihua, Zhou Chuguo's mother.

Lin Xiuran walked over and looked at it in detail. He lifted the old man’s hanging hair and looked at the old man’s face. The old man was lying in the water on the ground. He might have touched him when he fell. There was blood on her forehead. Her face was pale and she had eyes. It's half-open, and the prone posture is like a mass of meat lying on the ground.Because of being electrocuted, her fingers convulsed, as if the animal's claws were tightened, trying to catch something.

"Now it is determined to be the murder. The murderer is very familiar with the surrounding situation. He should be an acquaintance. You can rule out the crime. You'd better apply with the above and send the police to the nearby stations to prevent the suspect from escaping." Song Wen said. Putting on the gloves, "People in the village should also pay attention to the next move."

Zhang Dahai only thought of this, his face changed slightly and took out his cell phone and said, "I will call right away."

Song Wen could see that Zhang Dahai's words were perfect, but he was actually a great mallet and couldn't be counted on.Neither the little policeman nor the physical evidence showed much experience, perhaps even the dead have not seen a few.He instructed them to do a basic site survey, and then he turned around and asked Zhang Dahai: "Such a big thing has happened in the village, is the village head here?"

"Hey don't mention it, the old village chief had a stroke a year ago and he passed away two months ago. There are several people in the village fighting over and underhand trying to be the village head. But those people usually fight fiercely, and if something happens, they are all persuaded. Now it’s the party secretary taking care of the affairs. When you didn’t come in the morning, the party secretary had been here. He told you to investigate the case and cooperate with all the villages.” Zhang Dahai took a cigarette from his pocket and returned it to Song One article was handed over.

Song Wen waved his hand: "I don't smoke."

Zhang Dahai is still reluctant: "Come here, you are welcome, although this cigarette is not as refined as yours, but it can be smoked very well."

Song Wen frowned relentlessly: "This is the scene. If you want to smoke, just smoke it outside."

Zhang Dahai gave up, oh, and put the cigarette behind his ears in surprise.

Lu Siyu knows Song Wen’s character. In life, he will give this kind of old man the respect he deserves, but as long as he is at work, Song Wen will become serious. If someone does a poor job, it’s with him. No matter what the seniority and age of the other party, it is not a bit of face, and the picture is correct. This sea flattering pat on the horseshoe, deserves Song Wen to teach him a lesson.

Then Song Wen asked Zhang Dahai: "What are the occupations of these deceased?"

Zhang Dahai said: "Chen Cuihua has been at home for a long time, Zhou Chuguo is the accountant in this village, Yang Li has been working in farming, taking care of her family by the way."

Song Wen nodded, walked into the house and looked around. Chen Cuihua lived on the first floor, and Zhou Chuguo and his wife lived on the second floor.The family was obviously not prepared for bad luck, and there were leftovers in the kitchen.From the outside, the house in this family is well built, and it is supposed to live a rich life, but for some reason, the home furnishings are very simple and the table is full of vegetarian dishes, which seems to be living in a difficult situation.

"There was no sign of being turned over in the house. There were no signs of outsiders entering the house or door inside. The murderer did not enter the yard at all. The money placed on the table at home was not lost. It was not for money. Everyone’s clothes were still intact, nor was it. For sex, it should be for hatred, or for other reasons, he just wants this family to die." Song Wen said while checking the scene.

Lu Siyu nodded: "This case is definitely not accidental, but the murderer was carefully prepared and planned. He is waiting for such a heavy rain." The method of electrocuting people can prevent the murderer from entering the door and not meeting his face. Killing is invisible, it is easier to hide the murderer than other means.

"Last night, it rained from 6 to 8 o'clock. After 8:30, the rain stopped completely. Therefore, the installation time for that wire should be between 8:30 and 7:00 the next morning. The murderer knew that there was only heavy rain. , There will be water in this yard.” Song Wen said, returning to the door and opening and closing the door: “The electricity is directly connected to the iron door. The threshold is relatively high. When the door is not open, the yard is It’s safe, and I can’t even notice the wires connected to the door. It should be Zhou Chuguo who came to open the door in the morning. After he was electrocuted, he couldn’t break free. Yang Li went to pull him, but was stuck together. She stepped on the yard. The water is equivalent to diverting electricity into the yard. The entire yard was electrified. Chen Cuihua, who heard the sound, was also electrocuted."

This family of three had no idea that the iron gate of their home would be used as a murder weapon by the murderer and would die on this morning.

Lu Siyu lowered his head to record, and the horror of the morning appeared in his mind. The arc was crackling in the yard, and the three of them even screamed and convulsed without time. They quickly became motionless.The feeling of electric current hitting the body is an unbearable sting, like a fiery needle pierced into the skin, like a caterpillar crawling into the body quickly along the flesh and blood, until the electric current hits The heart caused a cardiac arrest.

After Lu Siyu marked each specific location measurement, he frowned slightly and looked at the gloved fingers that were not convenient to bite. He opened his mouth and grabbed the pen in his hand. Who was it to the family? Have such a big hatred?

