Under the guidance of Kerim, Wu Cuo found the scene of the crime.

That is, the first foothold after the tiger and others set up their own portal.

It was a dilapidated residential building in the wilderness of the suburbs, an old-fashioned tube building, which looked to be at least 25 years old, and a large piece of wall ash on the side of the building was peeling off, revealing red bricks, and the red bricks had the word "demolition" written on them, and it was not an exaggeration to say that it was a dilapidated house.

The lighting in the corridor is not good, even during the day, it is dark.

Wu Cuo led a group of assistant police officers upstairs and walked up to the corridor on the second floor.

On the right hand side of the aisle are more than a dozen rooms, some of which have doors that have fallen, and the doors of black holes are like big mouths swallowing people.

The three rooms 201, 202, and 203 on the far side are where the tiger and others stay.

The door was hidden, and Wu Cuo pushed open the door of 201 and smelled a ...... Unique to decoration - damp wall ash, putty smell.

The walls of the house were very white, and at first glance they were freshly painted, as if to cover up the fact that they had been newly painted, and several mud dots had been thrown on the white walls, one of which had reached the ceiling.

Next to the door was the switch of the light, Wu Cuo reached out and pressed it, and the light turned on.

This place still has electricity!

The old-fashioned house with 1 bedroom, 1 living room and 1 bathroom, no kitchen, and cooking has to be in the corridor.

Wu Cuo and Yan Ruyu's family used to live in such a house, when their parents were still alive.

The living room was furnished only with a round table in the middle of the room, and the top was dusty and not thick.

The newly plastered wall shows that the scene has been carefully handled, and according to experience, Wu Cuo put down the table first as soon as he came up.

He bent down to take a closer look at the bottom of the leg where it touched the ground.

There was no missing blood.

He went back to the bedroom.

A few low-quality mattresses almost covered the floor of the bedroom, and as you can imagine, adults and children slept here.

There was no futon on the mattress, and I don't know if it was because I didn't need it in the summer, or if it was disposed of.

Wu Cuo carefully checked the mattress again, but there was still nothing.

The situation in room 202 was similar, which made several assistant police officers look embarrassed.

If there is no clue at all, I am afraid that the next step is to deal with the wall.

To put it nicely, it is to deal with the wall, in fact, it is to slowly scrape off the layer of putty that has just been brushed on the wall, and it cannot destroy the evidence that may exist inside.

It's a time-consuming and labor-intensive chore, and no one wants to do it on a hot day.

Wu Cuo didn't have much expression, he had already pushed open the door of 203.

Buzz Buzz –

A few frightened flies took off and stumbled out of the house.

Wu Cuo immediately came to his senses, walked into the house quickly, and searched around.

The living room, empty.

The bedroom, too, was empty, not even a poor quality mattress. But there was a knife on the ground.

A blood-stained machete.

A few flies were still lying on the bloodstains, moving two steps from time to time.

Wu Cuo picked up the knife and extracted several clear fingerprints from the hilt.

But he was puzzled, if the scene had been carefully handled, why was the knife kept?

Criminals careless? There's no reason for that!

Minghui also looked at the knife and asked in a low voice, "What's weird about this thing?" How do I feel...... It seems like...... Someone deliberately put it here, just waiting for us to find out...... It's really, so obvious......"

"Send it to the appraisal department immediately."

"Yes!"

"The rest, scrape the wall!"

Although the assistant police officers were troublesome, seeing that Wu Cuo and Minghui were taking the lead, they rolled up their sleeves and did it, so it was not good to show anything.

The wall treatment work lasted for five days, but fortunately, autumn had already begun, and the autumn rain brought a hint of coolness.

People are scraping the wall, and from time to time they will find something.

"Boss! There's blood here! ”

"There's one here, too!"

……

While the assistant police officers were dealing with the wall, Wu Cuo was busy in front of the building.

He sprayed the aisle in front of the door with alkaline luminol reagent for the first time, and luminol reacted with heme and showed blue-green fluorescence.

The advantage of this reagent is that it is extremely sensitive, even up to 1 in 10,000, and even blood stains that have been repeatedly scrubbed and diluted can be revealed.

The disadvantage is that fluorescence can only be recognized in a dark environment, and the time for luminol to shine is limited, so you have to hurry up and take pictures.

For this reason, Wu Cuo specially asked someone to send a large number of blackout cloths.

When a large area of fluorescence appeared in the corridor, all the detectives were shocked.

You've come to the right place!

Wu Cuo searched all the way down the bloodstains, and there were splashes, throws, drips, and columnar blood stains everywhere in the corridors and corridors.

It is enough to see that this was a brutal killing, and the victim was suddenly attacked, terrified, and stumbled to the ground running to avoid knives and sticks.

At the top of the staircase, a huge pool of blood finally appeared.

Judging by the size and depth of the blue fluorescence, there was a child who once fell here.

Wu Cuo pried open a piece of broken cement on the ground and collected a little blood from the crack in the cement.

He continued to search outward, and this search was a test of physical fitness, and he had to cover himself in the blackout cloth, spray reagents on the area under the blackout cloth, observe, and take pictures for evidence.

He was like a police dog, kneeling down to complete the work.

When he found five more pools of blood, Wu Cuo's knees were already blue and purple, and his calves were a little swollen.

After doing these evidence collection work, Wu Cuo felt that his legs were not his own, as if he only had half a life left, fortunately Minghui was still for him for a while, otherwise he would really not be able to hold on.

Wu sat in the police car parked in front of the building, stretched his waist, lit a cigarette, and couldn't wait to take out the digital camera used to collect evidence and look through the photos.

Five lives, six pools of blood.

The largest of these pools of blood is in the living room of room 103 on the first floor.

The floor of the living room, which is about 10 square meters, is covered in deep shades of blue fluorescence.

"This is supposed to be the place where the bodies are mutilated." Wu Cuo analyzed in his heart: "Judging from the distribution of blood stains, the five injured were dragged from the place where they fell to room 103, which should have been done by the tiger and the master.

At least two of them were not dead at the time of being dragged over, as two dense splatters of blood were found on the walls and ceiling of Room 103 after scraping the freshly brushed putty off the walls.

The bloodstain was obviously formed by the rupture of the human artery, which shows that after dragging the people over, the tiger and the master finally chose to cut their necks and kill them. ”

Progress has been made in the case, and Tiger and Master are suspected of committing major crimes.

Now, there's only one problem left: the machete that was left in room 203.

After Mazi identified it, he was sure that the machete was the one he had brought and landed on the scene.

The results of the identification of the lines on the machete came out quickly, which was a big surprise.

It was the fingerprints of a child, the same child who had taken the lead against cooperation with the police, and at this point, he had been taken into the interrogation room.