novice forensic medicine

Chapter 169 You Come and Try
An hour later, Shanhai Xiaozhu.

Xiao Zeng wandered around here for a long time, and was fairly familiar with the scene, so he moved closer to Xu Dayuan.

Speaking of the results of the investigation of Mr. Chen, it turned out that he was also extorted a sum of money, and the conditions for leaving were even more unbelievable. Help her find a next home and continue to work as a senior nanny.

Xu Dayuan asked Xiao Zeng to contact Liu Yinuo, the nanny, whether she was a chicken or a nanny, at least to verify the time of the crime, and then Xu Dayuan left, taking many people with him.

Da Zhao looked at the direction the car was going away and kept shaking his head.

"The leader is on top."

"I guess we need to investigate Luo Qian. We have some preconceived ideas. We always feel that this person is going to help Dong Chengwen with the lawsuit, so we have less doubts about her. But case investigation is not a guessing game. We need to find out every suspect. .

Stop talking nonsense and start working. Although the backyard was surveyed last time, nothing was found. If people stand in the backyard and throw Molotov cocktails, there will be traces to follow when they leave. We will search and monitor dead spots this time. "

Several people nodded one after another, and Yang Xuetong led Zhu Xingxing and Sun Gaotie to the other side of the bush fence. After all, if you want to search in a blanket manner, you can't miss any corner.

Da Zhao didn't participate. He grabbed a pebble on the ground, stood on the northernmost edge of the bush, and glanced at the monitoring position. He couldn't see it at all.

He raised his hand and threw it towards the window of the cloakroom on the second floor. With a swish, the pebbles flew into the window, and they entered against the upper edge of the window.

Zhou Ning took a look, Da Zhao has a good physique, but he is not strong in strength. When they wrestled their arms before, Sun Gaotie easily defeated him. Since he can throw in, women should be able to do it too.

Zhou Ning picked up a pebble and called Zhu Xingxing over. Zhu Xingxing was stunned, thinking that he had done something wrong, and looked at Zhou Ning cautiously.

"What's wrong, team leader?"

"Here, imitate what Da Zhao did just now, and throw the stone into the cloakroom window, see if you can do it?"

Zhu Xingxing let out an oh, stood where Da Zhao was, and threw the stone lightly, and the stone flew into the room.

"If you throw an object weighing two catties, stand at the farthest northeast corner, do you think it can be thrown in?"

Da Zhao became interested. He knew that Zhou Ning wanted to test whether a woman could complete this action.

"Wait, I'll find something for you."

As he said that, he ran away quickly, and came back with a large mineral water bottle in his arms, and stuffed it directly into Zhu Xingxing's arms.

"It's not such a good weight, this one is 1.3 liters, how about I drink some?"

Zhou Ning rolled his eyes, but before he spoke, Zhu Xingxing was already standing in the northeast corner and raised his hand, throwing the bottle in without even touching the window frame.

Da Zhao turned his head to look at Zhu Xingxing, he was dumbfounded, and kept looking up and down at Zhu Xingxing.

"You look skinny, why are you so energetic?"

Zhu Xingxing was stunned and looked at Zhou Ning suspiciously.

"Group leader, should I throw it in, or shouldn't I throw it in?"

Da Zhao raised his head and laughed loudly. After laughing enough, he dragged Zhu Xingxing out of the way.

"What Zhou Xiaozhou means is, find a girl to try. Is it difficult to throw at this height? It's too easy for you to throw."

Zhu Xingxing rubbed his nose, poked his neck towards Da Zhaogeng, and lost the bewildered state just now.

"Men with explosive power are naturally dominant, but this kind of throwing does not require a lot of strength. Let alone a forensic doctor, even a nurse breaks an ampoule and throws it into the trash can every day. The accuracy is beyond the reach of ordinary people. And the teacher, the chalk head Don't say you haven't tasted the power of it?"

Da Zhao rubbed his nose and lowered his head, but Zhou Ning nodded affirmatively.

"Xiao Zhu is right. Professional habits and behavioral habits are indeed an aspect to consider. But we have been experimenting for a long time, and the front and back surveillance from this angle can't capture it. But how to leave this courtyard? Climb over these bush walls? "

In a word, several people looked at the shrub wall. This community has been built for three or four years. These shrub walls are very tall and airtight. There is an iron fence in the middle, and the surrounding shrubs grow around them. Not to mention summer, it is completely winter. You can't see the outside. With such a double-layer structure, how can people just find a gap to get out.

"I said Zhou Xiaozhou, don't think about going through the bush wall. There is no gap, and it is even more impossible to turn over. I can't even touch the top at my height. How can I turn over? Besides, when I turn over, the surveillance will see that this direction is wrong! "

Zhou Ning stared at the north door of the villa. This door is a stainless steel anti-theft door with double-glazed glass, which is quite exquisite and beautiful. Although this location is under the cloakroom, the fire has not engulfed it, so the glass on this door is not broken.

"Have you taken fingerprints at the North Gate?"

