According to Shen Haoran's confession, Jiang Chonglang asked Ye Lili to retrieve the surveillance video of the community where Song Guanguan's house was located. The video shows that on July 4, the day of the crime. Shen Haoran did leave the neighborhood where Song Guanguan lived before 11:00 in the morning, and he was indeed dressed exactly as he described: a dark green shirt, jeans, and black sneakers.

After going out, Shen Haoran turned around and entered a small restaurant next to the road, and came out of the restaurant about half an hour later, after which Shen Haoran called a taxi on the side of the road and left, and did not come back until the evening of the same day.

It seems that Shen Haoran is indeed not a murderer, the direction of the previous investigation is wrong, and it is in vain to work for so many days. Jiang Chonglang, who learned the truth, sat on the stool with a depressed face.

"According to the regulations, we can detain the suspect for no more than 48 hours, and now we have kept Shen Haoran for more than 24 hours, and if there is no new obvious evidence for another 24 hours, we can only release the person."

Seeing her like this, Wen Caiyu stepped forward and said, "Team Jiang, I think we are a bit of a dead end now, and I think that the murderer must be Shen Haoran." However, the evidence of his alibi is obvious, indicating that the murderer is not him at all. We should re-investigate in a different direction. ”

"It's easy to say otherwise, but in terms of the clues we have so far. This is Shen Haoran, who is the most suspicious here, and the other people are Song Guanguan's girlfriends, we have all investigated. They all have alibi evidence, so none of them are murderers. Jiang Chonglang sighed.

Wen Caiyu saw Jiang Chonglang like this, and also fell into thought, and after a few seconds, she suddenly said: "Captain Jiang, I have a suggestion, why don't we go to the crime scene again, when I was in college, Master told us, 'If the investigation of the case encounters a bottleneck, it is better to return to the crime scene and try to restore the process of the crime, maybe there will be new discoveries.'" ’”

Wen Caiyu's proposal, the rest of the serious crime team agreed, anyway, there is no new idea, so it is better to go to the scene of the crime and take a new look. Jiang Chonglang nodded and agreed.

Several people came to Dai Mengzhong and Song Guanguan's home again, which had been sealed as the scene of the crime. So when a few people walked in again, they found that the ground, the sofa, and the bed were covered with a thick layer of dust. Every time Jiang Chonglang and his party took a step forward, they almost had to fan away the dust that was lifted in front of them with their hands, otherwise, their faces would be full of dust and they would not be able to breathe at all.

Walking to the bedroom where Song Guanguan was killed, the blood on the floor inside had coagulated, and the pungent smell of blood could no longer be smelled.

Zhang Lanshan walked to the table at the head of the bed first, there were congealed blood stains on the table, "This blood stain was left by the deceased, in addition, there were no other traces of fighting and struggling at the scene, it seems that she should have been sleeping at the time, after the murderer walked in, grabbed her hair and knocked her unconscious, the whole process did not waste too much time." ”

"The murderer is outside with me, and the deceased is sleeping inside. It shows that the relationship between the murderer and the deceased should be very familiar, and the murderer was still wearing pajamas when he died, which means that she and the murderer have a very close relationship, but who else will there be such a person except her husband and lover. ”

"Let's not think about this first, let's come this time, the main thing is to restore the victimization process of the deceased. As for the relationship between the murderer and the deceased, wait until we restore the whole process, and then consider this issue at the end. ”

Jiang Chonglang nodded and continued to listen to Zhang Lanshan's analysis.

After the murderer knocked Song Wanguan unconscious, he picked her up from the bed. put her on the chair next to the bed, and then tied her up with ropes, these ropes were used by Song Guanguan and Shen Haoran to play the SM bondage game, after the murderer tied Song Guanguan up, and then took out the murder weapon and was ready to start working. ”

"That's right, Team Jiang. When I made a transcript for Dai Mengzhong, he said that there was one less knife on the kitchen board in their kitchen, and the one missing was the longest and widest dagger. So it's very likely that the dagger was the murder weapon. Ye Lili said on the side.

"What are you talking about, the murder weapon is the victim's own dagger, not the murderer." Hearing Xu Meng say this, Jiang Chonglang seemed thoughtful. "If the murderer had premeditated the murder of Song Guanguan for a long time, she would definitely bring her own murder weapon, and she would not go to the scene of the crime to find the murder weapon, so this case may be temporary. If we check the kitchen door, we might be able to find the murderer's fingerprints. ”

"How many times have I said it, we are just restoring the murder process of the deceased now, please don't let this gentleman reason hard and disturb my train of thought." Zhang Lanshan listened to him, and once again couldn't help but roll her eyes at him.

Jiang Chonglang smiled and stuck out his tongue: "Yes, yes." I was wrong, we all supported our leadership, and what the leader meant was what I me. ”

"Team Jiang, I didn't expect you to be married yet. It's 'tracheitis', so what will you do if you get married to Dr. Zhang? Seeing them showing affection so much, Xu Meng couldn't help but quip.

"Don't make trouble, it's working time, show affection, that's no way, is it the reason to work together." Jiang Chonglang refused on the surface, but the expression on his face was clearly written, "I'm willing, can you manage it." ”

Just when a few of them were fighting, Wen Caiyu squatted down and silently carefully examined the blood stains on the ground.

"Xiaowen, do you have any new discoveries when you look at these bloodstains?" Jiang Chonglang looked at her so fascinated.

Wen Caiyu nodded and said thoughtfully: "Team Jiang, last time you showed me the pictures of the scene, I didn't think there was anything abnormal. But now that I'm seeing the blood with my own eyes, I realize that something is not quite right. ”

As he spoke, Wen Caiyu pointed to a pool of blood on the ground that had already solidified and said, "Team Jiang, look, this pool of blood is dripping on the side of the deceased's body, and the place where the murderer is standing should be next to it." Therefore, there is a high probability that the murderer's foot stepped on it. You see there's a straight line here, and it should be the mark that the murderer stepped on after stepping on the bloodstains, and the floor was slippery, so the foot slipped forward. As long as the shoe slips on the blood, it will leave a trace, even if this trace is deliberately destroyed, but he can't hang away, he always has to stand on the ground, so the trace will not be erased completely at all, and the mark will always find a half.

Team Jiang, you showed me the photos of the scene at that time, I observed for a long time, and I actually felt that the murderer had a particularly big foot, and the size was outrageous, it was simply twice the size of ordinary people. So I just thought it was strange at the time, but I didn't know what was going on. Now that I'm at the scene of the crime, I seem to see it. ”

Saying that, Wen Caiyu pointed to the bloodstains and said: "This bloodstain was trampled on by the murderer, but there is no clear shoe print in it, indicating that the murderer actually put something on the shoe to cause the current appearance." ”