In the process of eating noodles, Lao Lu received a call from the criminal investigation team, saying that the surveillance video around the gas poisoning case had been retrieved and asked him to go back to the team to take a look. So after eating noodles, Lao Lu took us and drove to the criminal investigation team.

In front of the gate of the criminal investigation team, I met the young police officer who had been investigating the case of a child falling into a well with Lao Lu. As soon as he saw me, he greeted me very warmly, and of course I responded very politely.

The gas poisoning case was a strange case, so Lao Lu was all trapped in the case at this time, and went straight to the technical department when he entered the gate. Tang Zhenguo and I followed, and the young police officer also followed, and it seems that he was also involved in the investigation of this gas poisoning case.

In the technical department, the technicians called up a copy of the surveillance video around 1709A on Beishan Road. The technicians said that it took them a lot of effort to find the video materials, because the crime site is not a community-style management, and there is no special property, so they can only find the video materials from the surrounding surveillance probes that can be visually detected. There are four pieces of information, two of which are monitored by the public security system, one is in front of a bank, and one is in front of a hot pot restaurant.

Lao Lu nodded, supported the computer desk with one hand, turned his head and said, "Xiao Xia, Xu Tianwu's confession was recorded by you, did he say when he went to the deceased's house?" ”

Xiao Xia was the young policeman we met in front of the gate, and he replied, "It was about half past five yesterday afternoon. ”

Lao Lu hummed and said to the technicians: "Open the four monitoring data at the same time, and the time period is set from 5 pm to 5:40 pm yesterday." ”

The technicians skillfully opened the four copies of the monitoring data on separate screens, and at the same time displayed the documents on the large screen of the technical department.

We all shifted our eyes to the big screen, and all four documents were clear. Among them, the bank monitoring data appeared at 17:19 Xu Tianwu and Wu Qiguo, both of whom were carrying a large package, apparently their tool kit, in which Xu Tianwu was also carrying a white plastic bag in his hand, which should be a bag containing braised vegetables.

At 17:21, the two appeared on the surveillance video of the hot pot restaurant; At 17:25 and 17:28, they appeared on the surveillance video of the public security system. Judging from the video, there are no valid clues.

Lao Lu clasped his hands to his chest, frowned and said, "These surveillance data don't seem to have any value. ”

I slowly walked up to the technician and said, "Comrade, can you set the time between 7:30 and 8:30 in the evening?" ”

When Lao Lu heard this, he turned his head and said, "Yes, look at the woman who came and left in a hurry." ”

The time of the four surveillance footage was set, but we watched it for a full hour, and we didn't see a suspicious woman wearing high heels.

Just when we were feeling a little disappointed, Tang Zhenguo suddenly said: "I seem to have seen Xu Tianwu's wife in the surveillance screen of the hot pot restaurant." ”

Lao Lu and I looked at Tang Zhenguo at the same time, and I hurriedly asked, "What time period?" ”

"It should be around eight one-ten."

Without waiting for Lao Lu to speak, the technician had already enlarged the monitoring of the hot pot restaurant in full screen and set the time period at 20:07.

At this time, most of the surveillance footage of the hot pot restaurant is a blue cloth tent, which is a 2X3-meter large tent that is open at night and used to block the wind and rain after the sidewalk expands the seats.

At 20:09, Tang Zhenguo suddenly shouted: "This is it." Oops, it's over, go back. Good! ”

The monitoring time was reverted to 20:08:57 and paused, at which time Tang Zhenguo pointed to the far left of the surveillance screen and said: "You see, the woman who is about to walk behind the tent does not look like Xu Tianwu's wife." ”

We all looked at the still picture, because at night, the surveillance picture is not very clear, but from the hairstyle and clothing, it is indeed a little similar to Xu Tianwu's wife, but it cannot be 100% certain.

However, I was surprised by this woman's behavior, because the blue tent of the hot pot restaurant is next to a passage for pedestrians, and the road behind the tent is full of diners' cars, so it is not convenient to choose that road. And I knew that the direction the woman was coming was from the bus stop, and there was an open sidewalk. According to the trajectory of the average person, she should walk in a straight line, and if she walked in a straight line, then she was walking in front of the lane where the bus stopped. However, it is obvious that a bus is passing by the hot pot restaurant on the screen, which shows that it was impossible for her to walk in front of the bus lane before. So she could only walk on the sidewalk, but why did she change her route and choose to walk behind the tent instead of the aisle between the tents? I don't think she's afraid of the smell of hot pot! Maybe it's because I'm thinking too much, but sometimes it's not a bad thing to think too much about criminal investigation work.

Lao Lu spoke at this time: "Comrade bodyguard, I admire your observation, but I admire your imagination even more. With this blurry picture, can you be sure that this is Xu Tianwu's wife? ”

Tang Zhenguo didn't pay attention to Lao Lu, stared at the corner of the picture with a pair of eagle-like eyes, and said word by word: "I can be 100% sure." ”

"Handling cases is based on tangible evidence, and this vague picture cannot prove anything." Lao Lu said impatiently.

I listened to their conversation, and I felt that Tang Zhenguo was getting more and more interesting. I didn't doubt his words, because I didn't doubt his eyes. A year ago, he was the chief knifeman of the famous circus, the Red Sun Circus, can I question the eyes of a knifeman? No.

Of course, this also reminds me. If the old woman of 301 did hear the sound of a woman leaving, then there should be a suspicious woman in high heels on several surveillance screens, but no, this is a big suspicion.

It is not difficult to solve this suspicion, so I said to Lao Lu: "Lao Lu, I have to go back to the scene of the crime again, do you want to go with me?" ”

"It's okay, anyway, I can't see the reason here, so let's go quickly. Xiao Xia, take a closer look at the monitoring and see if there is anything missing? After Lao Lu finished speaking, he waved his hand and signaled to go. I said to go to the bathroom, Tang Zhenguo said together, and Lao Lu went to start the car first.