Yang Xuetong came over, raised his hand and said:
"The last survey was collected by me, and no fingerprints were found on the north gate."

Yang Xuetong nodded very positively.

"No fingerprints were found, and the handles inside and outside the door were covered with dust. After I scanned and collected them, I only found some circle marks, not traces of thread gloves or latex gloves.

I made a record. When summarizing, there was no such option in the form, so I didn't fill it out at the time, but it can be concluded that this door was carefully cleaned before the fire, the team leader, look. "

Yang Xuetong's voice has become smaller and smaller. He feels that there is no special discovery and he did not report it in time. At the moment, he has no confidence. Zhou Ning did not say a word of reproach, and zoomed in on the tablet picture he handed over.

This mark is not big, no more than 1.7 cm in length, with irregular dots and rubbing marks on it. Zhou Ning thought for a while, and his eyes lit up.

"It's the imprint of a towel. Whether it's a latex glove or a thread glove, it's awkward to appear at this fire scene. The towel imprint is different, and it is easy to be ignored as a trace of cleaning. With this length and position, I am afraid that someone pressed it with a towel." Get off the doorknob."

Da Zhao leaned over and extracted the traces. Zhou Ning closed his eyes, and a person seemed to appear in front of him. He covered his face with one hand and put a towel on the other. He opened the door and rushed into the villa, then went directly downstairs and left from the garage. Zhou Ning opened his eyes. Eye said firmly:

"After throwing Molotov cocktails, if you want to avoid being recorded by surveillance, it is unrealistic to walk through the main entrance or over the wall, so there is only one way left, enter through the kitchen door, and then leave from the basement. As long as you avoid the surveillance, you will not be able to leave traces .”

Zhou Ning paused, Da Zhao looked disbelieving, pointed at the north gate and said:

"It's locked."

Zhu Xingxing looked excited, and she said first:
"I think there are many people who have keys. The two nannies, Dong Chengwen, Fang Hua, and the housekeeper. Of course, there is no spare key for such a big house, right?"

Zhou Ning narrowed his eyes, a spare key?

Not to mention forgetting this, at that time in the utility room on the first floor, there was a wall with a lot of things, and the fuel ticket was found there.

Yang Xuetong stretched his head and said doubtfully:
"If you leave the garage, can the surveillance fail to capture it? All the surveillance footage extracted on June 6, not to mention the Jingkou sub-bureau, even Xu Da, they have screened it several times, and they didn't find anyone going out of the underground garage?"

Zhou Ning waved his hand and dialed Xiao Qu's phone.

"We have arrived at Shanhai Xiaozhu, and we need to do an experiment. You said before that if I let someone do something, I can control and monitor it remotely, right?"

"Yes, I gave Sun Gaotie a box similar to a power bank and asked him to go to the monitoring room, and I told him how to plug it in."

"Okay, you will find us from the surveillance in a while, and compare it with the previous surveillance on the 29th to see if you can see us."

After hanging up the phone, Sun Gaotie had already raised the bag in his hand. Just now Zhou Ning answered the call hands-free. He knew it was time to play by himself, and Sun Gaotie was very excited to be able to complete one thing alone.

"Team leader, I'm going to the monitoring room. Brother Qu has already told me what to do."

Zhou Ning nodded, and Sun Gaotie ran away. They put on their shoe covers and were armed. They entered the villa through the north gate. Zhou Ning pressed the timer on his mobile phone, bypassed the stairs, and went straight to the utility room.

Next to the table where Dong Chengwen's coat was found, there is a message wall with several small hooks in the shape of artistic antlers. There are three bunches of keys hanging on it, one of which has a self-adhesive sticker on it.

Zhou Ning took them down and looked at them one by one. The back door, garage, master bedroom, study room, children's room, and guest room were marked on them. Obviously, this was the spare key. Although the other two sets were not marked, the keys were exactly the same.

"Sure enough, there is a spare key."

Yang Xuetong opened the physical evidence bag and threw all three bunches of keys into it, but it was unlikely that any clues could be found on it. They all knew that the murderer had strong anti-detection capabilities, and they all knew that there was a towel on the door. How could there be any clues on it? what trace.

"Throw the Molotov cocktail, then send back the spare key, go downstairs, let's go down and have a look."

Several people followed Zhou Ning downstairs, passed through the security door on the basement floor, and came to the garage. Zhou Ning glanced at the time, they stayed for a while, and it took only 1 minute.

Just as Zhu Xingxing was going to press the button of the rolling door on the wall, Yang Xuetong stopped her.

"Forensic doctor Zhu, don't worry, I'll take a sample first."

Da Zhao waved his hand.

"I have already sampled here. The fingerprints of Fang Hua and Dong Chengwen were found on the button. As for the handle of the door, there are also two palm prints and some circle marks. According to Zhou Ning's analysis, I am afraid it is the murderer. Use a towel to pad the handle, open the door, but why can't the surveillance camera capture it?"

Zhou Ning opened the security door.

"Don't worry, try it and you'll know!"

(End of this chapter)