Lokar's law of material exchange proves that as long as there is a crime scene, there must be a material exchange between the perpetrator and the crime scene.

Judging from the results of the interrogation of the murderer Xie Xinzhi, in addition to him, there must have been someone who entered the scene of the crime and left behind the 36-yard sneaker dust footprints and cotton fingerprints left by labor protection gloves.

The technical team came to the scene of the crime again to conduct a second inquest, and the facts showed that the first inquest must have ignored some key clues.

The technical team returned to the scene of the crime this time to conduct a new on-site investigation.

All kinds of inspection equipment went into battle together to conduct a carpet inspection.

Ling Zizhen took Lu Ke and the others directly into the bedroom and came to the bedside.

Under the survey light of the wide side light source, the drag marks on the side of the bed appeared in front of everyone's eyes again.

The trail was wide and large, and combined with the size of the bed and the presence of luggage, it was initially thought that someone must have rummaged under the bed for something.

However, no items of the size of the drag marks were found at the scene of the crime, and it is likely that they have been removed by the burglars.

Now it seems that the person who moved the item must have been the one who left the footprints, and that item must have been very important.

"What could it be such a big thing?" Ling Zizhen looked at the drag marks under the sidelight and said suspiciously.

"I look like a box or something, and if there's something important in it, there's no need to move the box with me." Mo Yufei was also very puzzled by this drag mark.

Ling Zizhen raised his head and added, "The technical team rummaged through the nearby garbage heap, and they didn't find anything the same size as this drag mark. ”

Lu Ke squatted down, took a closer look at the side light, and reached out to touch the ground gently.

The house is a tiled floor, inhabited and cleaned, and there is not much dust, if it is not for the use of survey lights, there are no dust drag marks here.

Lu Ke leaned down, almost pressed his face against the cold ground, and looked under the bed.

There is a large gap under the bed, and there are some miscellaneous items at each end, and there is nothing out of the ordinary.

The drag mark was right in front of the bed, and it looked like something had been removed from under the bed.

Lu Ke lay on the ground and looked under the bed for a long time, the more he looked, the more he felt that something was not right, and his brows became more and more furrowed.

He pondered for a moment, slowly stood up, and said seriously, "Lift the bed." ”

"What? Flip the bed?! ”

Everyone exclaimed in unison.

Lifting the bed sounds simple, but due to the weight and volume of the bed, it is not so easy to lift it.

The police officers of the technical team went into battle together, and on the basis of not destroying the scene, they successfully lifted the bed and stood by the window.

Ling Zizhen took the wide side light source and carefully investigated the traces under the bed, and finally found important clues.

There are mostly dead corners under the bed, and cleaning on weekdays will often be ignored, and there is relatively more dust, and the traces are more obvious.

The sidelight swept by, and there were large drag marks under the bed, which were not only larger, but also more obvious. The direction of the drag marks is the same as that outside the bed, and there are one back and forth two drag marks.

Combined with the fact that there are no large items under the bed, it means that someone first stuffed some items under the bed and then moved the items.

"This trace is so big, it is estimated that it will be more than one and a half meters, what could it be?" Su Simeng muttered in some surprise.

Mo Yufei observed for a while, was suddenly stunned, and said suddenly: "Could it be a person?!" ”

Ling Zizhen also nodded, and said seriously: "I was also about to say this, judging from all the clues, it is very likely that there was a person lying here." ”

Lu Ke slowly raised his head, took a deep breath, and said quietly: "It seems that I guessed correctly, someone must have hidden under the bed." ”

Once the idea was identified, the case became more complicated.

"When did this person come in? And when did you leave? Was he the one who covered his mouth and nose and caused He Yetong to suffocate to death? ”

Lu Ke squinted his eyes, twisted his fingers, and muttered these questions in his mouth.

It is not terrible that something goes wrong, and for the investigation of criminal cases, as long as all the impossibilities are eliminated, what remains must be the truth.

"We might as well determine the identity of this person first, is he a thief? Or a friend of the deceased? ”

Mo Yufei settled down and spoke first.

Everyone cast their eyes at Mo Yufei together, waiting for her to continue.

"The deceased was a female boss worth more than 10 million, such a female boss did not live in her own mansion, but bought a house here to live alone, what is the purpose?

He Yetong is currently divorced and single, and the house here is only known to those close to her, will this be a place for private meetings?

If the footprints were left by this person, then he should be a man with a height of about one meter six.

Could this person be the object of He Yetong's private meeting?

Let's not talk about whether a divorced woman will have a tryst with the opposite sex in her own home, will a person like He Yetong find such a man?

If the two are really a couple in private, why would they hide under the bed?

Then this person is most likely someone who does not know He Yetong, so it can be determined that when this person entered the scene of the crime, He Yetong was most likely not at home. ”

After listening to Mo Yufei's words, Su Simeng asked, "So this man hiding under the bed is very likely to be a burglar?" ”

Mo Yufei nodded and replied, "So, the situation at that time should be like this." This thief took advantage of the fact that there was no one at home, burglarized, and was in the process of stealing, He Yetong suddenly came back. Then, in a panic, he hid under the bed. ”

Su Simeng said slowly: "When He Yetong went home, there was a person hiding under his bed, which was really scary. ”

Ling Zizhen took over the words, spoke at the right time, and said, "This is also in line with the results of the inquest at the scene. The thief left footprints and rummaged through the house wearing protective gloves, leaving traces of cotton thread and rummaging through the house. ”

After everyone finished speaking, Mo Yufei pursed her lips and continued: "Then Xie Xinzhi pretended to be a staff member of the broadband network company that came to the door for maintenance, and called the door. Only because the theft was discovered, he committed a crime of passion and killed He Yetong. This is why he did not find the money in his home, because it had been stolen by the thief under the bed. ”

Lu Ke smiled faintly and nodded in affirmation: "So, this thief is a witness to Xie Xinzhi's murder." He must have known the whole story. Regardless of whether Xie Xinzhi's confession is true or not, this thief will definitely tell us the most correct answer. ”