Leng Tong and I waited for a while until Wu Xinmin calmed down, then asked the police officer to wipe the blood stains for him and pour him another glass of water.

Only then did I speak: "Wu Xinmin, why did you kill people? What have you been stimulated in the past? Can you tell us now? ”

Wu Xinmin stretched out his bloodstained hand, trembled and grabbed the teacup on the table, took a sip, seemed to feel better, and didn't ask the two of us for evidence, stared directly at the two of us and said slowly: "Speaking of which, it's my dead wife, I'm sorry for her, otherwise I wouldn't have come this far, I really didn't kill people with intentions, you must believe me!" ”

Leng Tong and I glanced at each other, but I didn't expect it to be because of his wife, it seems that Wu Xinmin is ready to confess.

"We believe you didn't kill someone with intent on it." I thought about it for a while before I said in a flat tone: "Maybe you didn't think about killing someone before you walked into the hardware store for the first time, we can all believe it, you better talk about your wife." ”

Wu Xinmin nodded, seemed to be calmer again, and then lowered his head and said: "My wife's name is Jiang Li, in the five years we have been married, the relationship has been very good for the first four years, and then I heard some rumors that she is messing around outside, although I haven't caught it, and I am angry in my heart." ”

Leng Tong and I didn't interrupt, and Wu Xinmin continued.

Wu Xinmin has had an obsessive-compulsive disorder since he was a child, that is, when he sees things that are not pleasing to the eye, he can't let go of it, and he always has to correct it.

The first manifestation is, for example, if you see some wrinkles in the sheets, you always have to smooth them, and if you see something hanging on the outside of the trash can, you have to stuff things in, which is not very serious.

is from Wu Xinmin after hearing that his wife is messing around outside, no matter how he looks at his wife, it is not pleasing to the eye, and his wife is the kind of arrogant character, usually throwing things around, socks are always one by one, and the other is not found, and when he goes home, he always throws his shoes around, one stands, and the other is upside down.

Wu Xinmin was also upset, and the two quarreled several times.

Wife Jiang Li has a straightforward personality and is also very spicy, that night the two of them fell asleep because of the fact that one of the shoes was upside down, Wu Xinmin saw this situation and immediately asked his wife to get up and get it right, Jiang Li naturally complained that Wu Xinmin was troubled and sick, and the two of them fought together when they quarreled.

Wu Xinmin covered Jiang Li with the quilt and pinched Jiang Li's neck vigorously, until Jiang Li stopped struggling and lifted the quilt, only to see that Jiang Li was already blue and angry.

Wu Xinmin was also so frightened that he didn't know how to end it, and stayed for a long time before he remembered that his wife Jiang Li had always had a slight heart attack, so he thought of pushing the matter to a heart attack, and hurriedly picked up his wife's body and went to the hospital.

In fact, Jiang Li did have some heart disease, and she should have had a heart attack that day, she had been out of breath for a long time, and she naturally couldn't be rescued in the hospital, plus the relationship between the two people has always been good, and no one even doubted her mother's family, but Wu Xinmin escaped the punishment of the law.

I thought that the matter would pass like this, but at Jiang Li's funeral, Wu Xinmin unexpectedly heard Jiang Li's colleague whispering, that Jiang Li, who broke her shoes all day long and seduced her husband, did not die, but Jiang Li, who had such a good character, died, God is really a little unfair.

When Wu Xinmin heard this, he fainted on the spot!

Everyone thought that Wu Xinmin was too sad, but after Wu Xinmin woke up, everyone said that Wu Xinmin had a deep relationship with his husband and wife and was a good person, which made Wu Xinmin regret it even more!

Afterwards, Wu Xinmin calmed down for a while, and also got to know the people in Jiang Li's unit, and then he realized that he was indeed wrong to blame his wife, and it was Jiang Li who had the same name in their unit messing around.

Wu Xinmin said this in one breath, then he trembled again, sobbed and said: "I feel very remorseful in my heart, I don't dare to say it, it's all the obsessive-compulsive disorder that hurts people, which made me kill my dear wife by mistake, I hate my obsessive-compulsive disorder to the core, but it's getting worse and worse!" ”

When Leng Tong and I heard this, we both understood what was going on, Wu Xinmin did have a hidden illness in his heart, but he didn't expect the source to be so tortuous, and another life was involved!

"Later, I didn't seem to have anything on the surface, but once I encountered something that I couldn't stand in my heart, I couldn't help but feel irritable in my heart, thinking of my dead wife, and then even manic, difficult to control!" Wu Xinmin's face was full of pain, and then said: "That day, I went to the hardware store, I wanted to buy a pair of gloves and left!" ”

Wu Xinmin then told us.

Wu Xinmin's time was just right, he went to work when he bought something, and he saw the boss's son cutting his nails, and it was cut flat in the front, which was the same way as his wife Jiang Li when she was alive!

Wu Xinmin once warned his wife, don't cut your nails like this, it's not good-looking, but his wife didn't listen at all, this time it evoked Wu Xinmin's memories, his heart was manic, his hands were trembling, and he immediately told the boss's son, don't cut your nails like this.