As soon as Tang Zhenguo and I arrived at the bathroom, Xiao Xia followed. He mysteriously came to my side and said: "Brother Ouyang, the case of that child falling into the well has been solved, and you have said that tiger poison does not eat children, and I will have to put a question mark in the future!" ”

Tang Zhenguo and I listened to WC at the same time. Xiao Xia continued: "The child had blood cancer, and her family was poor and had no money for treatment, so the whole family discussed drowning the child and deliberately faked the death scene. The child died a pitiful death, her father had drowned her in a bathtub filled with water with his own hands, and her mother and grandparents were watching. Oh my God, I really can't imagine this, it's horrible. ”

Tang Zhenguo and I were silent, because I couldn't imagine the scene either. Sin is beyond the imagination of mortals.

We said goodbye to Xiao Xia and walked to the gate, I already saw Lao Lu's car, and I heard Tang Zhenguo muttering: "Damn, this kind of person is not worthy of being a father, and dying ten thousand times is not enough." ”

I patted Tang Zhenguo on the shoulder and said, "My purpose is to expose such people, and the law will give them the punishment they deserve." ”

Tang Zhenguo nodded. I said again, "I believe you're right." Then he strode towards Lao Lu's car.

The road was smooth, and we soon came to Beishan Road again. However, I didn't go directly to the scene of the crime, but let Lao Lu stop at the door of the bank.

The three of us got out of the car and I observed the bank's surveillance and the terrain outside the bank's gates. Nothing special except that the sidewalks are relatively wide.

Walked to the door of the hot pot restaurant, because it was still early, the blue tent in the night market had not yet been erected, and the sidewalk still looked wide.

As we walked on, I kept an eye on the surrounding shops and didn't see any surveillance footage. At a fork in the road, not far up from here is the residential building where the crime was found.

But I didn't go up, but crossed the road. Lao Lu and Tang Zhenguo also followed behind without knowing what to do, and I heard Lao Lu whispering to Tang Zhenguo: "Don't ask long questions, this is Ouyang's style of doing things, and he will naturally tell me when he has the result." ”

From here, I walked all the way to the store opposite the bank, and I found that five of the stores here were equipped with surveillance, which was one step closer to my inference.

I crossed the street again and walked to the bus stop in front of me (the next stop at the hot pot restaurant bus station), and there was no surveillance all the way. So he turned around and hurriedly trotted all the way to the fork in the road where he entered the scene of the crime. The fork in the road is still relatively wide, and the surveillance video of the public security system is at the intersection.

I walked further and found an Internet café on the side of the road, I entered the Internet café and found that the Internet café was monitored indoors, and the Internet café had another exit to the sidewalk outside.

So I went out through another exit, turned back to the fork in the road, and continued towards the scene of the crime.

At this time, I entered the residential alley, about 80 meters away from the residential building where the crime occurred, and I saw the last surveillance.

This surveillance must have covered the path in this residential area, but there was a small garden next to the path, so I went into the small garden and looked down.

Sure enough, I found what I was looking for, which was a high-heeled shoe print.

I hurriedly rushed out of the small garden and said to Lao Lu: "Follow me to see the monitoring of the Internet café, everything will be understood." ”

Lao Lu showed his police ID, but the owner of the Internet café was still very cooperative with us. From the surveillance, I really found the person I was looking for, that is, Xu Tianwu's wife. The surveillance showed that at 20:05 yesterday, Xu Tianwu's wife hurriedly entered the Internet café and then went out through the exit to the sidewalk.

We took a picture of the woman on the surveillance screen with our mobile phones, and then found the old woman of 301, who confirmed that this woman was a woman who was good with Wu Qiguo.

Proving this, I said to Lao Lu: "It seems that the case can basically be over, and the motive for the murder is that Wu Qiguo gave Xu Tianwu a green hat, and Xu Tianwu waited for an opportunity to kill Wu Qiguo in order to take revenge." The reason why Xu Tianwu's wife can't be seen in the four surveillances is because she deliberately avoided the surveillance range, as a woman who has an affair, she is indeed very shrewd and careful. From the scene of the crime to the four surveillances of the bank, the first is to go into the small garden to avoid it, which can be seen from the high-heeled shoe prints in the garden; The second is to go through this Internet café, but this is where she is smart but is mistaken by her cleverness, she thinks that no one will investigate the surveillance in the Internet café, so she chooses this route; The monitoring of hot pot restaurants and banks is easy to dodge, as long as you walk on the road, you will get out of the monitoring range. And the reason why she didn't go to the opposite road to avoid surveillance was because there were more surveillance videos on the opposite side. Judging from the distance she has walked, it is clear that she chose the bus to travel, but why not choose the nearest bus stop, but choose the farther one. I guess she is also avoiding the place of derailment, because she has to wait for the bus, and if she meets an acquaintance during this time period, she may be able to explain her trip, so the farther away from the place of derailment, the better. ”

Lao Lu frowned and said: "You say so much, it can only prove that Xu Tianwu's wife cheated, but it can't prove that Xu Tianwu killed Wu Qiguo?" ”

Tang Zhenguo also said: "Yes! And this woman is cheating, why do you go to all the trouble to avoid surveillance? ”

I said, "This is the motive for murder, and I say all this just to show that women do have extraordinary IQs when they cheat." She hid from the surveillance, and I thought there was only one possibility, to be careful to sail the ship of ten thousand years. If we want to really prove Xu Tianwu's guilt, let's hurry to the hospital, and I can prove Xu Tianwu's guilt on the spot. ”

So, the three of us drove to the central hospital again.