Because the clue that Naoki Kamii found was in a convenience store, their search was able to proceed smoothly until midnight.
Otherwise, you will just waste nearly half of the precious night time.
When Tang Ze and his team arrived at Kotono Noborikawa's residence, the room was still filled with criminals searching.
Judging from his appearance, he even wants to dig deep into the ground to find clues.
When Tang Ze entered the apartment, his first feeling was that it was small, and then he felt that it was simple.
Although the room was generally clean, it lacked the atmosphere of life.
A bed, a computer and a small table for eating.
It seemed that Kotono Norikawa lived in this house just to live, and there was no other triviality in life.
Even the refrigerator was shabby and shabby.
Instant jam, ketchup and bread slices as well as ready-made canned foods.
There were several bottles of drinks below, one of which was light red water. It didn't look like it was for drinking, but rather like water that was used for other purposes.
Other than that, there are no other ingredients for cooking.
"Ah...it's really lifeless..."
Looking at the food in the refrigerator, Naoki Kamii sighed, "It feels like they have an easier life than a grown man like me.
The only goldfish that showed any signs of life have all died."
"goldfish?"
Tang Ze looked at the fish tank, the only decoration in the room. In the light red water, the corpses of several goldfish were floating on it.
That color looks a bit depressing, and the only breath of life not only does not appear, but becomes even more gray.
"Tang Zejun, have you found anything here?"
Just as Tang Ze was looking at the fish tank in deep thought, Inspector Megure came over with a frown on his face and said, "We have conducted a carpet search of the room, but we did not find any information.
It turned out that Kotono Norikawa had premeditated the crime and left no clues in the room.
Everything on the computer was completely deleted. We have now applied to the operator to investigate her Internet browsing history, but have not found anything else."
"No...it's a big harvest!"
Tang Ze pointed to the fish tank beside him and then took out the bottle of reddish water from the refrigerator. "I suspect that's not a normal water source. The reddish color of the water is probably caused by some microorganism."
"Ah!" Naoki Kamii immediately realized the preciousness of this bottle of water. "Could it be that...she brought this water back from near the place of imprisonment?!"
"I guess it's likely."
Tang Ze looked at Inspector Megure and said, "We need to go back and analyze the water right now. I'll leave the internet history of Kotono Norikawa to you.
If you have any news, please feel free to contact me.”
"Then I'll leave it to you!" Inspector Megure's expression also brightened: "If we can narrow the location to a certain range, then the human wave tactics will be able to exert its power!"
Although no decisive clues have been found, the scope has been narrowed a lot compared to the original blind search.
But their task remains daunting.
Even if the possibility of the city being eliminated and the search area being greatly reduced, the area surrounding Beika Town is still vast.
Moreover, compared with the convenience in the city, the suburban environment and roads are a hassle.
Moreover, abandoned and desolate locations in the suburbs are very hidden, and the so-called carpet search is actually not safe.
What's more, the outskirts of Beika Town are very large. If they search the entire outskirts outlined in the park on the map, they will not be able to complete the search in less than a day.
And the only way to cut the useless search range by half is to rely on this bottle of water!
In the process of reasoning and solving a case, material things are actually easily overlooked but can often serve as decisive clues.
Just like Sherlock Holmes can identify the various sources of soil, what Tang Ze has to do now is to identify the unique microorganisms in the lake water to determine the source of the water!
After returning to the scientific research institute, Tang Ze handed the water source to other members of the scientific research institute for water quality analysis. This small job is not difficult and only takes time.
He then approached Saito Hiroshi and asked, "How's the analysis I asked you to do?"
"The substance left in the deceased's fingernails is the seeds of the cockscomb, which mostly grows in the northern part of Beihua Town."
Saito Hiroshi glared at his feet and slid from the left computer to the right: "Also, there is no special substance on the criminal's bicycle tire."
"So, now we can narrow it down to the waterside cottage in the northern part of Beika Town?"
Tang Ze nodded to indicate that he understood and walked towards a group that was testing water sources: “It’s not enough, it’s just that the northern part is not enough.
Speed up and analyze the microorganisms in this water source as quickly as possible to find the substance that can lock the area!"
"There are results!"
At this moment, a young researcher shouted, "It's Peridinodium! This is definitely a microorganism that can lock onto a region!"
"Oh? That's a great discovery."
Saito Hiroshi, who was standing nearby, quickly stood up and walked over. After taking a look at the microorganisms under the display microscope, he smiled and said, "Detective Karasawa, I've found the last piece of the puzzle you were looking for!"
"Explain it." Tang Ze spoke immediately without any greetings.
"Peridinium is a type of phytoplankton, but unlike other harmless phytoplankton, Peridinium produces toxins that kill fish."
Saito Hiroshi said: "You found dead goldfish in the suspect's home, right? They were poisoned by Peridinium."
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