Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

"Haizhou International Apartment is about 3 kilometers away from the Bailan River Bridge where Zhou Yang's body was found."

"This apartment is also one of the three buildings that we judged in the morning that a high fall may have occurred."

"Combining that Zhou Yang lives here, we can basically judge that the place where the deceased fell is this building."

Ren Qiang introduced the current situation.

First of all, the identity of the deceased has been determined, which is very good news for solving the case.

Second, the residence of the deceased can basically be determined as the place where he fell into the river.

Now, it is necessary to go through the relationship network of the deceased to determine whether the deceased committed suicide or homicide.

"What have you found here?"

Liu Guodong shook his head: "Lu Chuan is conducting the final inspection on the clothes worn by the corpse, and it has not been completed yet. We will go to Haizhou International Apartment later."

"Okay, everyone, work hard, and strive to finalize the nature of the deceased's death today."

Current survey laboratory.

"Xiao Lu, how are you doing?"

After Liu Guodong finished the meeting, he called Sun Jun, who had already conducted a detailed inspection of Zhou Yang's residence.

No special circumstances were found, and the neighbors around were also tenants, most of whom did not know each other.

But because Zhou Yang rented a single apartment, the sound insulation was not very good, and the surrounding residents did not find any strange sounds.

Judging from Sun Jun's investigation results, Zhou Yang is more likely to commit suicide by jumping off the building.

"Master, I have discovered something."

Zhou Yang's clothes had been checked, and Lu Chuan found nothing wrong.

However, Lu Chuan checked his shoes carefully again, and compared the abnormal wear marks on the heels of the two shoes with his own shoes.

The conclusions reached are somewhat unexpected.

"Oh? What discovery?"

Lu Chuan picked up the shoes from the corpse and put them under the spotlight.

"Here, about one-third of the patterns on the soles of the dead man's shoes show signs of wear and tear. This shows that the shoes are old. If they can be worn to this extent, they should be worn by the dead man often."

"And here." Lu Chuan put the shoes flat, focusing on the position of the heel: "There are wear marks on the outside of the heel, which are roughly similar to the front soles."

"This shows that the deceased walked with a slightly foreign character. I also contacted the forensic doctor. From the shape of the deceased's legs, this judgment was basically confirmed."

"But here, on the inside of the heel, both shoes have irregular signs of fresher wear."

"and many more!"

Liu Guodong turned around and put on his gloves, took the leather shoes that Lu Chuan said, and observed carefully.

Sure enough, on the inner side of the heel, there are signs of wear, and compared with the outer side, the imprint is obviously darker in color, and there are uneven rough edges.

This all shows that traces should be left in a short period of time.

"what do you mean?"

"The normal walking marks of the deceased determine that there can be no friction marks on the inside of the heel."

"I just did an experiment with my own shoes, Master, look."

Liu Guodong put down his shoes and followed Lu Chuan to the side.

"Drag marks, I can leave such marks by dragging on the ground with my shoes."

The floor of the current survey laboratory is made of cement, without floor tiles. Liu Guodong can clearly see a series of scorched black drag marks extending.

The end point is a pair of leather shoes.

Liu Guodong picked up the shoes and saw traces very similar to the inside of the heels of the deceased's leather shoes.

"He killed?!"

Lu Chuan nodded solemnly.

"Before the other party fell into the river, there was a high probability that he was dragged along, and his shoes rubbed against the ground, leaving marks."

"The possibility of killing him is extremely high!"

This discovery is quite important and can be said to be a turning point in determining the nature of the case.

"Come on, Lu, follow me to Team Qin's office, by the way, take your shoes."

Qin Yong's office.

"I tested it underground, and I can basically confirm that it is the trace left by dragging."

Looking at the shoes in the evidence bag, Qin Yong carefully observed the traces on the inside of the stiletto heels.

"If this mark is a drag mark, it can basically prove that Zhou Yang committed suicide, not suicide."

It is impossible for a corpse to drag itself.

"Going to the scene, there are drag marks on the shoes, and there must be drag marks on the ground at the scene!"

"Qin team, this kind of dragging marks should be left on the ground with a high friction coefficient. Zhou Yang's room cannot be a concrete floor, and the floor or floor tiles are unlikely to leave such dragging marks."

Lu Chuan added: "I think the murderer may have dragged Zhou Yang forward on the rooftop of the apartment."

"Don't let Team Leader Sun's people go up, the other party's footprints may be collected on the roof, don't destroy them."

Qin Yong nodded: "Okay, I'll arrange it."

Four 10 minutes later.

Lu Chuan first entered the single apartment where Zhou Yang lived for investigation.

As imagined, Zhou Yang's apartment was very messy.

The coffee table is full of leftover instant noodle boxes, takeaway packaging, Coke bottles and a bottle of cigarette butts.

The home looked like it hadn't been cleaned in a long time.

Lu Chuan paid attention to the ground.

The apartment is covered with floor coverings, it can't be seen how long it hasn't been scrubbed, a layer of dirt.

But it is also this layer of dirt that allows Lu Chuan to clearly judge whether there are scratches.

As expected, the dirt is intact and there are no scratches.

There was no trace of pedaling on the window sill, which was basically consistent with Sun Jun's inspection results, ruling out the possibility that this was the crime scene.

"Go upstairs."

After Qin Yong finished making the phone call, Sun Jun and his group blocked off the rooftop of the apartment, and no one went up there.

Lu Chuan put on shoe covers, gloves, and transparent pedals, but did not directly enter the rooftop.

The roof of Haizhou International Apartment is open. From the elevator equipment room on the top floor, there is an aluminum alloy door. Open the door and you will see the roof.

This door is the only way to enter the rooftop.

Therefore, Lu Chuan first collected fingerprints on the aluminum alloy door.

If the murderer had been a little careless and not wearing gloves, he might have left fingerprints on the doorknob.

After finishing these, Lu Chuan opened the door and entered the rooftop.

The roof is very wide, it looks like two to three hundred square meters.

On the left is the ventilation equipment area, and on the right is the open space.

Lu Chuan carefully moved the transparent pedals, observing whether there were traces of dragging on the concrete floor on the roof.

"How about it?"

On the walkie-talkie, Liu Guodong asked anxiously.

"I haven't found it yet, Master, there is a portable frequency conversion spectrometer in our car, please help me get it."

"okay."

The entire roof and ground can be seen at a glance, but Lu Chuan has scanned twice just now and found no trace of dragging.

This unscientific.

Zhou Yang called the leather shoes on his feet with black soles. Based on Lu Chuan's experiments on the ground of the current survey laboratory, if they were dragged, the black traces of rubber friction should be obvious.

However, there is nothing on the rooftop. (end of this chapter)