The boss's son naturally didn't listen, and asked Wu Xinmin what to buy, if he didn't buy it, he would leave, don't be nosy, and cut it as much as he likes!

Wu Xinmin really couldn't control himself, so he immediately pounced on and strangled the neck of the boss's son, almost using all his strength, he usually worked often, but he didn't have to say anything about his strength, and he started suddenly, the boss's son barely struggled, he lost his strength, and was soon strangled to death by Wu Xinmin.

After killing the boss's son, Wu Xinmin gradually calmed down and hurriedly fled.

As for the second case, as we analyzed, Wu Xinmin came out early that day, and there was nothing to eat at home, so he wanted to eat a bowl of noodles and go to work, knowing that there was a noodle restaurant there, he rushed to the noodle restaurant at 11:15, thinking that half an hour would be about the same, and the shift was just right.

When I came in, I saw the boss lady in the puzzle, and asked briefly, the boss said that she would immediately call the boss to get up and make noodles, but at this time, Wu Xinmin saw that there was a problem with the puzzle, and there were two pieces that were wrong, and the boss lady did not listen after pointing it out, resulting in another loss of control!

The last case is also about the same as we speculated.

Wu Xinmin also knew that he was sick, and he was wearing white gloves at any time, and he happened to be going to take over the shift and defend himself.

Leng Tong and I both noticed that Wu Xinmin was still trembling whenever he talked about what the victim was doing, and he could understand the situation at that time, it was indeed difficult to suppress, and he had the idea of killing people on the spot.

After Wu Xinmin finished speaking, he held his head in his hands, leaned over the table and cried bitterly.

I feel in my heart that Wu Xinmin is not a murderer in the pure sense, but a patient with a hidden disease, and he is a patient with mental illness, and it was difficult to control his emotions at that time, but murder is murder after all, and these things are not under our control, there is a special appraisal agency, and we only need to be responsible for figuring out the facts of the case.

Only then did I say, "Wu Xinmin, calm down." After the last case, you don't think there is any need to hide anymore, and there is a valid reason, swaggering to work, only to be caught by the patrolling police? ”

"That's right! I don't think I'm a murderer! Wu Xinmin immediately raised his head and said: "They deserve to die, I seem to be avenging my wife, you don't know, at the moment when I killed someone, I thought so in my heart, and blame them, I shouldn't have listened to my advice, if my wife had listened to my advice, she wouldn't have died!" ”

The facts of the case are completely clear, I see that Wu Xinmin is also a little crazy when he speaks, there is no need to interrogate again, so I looked at Leng Tong's beauty.

Leng Tong probably didn't expect that it would be such a murderer, and he was also involved in another murder case, and he still had a slight mental problem, so he thought about it before asking: "Wu Xinmin, after you killed the girl that day, did you rush to the Sanjiang Hotel at 11:57?" ”

Wu Xinmin had calmed down slightly, nodded and said, "Yes, after I killed someone, I couldn't help but change my homework, and then returned to the unit to take over." ”

The two of us looked at each other, and everything was clear, and we hadn't chased the wrong person that day, and we both stood up.

I don't know when a large group of people have gathered at the door, all of them are from the police station, everyone is in a daze, seeing us come out, they have come back to their senses, Yang Ju took the lead in applauding!

At this time, together with the two elders, they applauded us at the door, which made the two of us a little embarrassed, and Leng Tong's face was even more red.

Huang Lao laughed and said: "Two heroes, this case is really beyond everyone's expectations, how are you sure that this Wu Xinmin is the murderer?" ”

"yes!" Yang Ju also said with some shame: "If it weren't for Xiao Leizi's loud shout, I would have almost taken three cases······ No, it's the murderers of the four homicides who let it go! ”

Dong Lao said with a smile: "The case has also been solved, let's go to the conference room over there and say, this case has to be talked about well!" ”

Team Xing's face was full of smiles, and they nodded again and again, and everyone came to the small conference room together.

Naturally, the two of us couldn't sit in the middle, and Yang Ju was not reluctant, so he let the Xing team sit down next to the two elders.

Team Xing said with a smile on his face: "Xiaoxiao, Xiaoleng, you two will tell us about this case from beginning to end, how did you deduce it this time?" ”

I knew that Leng Tong would not say it, everyone was waiting, so I said: "This case is indeed very difficult, at first our inference was that the time and place were the same, Tongtong put forward an idealized idea, first, the two cases occurred on Jingwei Street, proving that the murderer often haunts Jingwei Street, and second, the time of the two crimes was at the same time period. ”

Everyone nodded their heads, and everyone knows these two points, and they are also obvious.

I went on to talk about our idealized assumptions, and there must be a reason for some things that seem very bizarre, and maybe the reason is the simplest and most plausible one.

From Leng Tong's time and the terrain of Jingwei Street, it was inferred that the murderer was going to the place, or the place he might be going, so it was set that the murderer might be going to the night shift, and the target might be Sanjiang Hotel or the cement factory.

Since there are not many traces of the scene, even if we imagine a plausibility, we can't find evidence, and then we look for the murderer's motive for killing, and at this time the third case occurred, and there are traces of the girl's homework book suspected to have been altered at the scene.