Chapter 1039

"How was the suspicion of Sun Xiuwen's stepfather excluded?" Jiang Yuan beckoned, signaling forensic doctor Tang Feng to sit down.

The case is just in the stage of just beginning to understand, and it has been half a month, Jiang Yuan is not in a hurry, and asks slowly.

Cao Chujun moved his body, facing Jiang Yuan, and said: "It is mainly a problem of time of crime. The victim's mother testified that the husband was with her between 6 am and 8 am."

"Is it a husband and wife mutual testimony?" Wang Chuanxing saw that Jiang Yuan didn't speak immediately, and immediately raised questions on the side. This kind of small-scale discussion, even if it is a new police officer, can usually interject. Occasionally, if it is said to be outrageous, it will not be blamed.

Cao Chujun smiled and said: "Although it is a husband and wife, the one who testified is the victim's mother, and there is some evidence."

"What evidence?" Wang Chuanxing asked.

"Condom." Cao Chujun answered, and said more clearly: "Around 6 am that day, the two made love, and the condom was thrown into the trash can, which has been collected as evidence."

Wang Chuanxing was surprised: "Did it for two hours?"

Cao Chujun looked at Wang Chuanxing strangely, helplessly said: "Both are awake before and after. The two also talked after last night. During the victim's death time period, the victim's stepfather should have no time to commit the crime."

"The time of death is worth considering." Jiang Yuan suddenly said this, interrupting the communication between the two.

Cao Chujun was stunned and sat down.

Jiang Yuan's accuracy in judging the time of death has long been a legend in the domestic investigation field. A photo of the negligence of Beijing experts in the gun loss case, and then solving the accumulated case that has not been solved for many years, can be said to be shocking, and since then, few people dare to question Jiang Yuan in this piece of time of death.

Tang Feng, a forensic doctor in Changyang City, also hurriedly turned over the information, not daring to say a word of questioning.

Jiang Yuan said: "Before the case happened, it was raining locally, indicating that the temperature had dropped. When the temperature drops, the relationship between corpse temperature and time of death must be reconsidered. This is the first."

Jiang Yuan looked at Tang Feng, then continued: "The problem of corpse stiffness is the same. It will not be discussed in detail here, but looking at the physical characteristics of the corpse, the victim's time of death should be earlier than expected. The most important thing is..."

Jiang Yuan took the remote control and put the PPT pictures up a few times, saying: "The state of these insects can better explain the temperature state of the local area, especially these nymphs... I judge that the victim's time of death should be between 3 am and 4 am that day."

This is equivalent to pushing the time forward by 3 hours at once, and the previous investigation might have to be overturned.

Tang Feng hurriedly said: "Captain Jiang, I am not questioning, but, in terms of liver temperature measurement, I feel it is not easy to make mistakes."

"You measured the liver temperature too few times, and it was measured a bit late. In addition, this area where the corpse is located is just under the cliff, and the temperature is much lower than the normal road temperature..." Jiang Yuan explained the reason for the mistake.

Tang Feng quickly understood: "The plan we used has some inappropriate places... Then what do you think is the best way to judge the time of death?"

He still has a heart to learn.

Jiang Yuan said: "From the current point of view, it is insects. Although the first scene is not here, the deceased has been abandoned in the wild for a long time, and there are many types of corpse-eating insects. Using forensic entomology, the judgment will be more accurate."

Tang Feng smiled bitterly. Although forensic entomology is simpler than forensic botany, in terms of pure difficulty, it is not as good as forensic anthropology, but this thing is still an obviously super-outline question. General forensic doctors will learn a little bit, but basically will not go deep into it.

In short, for the forensic doctors in Shannan Province, the vast majority of forensic doctors in cities and counties do not have LV1 forensic entomology technology. Changyang City is no exception. Instead, there are a few forensic doctors in the corners and corners of the city and county, who may be bored at ordinary times, or some kind of opportunity, will self-study some forensic entomology.

Cao Chujun had no time to deal with Tang Feng's emotions, and directly said: "In this case, let the time of death be between 3 am and 4 am that day! In this way, the victim's stepfather is back in the suspect sequence!"

Jiang Yuan held a new PAD, flipped through some photos, and nodded: "It can be corrected like this."

If it is a pure current case, he can look at the corpse again and study it. It has been half a month since the current case, and there is no condition for this, so he can only look at photos to make judgments, so the difficulty is higher.

Tang Feng naturally has no two words. Although he is also a forensic doctor in the Changyang City Bureau, sometimes he gives support to forensic doctors in local cities and counties, but compared with national-level bigwigs like Jiang Yuan, he can only uphold the attitude of I am a primary school student.

