"It's very simple, I believe that your police must have collected fingerprints when they learned that Qiao Na's home was the first crime scene, but except for He Dongsheng and Qiao Na's fingerprints, there are no third party fingerprints, otherwise you would not have been so lightly decided. ”

Qiao Zhigang glanced at Jiang Yan with admiration, indeed, they collected fingerprints at Qiao Na's house at that time, and indeed did not find the fingerprints of a third party, so He Dongsheng was listed as the biggest suspect.

The thing is obvious, He Dongsheng already has time witnesses, he is not a murderer, but Qiao Na is dead, and he is not a suicide, then there will definitely be a murderer at the scene, but there is no fingerprint of a third party left at the scene, so it proves that the murderer is wearing gloves.

Since the murderer was wearing gloves, it proved that it was a premeditated murder, or rather, the murderer did not intend to murder in the first place, but had other ulterior motives, but was discovered by Jona, so there was a struggle, and then the murderer was vicious and strangled Joanna to death. ”

"What ulterior motives would the murderer have?"

Jiang Yan glanced at Qiao Zhigang, then pointed at Qiao Na and said: "Everyone has seen that Qiao Na is a very beautiful and fashionable woman, and the murderer is likely to covet her beauty, and he wants to do something wrong, so he killed her in a fit of anger." ”

Although Qiao Zhigang and Jiang Yan were a little wrong, when Jiang Yan said this, he nodded: "I agree with this, because when we found Qiao Na's body, she was disheveled, her hair was disheveled, and her pants were half taken off. ”

"That's right. Jiang Yan nodded: "Another point, since there are traces of struggle at the scene, judging from some of the scars on Qiao Na's body, when the murderer wanted to commit misdeeds, Qiao Na was awake, that is to say, not long after He Dongsheng fed Qiao Na and drank sleeping pills and went out, the murderer appeared, and at that time, the power of sleeping pills had not yet taken effect." ”

Jiang Yan finished speaking. Then he asked, "Captain Joe, are there any signs of damage to the doors or windows of Jona's house?"

"The windows of their house have burglar-proof windows, and the door locks don't show any signs of being broken. Qiao Zhigang now has some admiration for Jiang Yan's reasoning. It is to tell the truth very quickly.

Since the doors and windows have not been damaged, there are two ways for the murderer to enter the door, one is the door that Jona opened for the other party, and the other is that the murderer has the key to their house. But either way, you can see it. This murderer and He Dongsheng Qiao Na are acquaintances, at least the relationship is not ordinary. ”

Hearing Jiang Yan say this, everyone in the classroom showed a look of admiration, and they felt that this case was a bit confusing before, but now after Jiang Yan's reasoning and analysis, the case seems to be gradually becoming clearer.

"Jiang Yan, according to your analysis, then do we have to investigate He Dongsheng and the people Qiao Na is familiar with one by one?" Hearing this, Wang Zhengyi's eyes lit up.

"Brother Wang, don't worry. Perhaps, we can narrow it down a little bit. Jiang Yan shook his head, pondered for a while, and suddenly said: "Since the murderer was wearing gloves, it must have been premeditated, and he stuck the time so accurately, and sneaked into Qiao Na's house shortly after He Dongsheng went out after feeding Qiao Na sleeping pills, it can be seen from this that he clearly knows He Dongsheng's habits, and he knows that He Dongsheng must feed Qiao Na sleeping pills before going out every night." He has coveted Qiao Na's beauty for a long time, and since he knows He Dongsheng's habit of feeding Qiao Na medicine before going out every night, he wants to take advantage of Qiao Na when He Dongsheng is not at home and Qiao Na is sleeping with sleeping pills by He Dongsheng. ”

He wanted to carry out this qiē without knowing it. He shouldn't have asked Qiao Na to open the door, but waited for Qiao Na to open the door and go in after she fell asleep, so he should have prepared a key to He Dongsheng's house privately, but He Dongsheng couldn't be so punctual every time he fed Qiao Na's medicine, so after he opened the door with the prepared key, how did he know that Qiao Na's medicinal power had not yet occurred and he had not slept yet. And so the tragedy happened. ”

Therefore, this murderer is not only an acquaintance with He Dongsheng, but also a person who is usually very close, so close that he can easily copy the key to He Dongsheng's house. ”

"We have investigated, He Dongsheng teaches in Longhua Primary School, he has no relatives and friends, but there are a few good colleagues, Jiang Yan, are we now investigating his colleagues?" Jiang Yan's reasoning was reasonable, and even Qiao Zhigang stopped disagreeing when he heard it, and immediately asked.

Seeing Jiang Yan nodded, Qiao Zhigang immediately took a cadre of criminal policemen and was about to go to Longhua Primary School, but when he walked to the door of the classroom, he heard Jiang Yan say abruptly: "Slow, Captain Qiao, maybe you can narrow the scope a little more!"

Captain Qiao was stunned, Jiang Yan reasoned to this point, the range of target characters is already very small, how can it be reduced?

Jiang Yan pondered for a while, a flash of inspiration had just flashed in his mind, and he did think of one thing. Seeing that everyone in a classroom was staring at him, Jiang Yan said to Wang Zhengyi: "Brother Wang, you received a call before, those parents of students are in the police station, they said that He Dongsheng is pretentious and high, and opening a tutorial class is also a last resort, I believe that he will not sue many people about opening a tutorial class, so few people know that he opened a tutorial class, but this murderer knows the whereabouts of their husband and wife." ”

Indeed, in a certain way, it is not a glorious thing for a teacher to open a tutorial class, because it means making money and earning extra money, and the teacher, as the engineer of the human soul, once contaminated with the smell of copper, it seems that the image of the teacher is not so great. And since He Dongsheng is a pretentious teacher, opening a tutorial class is also a last resort, and he will definitely not sue others, even some good colleagues.

"That's right, when we investigated He Dongsheng before, we didn't know that he also opened a tutorial class, if it wasn't for those parents who came to the police station just now, we would have been kept in the dark, but does this have anything to do with the case?" Qiao Zhigang was stunned for a moment and asked.

"Of course it matters, He Dongsheng opened a tutoring class, and none of your police investigated it, I believe that in addition to Qiao Na and He Dongsheng themselves, there is another person who knows. ”

"It's the murderer!" Wang Zhengyi's eyes froze.

"That's right, the murderer knows He Dongsheng's whereabouts well, and he must know that he goes out every night to go to the tutorial class, so that the scope of our target is much smaller. ”

"Who is it?" Seeing that the murderer was about to come out, the people in the classroom didn't dare to come out, and they all stared at Jiang Yan quite nervously, wanting to wait for him to reveal the answer.

I once posted a message to ask for a trick but it didn't appear in the article.,Trouble to post a post in the book review area again.,Because the post to be a trick has sunk and can't be found.。 (To be continued.) )