Three months ago, Sagawa Hikoyama also died of atropine poisoning, and the way he died was the same as Manabe Iyama today.
It was just that the other party was discovered too late and had been sleeping in the hotel room he had booked, and only then was the other party's body discovered.
If that were all, it would just be a coincidence, and this similarity wouldn't even be considered indirect evidence.
But with the results of the poison test coming out, everything changed.
Manabe Iyama did die from atropine poison, but the key was not this, but the nutritional supplements he carried with him.
According to the test results, the three drugs are vitamins C, B and E.
Three months ago, Sagawa Hikoyama also had an identical medicine box with exactly the same medicine contents.
In this way, the situation of the case becomes very obvious.
The criminal, Haruko Kitagami, probably killed these middle-aged people in the same way.
And the method is not difficult to guess.
Since the two are lovers, they naturally won't be on guard. Then one party will prepare nutritional supplements for the other party on the grounds of nourishing the body, and the other party will just happily accept it.
After all, vitamins are not any other medicines, so the other party will definitely not have any doubts. In addition, as a medical graduate student, he will probably happily accept the nutritional supplements prepared for him by the girlfriend.
But little did they know that this box of nutrient supplement contained a deadly poison.
Because there is a vitamin in capsule form in the medicine box, it is not difficult to guess which vitamin contains the poison.
But even if we knew that Haruko Kitagami had poisoned the vitamin C capsules, it would be of no use and there would be almost no clues.
Because the only poisonous capsule had been eaten by the deceased, and the rest were vitamins, there was no evidence at all.
When everyone realized the other party's tactic, they felt it was very difficult.
Just as Tang Ze said when he met Kitagami Haruko before, it would be difficult to convict someone of poisoning just because he had an alibi at the moment of killing, not to mention the other party's "Buddhist" way of killing.
Generally speaking, criminals always choose a time to kill someone, but this suspect seems to not care when the other person dies, it all depends on luck.
Isn't it just based on luck? The deceased is asked to eat one capsule among dozens of capsules, and whether he is poisoned or not depends entirely on fate.
I wonder how those men would feel if they knew they were playing Russian roulette every day.
Unfortunately, Tang Ze and others were destined not to be able to ask.
Because the two sides usually have no intersection, and by the time they have an intersection, they will probably have turned into a corpse.
Naturally, it was impossible for them to find out from each other where the poison came from.
What's even more outrageous is that according to Naoki Kamii's investigation over the past two days, Haruko Kitagami was in love with these men and even had relationships with them.
On the one hand, he is in love with her, but on the other hand, he prepares poison for her and waits for her death.
What a twisted mentality it must be to date those men happily while putting them to death.
Just thinking about it makes me feel cold to the core.
Poor these three middle-aged men, they thought a beautiful woman was throwing herself into their arms, but they didn't expect that what they were throwing into their arms was a "beautiful snake" that kills without blinking an eye.
As for why there were three people, it was naturally because Tang Ze and others suspected that the professor was the original victim and was killed by the other party using the same method.
Tang Ze told everyone all the information, including the information from Hiroaki Hotaru.
"I didn't expect that there would be such twists and turns behind a case."
Miwako Sato's face darkened upon hearing this. "Since that fellow Hiroaki Hota dared to use his information to cause trouble for Detective Karasawa, it means that even in the eyes of Hiroaki Hota, a psychology professor, he's a tough guy."
"What should we do now? Should we merge the cases?"
Naoki Kamii, who was standing by, asked, "From what we've seen so far, Kitagami Haruko is a serial killer who specializes in preying on middle-aged men!"
"No, let's investigate separately for now."
Tang Ze shook his head and said, "Based on the current clues, we have no evidence to join the case. Everything is just our speculation.
In this case, it is better to investigate separately, so that there will be no bias. We only need to pay attention to the relevant clues."
"I think so too." Sato Miwako nodded and said, "Everything is still uncertain right now, so let's continue investigating.
I will also investigate whether the deceased has any connection with Kitagami Haruko. We were confused at first, but now that our target is clear, I think the rest is just a matter of time."
"Then what should we do here, senior?" asked Naoki Kamii.
"Go meet Kitagawa Haruko." Tang Ze said with a smile.
"Eh? But weren't you afraid of alerting the enemy before?" After hearing what Tang Ze said, Kamii Naoki asked with some confusion.
"But now, we have a legitimate reason." Tang Ze smiled and said, "After a lover passed away, it's reasonable to ask questions, right?"
"That's right." Naoki Kamii scratched his head, and seeing Tang Ze walking out, he quickly said goodbye to Takagi and the others and followed him.
The two first went to school, but learned from each other's classmates that the other had already returned home after class. They had no choice but to call the Metropolitan Police Department to ask someone to inquire about the other's residential address, and then drove to the other's home again.
"This villa looks really grand. She is indeed a woman from a wealthy family."
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