There is no need to look through the photos of the scene at that time again, Xiao Ran has already imprinted the situation of the deceased in the '7.2' case in his mind.

Recalling the wounds on the deceased's body, it can be judged that the knife used by the murderer to disembowel at that time was not so sharp, and the autopsy report also stated that the surface membrane of muscle, fat, and internal organs was cut layer by layer.

By the time it was completely disemboweled, the corpse's chest and abdomen had been cut out of shape, and the internal organs had been destroyed.

From this point of view, does this mean that the murderer was a complete novice before committing this case, although he seemed to have been planning for a long time, but when he actually carried it out, he was stimulated by the strong visual impact and vomited.

If this is the case, maybe the murderer has not completely perverted, but judging from his behavior, it seems to have some kind of purpose and compulsion, as if he is trying to force himself to get closer to the vicious images in the movie.

It is assumed that the murderer is not related to the deceased's family.

So is the murderer trying so hard to control himself to commit cruel acts, simply attracted by the image of sin, or just to prove something, in order to obtain inner pleasure?

......

After leaving the scene of the '7.2' crime, Xiao Ran and the others went to the detention center and sent the bag of toilet water mixed with unknown residue to the technical center.

As for whether the result can be detected, it can only be left to luck.

After a brief lunch at a roadside restaurant, the group went to the detention center, showed their arraignment certificates, and soon after arriving at the designated interrogation room, a man with a dull expression and greasy hair was brought in by two police officers.

He is Cheng Yuguo, the husband of the deceased Li Lu, an innocent unlucky bastard.

Although he already knew in his heart that Cheng Yuguo did not kill his wife, Xiao Ran still couldn't do anything for the time being, after all, there was no evidence in his hands.

According to normal logic, Cheng Yuguo is still the number one suspect, and only by finding the real murderer as soon as possible can Cheng Yuguo be innocent, and now, Cheng Yuguo has to be wronged for some more time.

Maybe it was because he had been interrogated too many times, Cheng Yuguo had just been brought into the interrogation room, and before he could sit down, he called out earnestly to Xiao Ran and them: "I didn't kill anyone, you believe me, my wife really didn't kill me, it's really not ......."

Before he finished speaking, Cheng Yuguo was already on the verge of collapse and cried.

Xiao Ran knew that Cheng Yuguo was not a murderer, so his words would naturally not be so harsh, he took out a cigarette and asked the police officer in the fence to hand it to Cheng Yuguo, who was bearded, and only after Cheng Yuguo's mood gradually calmed down did he talk.

"Cheng Yuguo, at around 0:00 p.m. on July 2nd, after you left the house, were you really just walking on the road?"

Cheng Yuguo raised his head suddenly, Xiao Ran's tone and attitude made him a little uncomfortable, when he was arraigned before, the interrogator would never speak so softly at first, and no one believed that he was really wandering on the road.

As soon as that blank time was mentioned, the interrogator interrupted him and told him to stop quibbling.

Looking at the three interrogators in front of him who had never seen them before and were particularly young, Cheng Yuguo's eyes gave birth to a small hope.

He nodded vigorously and shouted, "Really, I was really walking around on the road, at that time, I, I was messing around, and I didn't know why I walked for so long, and I was going to the Internet café quickly." ”

"For half an hour, you've been walking on the road?" Xiao Ran accentuated.

At that time, it was raining in the sky, and if Cheng Yuguo had really walked on the road for so long, his body would have been drenched, but Xiao Ran could see from the photos taken from the surveillance video that when Cheng Yuguo entered the Internet café, most of the clothes on his body were still dry.

Cheng Yuguo was stunned, then shook his head and said, "No, I stopped and stopped, and when it rained heavily for a while, I hid under the eaves of other people's houses and smoked...... I was like, I can't go on like that, and I'm going to get a job next month......"

As he spoke, Cheng Yuguo howled and cried again: "I...... I'm nothing left now......"

Xiao Ran knocked on the table, kept his emotions in check, and continued to ask: "Okay, then let me ask you, before you left home, where did you and your wife Li Lu quarrel at your house?"

"Where is the quarrel?...... It's a bedroom on the second floor of our house. Cheng Yuguo thought about it and said.

"Then what did you say to Li Lu before you left home? Before you went out, was Li Lu upstairs or downstairs?"

"I was ...... It seems to mean that if I don't let me play at home, I'll go out to play. Then she told me to get out. ”

Cheng Yuguo thought for a while before he said intermittently: "When I went out, she seemed to have gone downstairs...... I don't remember too clearly, she should have gone downstairs, there is a problem with the lock of our door, and the slot that closes the door with your hand is broken, and you have to use your hands to close it. ”

Xiao Ran's eyes moved slightly, if the murderer had planned a long time ago and was already waiting for an opportunity to move, then when Cheng Yuguo went out, he should have been taken into the eyes of the murderer, and Li Lu died on the first floor, it can be inferred that Li Lu should have come down from the upper floor to close the door at that time.

So at this time, from the time the deceased Li Lu went downstairs to close the door, to the murderer breaking through the door, the time when Cheng Yuguo left should be very close.

Of course, it is not excluded that the murderer happened to pass by, and the victim Li Lu also remembered to close the door after Cheng Yuguo left for a while, and the two happened to bump into each other, causing the murderer to temporarily move.

But in the remote location where Cheng Yuguo and they lived, at 0:00 o'clock in the evening, except for the surrounding neighbors, who would walk past their door?

If the murderer really lived around Cheng Yuguo's house, it would be impossible for the task force not to notice it.

Xiao Ran secretly paid attention to it, recorded it in his notebook, and after returning to the Chengdong Branch, he wanted to read all the visit records around the crime scene.

However, if it is the first case, the murderer broke into Cheng Yuguo's house as soon as he left, and Cheng Yuguo didn't walk quickly......

Xiao Ran immediately asked, "After you left the house at that time, did you hear anything unusual? Around your house, did you see people who behaved strangely?"

"Anomaly?"

Cheng Yuguo thought for a while, shook his head and said, "No, I really didn't hear any movement after I left, all I heard was the sound of rain." And I didn't notice anyone next to my house at the time, I really didn't see anybody, I didn't meet anyone along the way. ”

Xiao Ran nodded and didn't say much.

He didn't have any hope in his heart, after all, there were all kinds of small roads and alleys around Cheng Yuguo's residence, and there was no street light at night, and he was hiding at the intersection of a small road and watching Cheng Yuguo's family, if it wasn't for the coincidence that he bumped into, ordinary people really couldn't notice it.

Coming out of the detention center, Xiao Ran looked at the gloomy sky above his head, and had to say that the murderer this time was indeed cunning and had a strong sense of anti-reconnaissance.

When I returned to the Chengdong Branch again, it was already half past three in the afternoon.

Coincidentally, the case that just broke out today has already had preliminary investigation results at this time......