Cao Chujun stood up: "In this way, I will immediately send someone to bring the victim's stepfather over. In addition, organize manpower to re-investigate the victim's home. If it is the stepfather who committed the crime, the first scene is still very likely to be at home, but there were no obvious traces and discoveries during the first investigation..."

He said while looking at Jiang Yuan.

Jiang Yuan smiled and took the initiative to say: "Then I will go to the victim's home to see. Also look at the corpse abandonment site."

"Good! Great!" Cao Chujun hurriedly agreed.

On-site investigation is the same as forensic examination. There is no result for the first time, and it is even more difficult to get results for the second time. Especially now that more than ten days have passed, if the suspect has further cleaned the house, Cao Chujun is not very confident about finding evidence.

Say one more sentence, Jiang Yuan took people to the car and set off for Hualing Township. The Criminal Science Center of Changyang City Bureau also sent two cars to accompany, plus two cars from the Criminal Police Detachment, the entire motorcade drove out a total of ten cars.

Looking at the mighty team leaving the courtyard of the Criminal Police Detachment, Yu Wenshu stood in front of the office window, and a sentence suddenly rose in his mind: I have never fought such a rich battle.

Looking at this situation, Yu Wenshu felt that if he needed to catch people later, did he not need his own criminal police detachment to send people.

Seeing the motorcade far away, Yu Wenshu couldn't help chanting a poem: "... Jianghai three-year guest, Qiankun hundred battlefields. Who can resign from drunkenness, flooded and lying in the drama Qingzhang."

This is his favorite poet Li Shangyin's "Night Drinking". The reason why he likes Li Shangyin is not for anything else, just because Li Shangyin's poems are complex enough, others can't memorize them, and he remembers them easily at a glance.

Yu Wenshu recalled Jiang Yuan's performance in the conference room just now, and couldn't help but think: This child is like me!

Hualing Township.

Sun Xiuwen's home is a two-story self-built house. The gate of the big courtyard is directly against the township road. Opening the courtyard gate is the road, but there are few pedestrians and vehicles on the road, and it feels quite quiet.

The whole village is built sparsely, basically a long strip. Some people's houses are built more densely, which is mostly the houses of several brothers, or the previous generation is several brothers.

The village has long been connected to water, electricity, and the Internet, and it is a township under the provincial capital. It only takes 20 minutes to ride a motorcycle to the nearest town, and less than 10 minutes to the nearest market. Life is not inconvenient, but for the village itself, there is still a feeling of remoteness and desolation. Especially in the case of a large amount of farmland being abandoned, places slightly further away from the village are covered with half-human-high weeds.

Sun Xiuwen's corpse abandonment site is by the roadside, which can be said to be a bit careless. If the murderer is willing to go another ten meters inside, it is likely to rely on smell and luck when discovered.

But from another perspective, this is also a smart approach. Directly abandoning the corpse a few meters away from the roadside, the traces left by the corpse abandonment itself are very few, and it rained, and the trace examiners almost did not get any useful information.

And in Sun's home, Jiang Yuan, who was trying to find the first scene, never found it.

The two-story house, Sun Xiuwen lived in a room on the east side. The internal furnishings are also very simple, that is, beds, tables, bookcases, wardrobes, etc. If there is anything special, it is nothing more than some girls' dolls.

At this time, even these dolls were turned out, and each one was checked to see if there were traces of suffocating the victim.

"Have you cleaned or replaced the bedding and pillows in this room?" Jiang Yuan called the victim's mother over to ask.

The victim's mother is only 30 years old, crying like rain, shaking her head hard: "No. After Wenwen left, I never moved the things in the room again. In the past few days, the room has been locked."

"What about your husband? Have you replaced or thrown away anything?"

"No, I don't allow him to move."

Jiang Yuan couldn't ask any more questions here, so he had to let the victim's mother leave, and paced in the room again.

He had also seen the other rooms in this house, and there were no traces of murder.

If the stepfather is a suspect, the probability of the room being the first scene should be very large. Because the sexual assault case between acquaintances often happens in places familiar to one or both parties. The murder case that happened at 3 am, even if the crime event is advanced, both parties should have reached bedtime...

Jiang Yuan unwillingly scanned the room again. At this time, he saw several pairs of jeans rolled into balls in the wardrobe.

Picking them up, Jiang Yuan couldn't help frowning.

Sun Xiuwen's room is tidy, and these jeans are not folded or hung up, and there are some stains on them that have not been cleaned.

Jiang Yuan's thoughts moved, turned and pushed open the window, then leaned out to look down.

The stains on the wall are indeed similar.

"Lettuce girl!" Jiang Yuan beckoned to call two people and let them take pictures.