When Chiba and Takagi returned from the bathroom with the water in their hands, Miwako Sato and Katsumi Uehara were already standing on the blackboard and talking freely, apparently having resolved their differences.

"Doctors, hospital security guards, financial practitioners, horse breeders, construction workers, power plant managers, truck drivers, this prisoner is really a vegetarian, everything."

Hanging the photos of the deceased in the file one by one on the blackboard under the "Serial Murder" sequence, Katsumi Uehara turned his head to look at the photos of the two men in black who were posted by Miwako Sato under the "Shinkansen Bombing" sequence.

"Judging from the information we have so far, although these seven deceased people had different occupations and ages before their deaths, the only thing they have in common is that they have a good reputation among colleagues, relatives and friends, and they are good people with a good reputation......

Wataru Takagi and Kazunobu Chiba who had dried their hands couldn't help but be shocked when they saw this, and immediately stepped forward to introduce each of the deceased, and Sato, who had never intervened in this serial murder case before, sat on the side and listened-

The first deceased was a doctor from Rice Flower Central Hospital, male, 45 years old, working in the Department of Neurology;

The second deceased was a security guard at Mihua Central Hospital, male, 57 years old, working in the hospital's security department;

The third deceased was a financial practitioner, male, 31 years old, working for Suzuki Fund;

The fourth deceased was a horse breeder, male, 47 years old, working for the Red Corner Turf Club;

The fifth deceased was a construction worker, male, 28 years old, who worked for a construction company under the Takasugi Foundation;

The sixth deceased was a power plant manager, a 45-year-old male who worked for a power company under the Suzuki Foundation;

The seventh deceased was a truck driver, a 37-year-old male who worked for a trucking company owned by the Suzuki Foundation.

"In our investigation, none of the seven deceased showed any signs of abnormality the day before they died, and even talked and laughed with their families on the morning of their deaths......

From the perspective of social circles, these seven people do not know each other, and there is no overlap between relatives and friends. As for the people who have enmity with these seven people, we were still visiting and investigating one by one before Shiratori's accident, which is a lot of work......"

As the first police officers to investigate the serial murder case, Wataru Takagi and Kazunobu Chiba have been explaining the situation to Katsumi Uehara and Miwako Sato in the most concise words possible. But even so, it took them more than 40 minutes to make an introduction.

"Preliminary examinations at the Forensic Section revealed that all seven of the deceased had a fatal wound on their hearts, and their left wrists had been slit, which is why the fish tank was filled with blood."

"And this wound in the heart is very thin and narrow, and it doesn't look like a traditional knife. At the same time, traces of resistance were also found on the bodies of the seven deceased. ”

The two people who sat on the chair and listened and looked at the information had solemn expressions between their eyebrows.

"If there are traces of resistance, it means that the seven deceased had contact with the murderer before their deaths, and it was emotional contact.

"Judging from the information, the strongest of the seven deceased is the truck driver, who is 176cm tall and weighs 87kg; This is followed by a construction worker with a height of 172 and a weight of 84kg. ”

"Putting aside the others for the time being, it is not an easy time to easily subdue these two people and make them obediently wait for death."

The cap of the ballpoint pen circled back and forth on the paperwork, and Katsumi Uehara muttered the portrait of the prisoner in his mind: "A strong adult male? ”

Miwako Sato, who was on the side, turned her pen and added: "But if it's a drug, even a woman can do it, and you have to wait for the autopsy and blood results to come out before you can make a judgment."

However, according to the information, the seven deceased were all out to work on the day of their deaths, but they were later found dead in abandoned and dangerous buildings in the suburbs. That is, the prisoner has a car? Or rent a car? Takagi, Chiba, haven't you looked into this area before? ”

"We checked this, but there was one body every day for seven days, and there were too many vehicles in the suburbs, so we couldn't find the corresponding suspect vehicles.

"And the area where the body was found is a place that has long been abandoned, and it has only been included in the list of dangerous buildings in recent years to be demolished and rebuilt, so there is no monitoring nearby, and the original monitoring has long been broken."

Hearing this, Takagi Wataru hurriedly explained, and Chiba and Shin, who were dry-mouthed on the side, also took advantage of this effort to return to their workstations, picked up the water cup and poured it several times.

"Have you checked the fish tank?" Katsumi Uehara, rubbing his chin, closed the file in his hand: "The sale of this kind of large fish tank, generally speaking, the store should be very impressed. ”

"I checked it, but it was also fruitless, because the person who bought these seven fish tanks died by accident."

"Dead?"

"Yes, the name of the person who bought the fish tank is Nobu Miyazawa, a manager of the finance department of the Takasugi Foundation, who died a month ago due to a car accident and failed to rescue him, and this case seems to be in charge of Sakata next door."

“？”

At first glance, Katsumi Uehara, who felt a little familiar with the name, narrowed his eyes slightly: "Miyazawa Shin? The manager of the finance department of the Takasugi Foundation? ”

Miwako Sato, who noticed the strangeness of her partner, felt a little strange: "Do you know? ”

"When I went to the Tokyo District Prosecutor's Office before, I met this wife of Nobu Miyazawa who shouted for her husband, saying that the police had misjudged and that her husband was actually murdered."

Recalling the appearance of the woman named Yuka Miyazawa on that rainy day, Katsumi Uehara rubbed his temples, and for a while he only felt a little pain in his brain.

How did this add another case?

"No, what did a manager of his finance department do when he bought seven big fish tanks? Do you want to go home and raise fish? Rubbing Katsumi Uehara, he reacted suddenly, and raised his eyes to look at Takagi and Chiba.

"No, we asked, it was a soft decoration purchase. There are also a series of soft furnishings purchased with this fish tank, and I have also seen the list and the physical object, all of which match, and they are all the same, and Miyazawa Shin signed the appropriation. ”

“…… Anyway, since it's related, let's ask this Mrs. Miyazawa to come to the Metropolitan Police Department again—"

Miwako Sato, who closed the file in her hand, hadn't finished speaking, and her phone suddenly vibrated -

"I'm Sato."

After seeing the note, Miwako Sato, who hurriedly pressed the answer button, gradually changed her face: "Is this so?" I see, thanks. ”

Katsumi Uehara, who was a little curious when he saw this, raised his eyebrows: "What's wrong?" ”

"The results of the bomber's call log are out, and the mobile phone number belongs to Toshihiko Takasugi."

"Toshihiko Takasugi? That Son-in-law of the Takasugi Foundation? ”

"Hmm."

Miwako Sato nodded, and then put down the teacup and stood up: "Takagi, Chiba, the two of you go to make an appointment with Mrs. Miyazawa; Uehara, come with me to the Takasugi Foundation. ”