After reading outside the room, Lu Siyu walked into the room, his gaze fell on a book, and he turned it around, and found that it was Zhou Chuguo’s bookkeeping book, and every account on it was clearly remembered, and the details were nothing. They also record the accounts in different colors because of the trivial matters of life. There are still several books on the shelf of such bookkeeping books.There was a biscuit box next to him. Lu Siyu opened it with his hands and found that there were various bills inside, each of which was folded squarely and neatly. He looked at the earliest bill, and it was a few years ago.

"...Looking at this height, the murderer should be taller than 1.75 meters tall. He is a man. At least, the person who was connected to the wire may be a man. The murderer should know the family of the deceased. Only acquaintances can know the location and situation of their home and know how. Pull the call, where to tie it, the murderer has certain electrical knowledge and may have completed the operation with insulated gloves." Song Wen quickly made a judgment, then he looked outside the door and asked Zhang Dahai: "The physical evidence extracted the footprints at the door. Yet?"

Zhang Dahai said: "Captain Song, you also know that it rained heavily last night, and the people who reported the crime this morning also watched at the door. There are not many valuable traces."

Song Wen didn’t listen to his flicker, and thought for a while, “No. It rained last night, and the place at the door was wet, the terrain was relatively high, and it’s easier to leave footprints. Moreover, the murderer wanted to place wires on the door and needed to leave. The shutters of the door are very close, the angle should be a blind spot, and the crowds onlookers will not step on it."

Song Wen walked to the door and crouched down. He saw that there were two stacked footprints at that location. One of the footprints on it was more obvious. Song Wen looked very familiar, and then he became angry and turned his head to look towards Zhang Dahai, "Team Zhang, these are your shoe prints."

Zhang Dahai saw that it was exactly the same as the footprints he had stepped on, his big face blushed, "Ah, that...this...probably I didn't pay attention when I was watching the wires in the morning..."

Zhang Dahai praised Haikou and said that the site was well protected. Lin Xiuran and Song Wen were picked up by Lin Xiuran and Song Wen and destroyed important physical evidence, no less than being slapped in the face.He took the yard for granted before as the scene of the crime, and didn't think about it carefully. In fact, the murderer didn't come in at all, only stayed at the door.

Although Song Wen was angry, he still had nothing to do with this situation.Everyone knows to protect the scene, but in reality, the scene is often destroyed by reporters or the people who rushed to the scene first, which will cause difficulties in later detection.The forefoot part of the footprint in front of him was damaged by Zhang Dahai, and it was blurred and unrecognizable, only the heel remained outside.

Song Wen looked up and asked, "Have you taken a picture here?"

Zhang Dahai just woke up like a dream, and called the physical evidence to take pictures, and asked the little detective under him to extract the measurement footprints.

Seeing the panicked silhouettes of a few people, workaholic Captain Song sighed helplessly, this group of pig teammates really couldn't move.

Lu Siyu walked over and took a look at the damaged material evidence: "At least half of the shoe prints are left behind. Take a photo first. You can do part of the footprint screening." He blinked and tried to visualize the two. A footprint peeled off, and after a while, he said, "This footprint is about 43 yards, with a thick bottom and a wave pattern on the heel. From this, it can be judged that the wire is connected to a male, who is about 180 in height. According to the position of the two footprints. , This person's standing posture is a little bit of tiptoes."

Although Zhang Dahai was a little confused, he also knew the importance of footprints, scratching his head and said: "I heard that there is an expert in the Provincial Police Academy, who can judge who is not who is based on footprints alone, which is very amazing."

Lu Siyu raised his head to look at him, and calmly said: "You are probably my mentor."

Everyone’s footprint is one of the most basic behavioral characteristics. It is related to a person’s age, weight, height, and even past experience. There are no two identical fingerprints in this world, the same, even if they are dressed the same. Shoes can't leave two identical footprints.After Wu Qing retired to the second line that year, he conducted systematic research on evidence from a series of crime scenes such as footprints and blood stains and published several papers.Lu Siyu followed him to learn related criminal investigation techniques and also benefited a lot.

Zhang Dahai rushed to land Siyuhe and accompanied him with a smiling face: "A famous teacher has a good apprentice, then this case should be solved soon."

Lu Siyu ignored him, holding the camera and pressing the shutter continuously.

"Expand the scope of the search to see if there are similar footprints in other places in the village. In the afternoon, you can circle the suspects and try them one by one wearing similar shoes to see if they are the same person." Song Wen looked at the scene. He also exhorted: "After you turn on the power, measure the current and voltage on the door when it is energized. Be sure to pay attention to safety when measuring. After the test is over, you can carefully remove it and check where the wires are connected. , What brand, how long, and what information is on it."

Zhang Dahai gritted his teeth and nodded. In Luning County, where he is located, there were only a few homicides a year, most of which were relatively simple plots, either with eyewitnesses or passionate homicides, if not for the large number of deaths in this case. It was also strange, and it was not enough to call Song Wen and the others.

