Han Bo believed that finding out how the murderer came in was likely to be the key to solving the case, so he carefully observed the traces and reconstructed the murder scene according to what the police at the substation learned and markings, as well as ceramic fragments all over the ground. Pen "Fun" Pavilion www.biquge.info

"At the time of the crime, the next-door neighbor heard the movement here, but it was not particularly intense and the time was short, indicating that the murderer and the victim did not have a particularly fierce quarrel, and the whole crime process did not take long. ”

Han Bo paced back and forth a few steps, squatted down and pointed in the direction of the door frame: "Combined with the scene, it can be inferred that the murderer first grabbed the plate on the dining table and threw it at Lu Fang who came out of the bedroom. Maybe he was too nervous to hit it accurately, or maybe Lu Fang reacted quickly and dodged it in time, and the plate smashed on the partition between the living room and the bedroom, falling to the ground and shattering. ”

Li Yaoxin nodded, walked to the door frame of the partition and said: "The murderer missed the blow, rushed up and grabbed Lu Fang's neck with his left hand, put Lu Fang on the door frame, and pulled out a murder weapon such as a fruit knife or dagger with his right hand, and stabbed Lu Fang in the chest and abdomen. ”

"Lu Fang scratched with both hands, but did not scratch the murderer's flesh and skin, and even failed to pull off a strip of cloth or a button" A technical policeman tacitly played the role of the victim, and asked Li Yaoxin to choke his neck and gesture with both hands.

The opportunity to rebuild the scene with the leader is not available to everyone, and another policeman ran into the bedroom and ran out again.

Li Yaoxin was worried that he had no goal, and immediately raised his right leg: "The child heard the movement and came out, the murderer couldn't spare his hand, and kicked the child into the corner, probably worried that Lu Fang was not dead, and stabbed the child a few more times before going over to stab the child." ”

After confirming that the two men were dead, he began to rummage through the cabinets, take all the belongings, remembered that the victim had a gold necklace, and ran over to break it, which was the cause of this strangulation, and then fled in a hurry. ”

"The door was easily shut, but it was in a hurry. ”

Han Bo walked to the door, pointed to the dim corridor and said, "When I ran away, I didn't pay attention to my feet, and I hit the briquettes piled up by my neighbor in the corridor, and they rolled all over the ground, and some of them were broken, so his left leg and the lower left corner of his jacket should be stained with black ash stains of honeycomb coal." ”

It's like solving a case!

Li Yaoxin became more and more excited, and blurted out: "Wealth killing, it should be wealth killing!" The murderer probably only planned to burglary at first, but when he came in, he found that there were people in the house, and he didn't care about the threat or didn't think about the threat at all, so he directly killed the killer and killed people. ”

"But didn't he step on it beforehand, and didn't test if there was anyone in the house?"

"Most of the burglaries are repeat offenders, and judging from the modus operandi, they should also be repeat offenders, and it is impossible for him to make such a low-level mistake. ”

"The water room is over there, and the kitchen is common over there, so maybe the victim was not in the house when he tried it. ”

"If that were the case, he would have come in directly, and the two victims should have come in from the outside and bumped into them, not from the bedroom to see the killer. ”

"It may also be that the murderer was more cautious than we thought, he made sure that there was no one in the house, he knew that there was no one in the hallway, but it was not clear if there was anyone outside the doorway, and when he went out to observe, the two victims happened to have returned from the water room, the kitchen or the toilet. ”

"There is this possibility, the water room, the kitchen and the toilet are all outside, and the victim goes in very often. ”

The more Han Bo thought about it, the more reasonable it became, and his attention was focused on the door lock again, and he said in an unquestionable tone: "The door lock is intact, it does not mean that an acquaintance committed the crime, and it is not difficult for a habitual burglary to open such a lock." But no matter what technique is used or what tool is used, as long as it is not the original key, it is impossible not to leave clues, remove it, remove the lock and take it back for a good inspection. ”

"Yes!"

"Zhou Bureau, I'm Han Bo, the investigation results show that it should be a single crime, this should be a financial killing, the murderer is very likely to be a habitual offender engaged in burglary, the handprints were not collected, only a not very clear footprint was extracted, from the special analysis of the footprints, the murderer is about 1.68 to 1.7 meters tall, weighs 115 to 120 pounds, and is of medium stature, but these deduced characteristics can only be used as a reference. ”

Although the young deputy director of criminal investigation is not very easy to serve, no one can deny his professional level.

Zhou Yan didn't dare to be a child's play, so he hurriedly picked up a pen and paper and recorded it.

Without waiting for him to speak, Han Bo continued: "Now it can be confirmed that the murderer's left leg and the lower left corner of his shirt are very likely to be stained with black soot, which can be used as an important basis for finding out the row." In addition, please check all the burglaries that have occurred in the sub-district in the past six months, especially those with the door locks intact on the surface, to see if they can be combined. ”

"I'll immediately arrange for the police to investigate, Han Bureau, what other instructions do you have?"

"In order to ensure that nothing goes wrong, Liu Tao's whereabouts still have to be investigated, and it is best to take protective measures against Tian Lijuan, the daughter of the victim Lu Fang, to prevent the case from being done by Liu Tao, and disguising it as the scene of the murder just to buy time for killing the next target. ”

"Yes!"

