The last step for the murderer to leave the deceased's house was to go out, and I don't think the murderer would care about the mat at the door. Of course, this is also half the odds, and now you can only gamble once......

When I thought that there might be a clue on the footpad outside the door, I immediately said to my colleague who stepped on the test, "If you leave multiple traces in an area, you can find out which is the last footprint to be stepped on?" ”

The colleague who stepped on the certificate said to me confidently: "Noproblem, now our technology can divert this item covering fingerprints and footprints." But I have to take it back to the bureau for testing. ”

After receiving a positive reply, I immediately asked my colleague who stepped on the evidence to stop collecting evidence and directly took the mat at the door back for testing. There was no trace of the scene, and I pinned all my hopes on this mat......

After waiting for more than two hours, Xiao Su came to me with the test report and said, "The trace comparison results are out." In addition to the footprints of the deceased and her boyfriend, the last footprint to come out of the door was a pair of women's sneakers in size 40. According to the analysis of the shoe size and the focus on the shoe print: the owner of this pair of shoes is about 170 meters tall and weighs about 100 pounds. ”

I nodded and said, "Did the medical examiner determine the time of death from the time of discovery of the upper half of the body?" ”

Xiao Su opened her special notepad and looked at it and said, "According to the forensic doctor at the scene when the upper body was recovered, the time of death was between eleven o'clock at night and one o'clock in the morning. ”

If the last footprint was left by the murderer, then the man surnamed Zhang should not be the murderer. I said to Xiao Su, "Let's go, accompany me to find out what the man surnamed Zhang was doing during the time of the crime." ”

Xiao Su frowned and said to me: "The boss asked over there, but there was no result, he didn't say what he was doing during that time, and he didn't have time for witnesses to testify for him." The leader meant to condemn him to death. ”

I shook my head and said to Xiao Su: "Boss, this is another attempt to bend into a trick, this man surnamed Zhang is not without suspicion, but I still feel that the last footprint that appeared from the deceased's house is more suspicious." We have to find out where this surnamed Zhang was at the time of the crime. ”

After finishing speaking, Xiao Su and I went to the interrogation room, and the captain of the interrogation room had already begun to use cold violence against the deceased's boyfriend. Pour him croton soup and drink.

I went in and said to the officer in charge of the record, "Has this kid's background been clarified?" ”

"I found out, the business executive, is still a married man."

Unexpectedly, after the police officer finished speaking, Xiao Su said 'poof' again, and couldn't help laughing. After I glared at her, Xiao Su said to me, "I want to make a joke. Xiao Su pulled me out of the interrogation room and said, "I heard that many lesbians eventually return to normal life, and gay men still insist on being with male partners, do you know why? ”

I said angrily: "I don't know, now I'm investigating the case." ”

Xiao Su smiled and said, "Okay, then let's get down to business first." I'll check the suspect's phone and see if there are any clues. After Xiao Su finished speaking, he went directly to find the mobile phone of the man surnamed Zhang, and I waited for Xiao Su to find something......

After a while, Xiao Su came back happily and handed me the mobile phone and said, "I'll go, I know what he's going to do." He is not a murderer, there is a TS group in a chat software on his mobile phone, he went to a group friend that night 'hey', and I have asked that person to come to the police station to be a time witness for him. ”

When I got the news, I immediately reported it to the captain. Now that it has been ruled out that the man surnamed Zhang is not the murderer, it is even more likely that the real murderer is the owner of the suspicious footprints. But how can this be found out?

After listening to the latest situation of the case, the captain looked at me and Xiao Su and said, "You two analyze it, how should you investigate next?" ”

Xiao Su thought for a while and said, "I think we should start from the shoe prints, restore the sole model, and determine the shoe style." Then check the shopping malls or specialty stores in our city to sell this kind of shoes and narrow down the scope of investigation. ”

Xiao Su proposed the most traditional and stupid method, now the times are different, online shopping, purchasing agents can buy things through a variety of channels, what if the shoes of the last footprint are bought from the Internet?

I immediately shook my head at the captain and said, "No, this method is less likely than finding a needle in a haystack." I think the deceased and the murderer knew each other in the first place, and the deceased did not suspect the deceased when the murderer went to the deceased's house with a chainsaw. The second is that the murderer and the deceased lived very closely, and the murderer went back to fetch the murder after the killing, and then came back to dismember the body with a chainsaw. Under the bold assumption, if it is the second possibility, then the scope of our investigation can be locked in the community where the deceased lived, because the owner will not be questioned and suspected by the security guards when he walks around his community at night. ”

After listening to my words, the captain immediately looked at me and said, "Well, you and I have thought together, so in that case, you and Xiao Su should go and investigate the community where the deceased lived." ”

Xiao Su and I went out of the captain's office and immediately went to the community where the deceased lived before his death, and when we arrived at the community, we also directly checked the community surveillance video on the day of the crime.

Xiao Su stared at the screen and said, "This, rewind." Yes, this is it. ”

I watched Xiao Su point to the place where the screen, a person was carrying two bags that were the same as holding corpses, but the strange thing was that this person was obviously dressed as a man, but he was wearing a pair of women's shoes under his feet. Xiao Su asked the security guards of the community, and all the security guards said that they had no impression of this person, and it didn't seem to be from the community. But I also checked all the surveillance footage of the community and did not find this person entering the community. Faced with this situation, Xiao Su looked at me and said, "What should I do?" ”

I also smiled bitterly and said, "I can only trouble stepping on the certificate, take the mats at the door of all the residents in the community back for testing, and find out what matches the suspicious footprints." ”

We immediately asked the property to cooperate, and said that we would help the residents clean the mats in front of the door for free. Xiao Su and I first collected all the mats of the users in the community where the deceased lived and brought them back to the police station for comparison. After a whole day and a night of non-stop comparison and trace triage, I finally found out the shoe prints that matched the shoe prints on the footpads in front of the deceased's house, and this shoe prints actually came from the footpads in front of the deceased's boyfriend's house surnamed Zhang.

After I knew the result, I looked at Xiao Su and said, "I know who the murderer is, so let's apply for an arrest warrant directly with the leader." ”

We went straight to the man's house. The man surnamed Zhang said: "Comrade policeman, please, don't tell my wife what I did that day." I'll cooperate with whatever you want to ask. ”

I shook my head when I entered the house and said, "We're not looking for you this time, we're looking for your lover." ”

After I finished speaking, Xiao Su and his colleagues who stepped on the certificate began to look for the shoes that left shoe prints. I personally put the handcuffs on the hands of the real murderer.

In the interrogation room, Xiao Su interrogated the wife of the man surnamed Zhang.

"Why did you kill the victim?"

"Actually, I knew for a long time that my husband had a special fetish. Later, I got sick and I got sick. ”

"So you're trying to get revenge?"

"Yes, I hate her. I thought the two of them could hide in a place I couldn't see, but I didn't expect that on the third day of our move-in, the non-male and female moved to the opposite building from our house, and I had to endure that she lived opposite me every day, and went to fool around when I had time with my husband. I couldn't take it anymore and finally let me find a chance to kill her......"

After the case ended, I asked Xiao Su: "Do you know how many women go to the CDC in our city every day because their husbands have infected themselves?" ”

Xiao Su shook his head and said, "I don't know, but this kind of thing is private, right?" It's all a personal hobby. ”

Indeed, what Xiao Su said makes a lot of sense. I don't discriminate against homosexual, freakish people. But according to a secret report from the city's Center for Disease Control and Prevention: women who go to the CDC for examination every day because they are infected by their husbands have an average of one per day. I just want to say that if some men who have already started a family, please think more about your partner and be more responsible......