Zhang Dahai has become arrogant in this realm, and everyone respects him as Police Officer Zhang. The detective captain who is calling now has done things vigorously, completely disregarding his face, making him angry and hateful, but on the surface. Listen to Song Wen.

During this period of time, Lin Xiuran inspected the three corpses there and stood up and said, "Here, Zhou Chuguo's corpse has some fighting marks under his ribs and knees. It is impossible to tell whether these marks are related to the case. Several people. Almost at the same time, they were electrocuted to death. The others have to go to the funeral home to see the results of the autopsy. We will be divided into two groups later."

The car carrying the corpse was already parked at the door. It seemed that Lin Xiuran wanted to hurry.Lao Li and a few others helped Lin Xiuran carry the body into the car.

"Then we will contact you at any time." After Song Wen finished speaking, he waved his hand and sent Lin Xiuran away.He looked at the scene and concluded: "A man, a height of about 180, an acquaintance, knowledge of electricians, and a grudge against this family. There was time to commit crimes last night to this morning, Captain Zhang, this is your site, do you think there is The suspect?"

Zhang Dahai was a little afraid of Song Wen, and thought for a while and said, "It seems that there is a suspect... But I haven't been back to the village for a long time, so I need to check it."

Song Wendao: "You can screen those who meet the requirements first. If there are key suspects, we will check them one by one."

Zhang Dahai nodded hurriedly: "Oh, well, it's simple. I turned around and checked the resident information one by one. I guess that there are only a dozen in this village that meet these points."

At this point, Lu Siyu frowned and said: "Police Officer Zhang, I saw a boy's clothes in their house. You also said that Yang Li has been helping her husband and child, but where are their children? "

When he mentioned this stubbornness, Zhang Dahai looked a little embarrassed, and coughed: "Zhou Chuguo and his wife have a son, but it is a bit sad to say that the child in this family drowned and died accidentally two months ago when the spring started."

"Why didn't you say such important information just now?" Song Wen said, after hearing this, Zhang Dahai said.It is reasonable to say that these information should be told to them when they arrive at the scene, but it turned out that Lu Siyu could tell him.

Zhang Dahai was embarrassed: "This...you didn't ask just now."

"What a coincidence? Is it drowning?" Song Wen asked with a frown. The family seemed to be dependent on the god of death. The son drowned two months ago, but the adult had another accident.Although it was an accident, it was too close at this time. Perhaps, this kid’s accident was not simple, and it might have something to do with the current case.

Zhang Dahai explained: "This...Anyway, the child went out to play with his dad and lost his run. Later, people from half of the village went nearby to help find, and finally found it by the river. At that time, in spring, Xiaohe occasionally would Swelling, watching the water surface at the ankle can reach the waist of an adult in less than a minute. Maybe the child didn’t pay attention and caught up with the swelling when playing."

"What happened later? Did you dissected it? Is it an accident?" Song Wen continued to ask.

Zhang Dahai raised the matter with an aura: "Their child is called Zhou Cong, who is only six and a half years old this year. The family was unwilling to dissect the child at the time, saying that he didn't want the child to die but not the whole body. We were cautious at the time and advised to sign. I dissected it, and when I cut open the body, it was all drowned. The child was drowned! I had to sew it on again. Because of this, Zhou Chuguo didn't show me a good face for a long time."

Song Wensheng was afraid of any omissions, and asked Zhang Dahai: "This family's house looks like a big family from the outside. Why does it feel that life is a little tight after coming in?"

Zhang Dahai said: "Oh, that's the custom that you don't know about our place. On our side, there is a saying that goes bankrupt, marries a wife, and sells daughters happily. Here, there are few girls and there are many men of the right age. This marriage market The price has risen and the price of the wedding has risen. When you get married, you can add hundreds of thousands of dollars to the bride and the gold and silver jewelry for the wedding."

"For you people in the city, this may be money for toilets, but for rural people, it's a lifetime savings... Many people gritted their teeth to beg their wives or even borrow money to marry a wife. Some people If you have sons and daughters, then you sell your daughters and use your daughter’s bride price to marry your daughter-in-law. This will bring you wine and entertain the whole village. Country folks want face, wine wants Moutai, cigarettes want Zhongnanhai, and the money is paid for the money. It's not enough, it's all about paying for marriage."

"The same is true for my family this week. I spent most of my savings on building a house. A few years ago, I spent the rest of my money to get a wife and owed a debt. Now my life is tight."

Song Wen sighed: "You seem to be in front of Nancheng here. Why is the price of marriage higher than that?"

Zhang Dahai smiled and said: "The more rural areas are now, the more rules there are. Many girls want to leave here, but they were taken away by your city people."

After chatting with Zhang Dahai for a few more words, I couldn’t find any other clues here. Song Wen said: “If there is no clue that the child’s death is related to this matter, let’s investigate this case first, and the rest will be troublesome. Officer Zhang." After saying this, he pulled Lu Siyu and said, "Go, it's time for dinner, let's go to dinner."