"That's all for the time being, I'll go back to the bureau first, and go to the task force at 10 o'clock in the evening to listen to the report. ”

"I'll send someone to see you off. ”

"No need, don't waste precious police resources on this, I'll drive here, drive back by myself. ”

……

If it is in Nangang, the murder of two people is generally solved by the criminal police detachment of the municipal bureau.

However, Dongping is not Nangang, and the city bureau only has an "organized" criminal investigation detachment and no criminal police detachment. Ma Xuefu, the deputy head of the detachment, pounced on the anti-crime case, and the political commissar of the detachment came over and guided the investigation in the special case group of the sub-bureau.

In the end, whether the guidance can be put aside, at least in terms of case-handling resources, can be guaranteed.

As the deputy director in charge of criminal investigation, Han Bo couldn't do everything himself, let alone leave the impression that he didn't trust his subordinates, so he hurriedly returned to the city bureau after a few words.

I was going to close the door and make a call to Secretary Lin to report the problems of Pingsheng Group, but I didn't expect that as soon as I returned to the bureau and walked into the office, Du Zhigang, the captain of the Criminal Investigation Corps of the Provincial Department, actually called.

In fact, it is normal for the leader of the higher-level business department to call to inquire about the case, after all, there was indeed a murder case in Dongping that killed two people, and the criminal investigation detachment had reported it as soon as possible according to the regulations, but just thinking about the cunning Hao Yingliang, he didn't think about it before.

"I just came back from the scene, the task force has been established, and Comrade Zhou Yan of the Pingxi Branch personally serves as the leader of the task force......

"Xiao Han, it stands to reason that with you, a criminal investigation expert, this case does not need to be worried about by the general team, but now the chief team is responsible for the system, and Dongping is the area I am responsible for, I not only have to ask but also go there, in fact, I am on my way to you. ”

The captain personally went out, and it seems that the provincial department has set a new target for this year's detection rate of current homicides.

The superior came to guide the investigation, Han Bo naturally couldn't object, and hurriedly said: "Team Du, it's great that you can come, Jiang is still old and spicy, and I have more confidence in my heart to guide me." ”

"More bottomly, are you worried that I'm going to cause trouble for you?"

Du Zhigang made a joke and said lightly: "I arrived at about half past six in the afternoon, and the basic situation should be almost touched for half a day, just to participate in the case analysis meeting." ”

"Okay, I'll wait for you, I'll accompany you to participate. ”

This incident reminded Han Bo that the current murder cases are more important than the murders of the past few years, and as a deputy director in charge of criminal investigation, he should know what the priorities are.

It is important to solve the murder case that has just occurred, and the affairs of Pingsheng Group must be put aside. Moreover, taking into account the possible impact of all aspects, Pingsheng Group's affairs cannot be rushed.

But the investigation work has just been rolled out, what can we do now, do we go to visit and inquire like the front-line police, and touch the ex-convicts and suspicious persons in the jurisdiction of the Pingxi Branch?

This was obviously inappropriate, Han Bo weighed it and simply rushed to the technical brigade to study the bags of physical evidence collected from the murder scene.

"Korean Bureau ......"

"You're busy, you're busy, leave me alone. ”

Han Bo waved his hand and walked behind a technical policeman to see him sort out the biological samples collected at the scene, all of which had to be put in a refrigerated cabinet, and when the vehicle was arranged and the relevant procedures were completed, the two police officers would send them to the Criminal Technology Center of the Provincial Department for DNA testing and identification.

was wondering if Secretary Meng could get some funds from the city to build a DNA laboratory, when an exclamation suddenly came from the office next door: "What is this, how can this be!"

"What?" did you find, Han Bo walked over and asked.

A young trace engineer handed over a magnifying glass, pointed to the keyhole on the table, and said, "Han Ju, look, the keyhole seems to be chewing gum." ”

I took the magnifying glass and looked at it, carefully picked out a point with the signature, and looked at it carefully, it was indeed very similar to chewing gum.

The deputy captain of the technical brigade and several policemen who came over were puzzled, but Han Bo was overjoyed and couldn't help laughing: "Chewing gum in success, chewing gum in defeat, with this small chewing gum, the murderer can hide today and can't hide tomorrow, sooner or later he will be caught!"

"Han Bureau, this is left by the murderer?"

"I know how the lock is opened, and he chews the gum softly, using tools to shove the softened gum into the keyhole. The pins of these old-fashioned cylinders are generally short, and after being 'squeezed' open by the gum, the killer inserts the cylinder with a special tool to open the deadly lock. ”

Looking at everyone's incredulous looks, Han Bo explained: "There has never been such a case in Dongping, and it has happened in other places. The plainclothes detachment of my old unit once cracked a case of burglary using this method, and it was a string of them as soon as they were cracked. ”

"How to break?" asked an old policeman subconsciously.

"Chewing gum has been chewed, and saliva is left on it, and it is much easier to extract DNA from saliva than from other samples. With DNA typing, we can make targeted comparisons, the murderer is likely to be a repeat offender, and may even have been dealt with, this range is not large, it should not be difficult to compare!"