"So, it's only possible that Professor Hirota would have had an accident after he locked the door himself?" Dr. Asasa continued, following Officer Yokomizo's words.

"No, it's possible that he was killed! It's just that the scene was deliberately disguised as an accident!" Once the case happened, Conan didn't care about the purpose of his coming to Professor Hirota, but focused on reasoning.

"I remember you're the kid from Mr. Mori's family!" Actually, Officer Yokozo saw Conan more often than Xingchen, but Mori's status in his mind was far less than that of Twilight, so it wasn't until just now that Officer Yokomizo remembered where he had seen Conan.

"That's right, Conan is the child of my relative's family. Dr. Asa added, "Conan and Xingchen were classmates, and a friend of mine had a USB stick with Professor Hirota, and I happened to bring them over to get the USB stick. ”

Conan pointed to the landline phone on the ground and said, "Look, why is this phone buckled on the ground with a book pressed on it, but the receiver of the phone is still intact on it?

"If that's the case, it's a locked room murder!" Officer Henggou felt a little uneasy in his heart.

If someone dies, if it's just an accident, then just ask your officers to write a report for the record. But if it is a murder, then it is necessary to lock down and arrest the murderer, and the difficulty of handling the case is not only a little bit greater than that of an accident.

When Officer Yokogou was still thinking in his heart, Mrs. Hirota had already cried to him, "Who killed my husband?"

Don't look at Mrs. Hirota is now middle-aged and has a good body, but she was a big beauty when she was young.

The age difference between Mr. and Mrs. Hirota is 8 years, and a large part of Mrs. Hirota's marriage to Professor Hirota was because she liked his economic conditions, but now that her husband is dead, the family income is bound to drop sharply, and her future life cannot be as lavish as before.

It can be said that Mrs. Hirota is the most eager of all the people present to bring the murderer to justice.

"Madam, please calm down, has anyone come to visit the professor tonight?" Officer Henggou asked routinely, he had not yet decided whether to forcibly define this incident as an accident, or try his best to collect clues to arrest the murderer, and he could only take one step at a time.

"Counting that person, it looks like three or four people have been here tonight. Mrs. Hirota pointed to Dr. Asasa as if to say that Dr. Asa was also one of the suspects in the murder of her husband.

"Dr. Asa has always been with us. By the time he arrived, Professor Hirota was dead. Xingchen proved for Dr. Asasa.

"This matter has nothing to do with me, how can a murderer bring a child to kill someone?" Dr. Asa said calmly, he believed that not to mention that he was innocent, even if he really killed someone, with the abilities of Xingchen and Conan, as long as the two of them worked together, they could get themselves away with the crime.

"Alright, you three children and your grandfather will go to the next room and wait, and we will make a note of Mrs. Hirota first. "Judging from the experience of Yokogou's case, although it is unlikely that Mrs. Hirota killed her husband, she should be investigated first.

"Am I like my grandfather? I'm only 52 years old!" Dr. Agasa, like most older people in Japan, is reluctant to admit that he is old.

In the subsequent investigation, Officer Yokomizo confirmed that Mrs. Hirota went to the town with the neighbors' wives to attend the town meeting between 8 and 11 o'clock tonight, and she did not have the time to commit the crime.

Mrs. Hirota actively provided clues to the police, saying that when she and her neighbors went out, they happened to see a student named Hosoya come to meet Professor Hirota.

"Strange! Is this phone glowing?" Conan lay on the ground, looked at the landline phone and reminded Officer Henggou, "This should be a phone message! If you listen to it, you might know something!"

If Maori was at the scene, he would definitely have given Conan an an old punch in the head, accusing Conan of interfering with solving the case.

Officer Yokozo didn't despise Conan because of his young age, and as long as it made sense, he would still humbly accept anyone's advice.

Wearing special white gloves, Officer Henggou carefully turned the phone over and put it on the table, and checked that the telephone answering machine showed that there were a total of thirteen telephone messages in it.

"Hey...... I'm Shirakura...... Professor Hirota...... We've made an appointment for tonight......."

"I'm Morioka, what time should I come over tonight......"

……

Ten of the thirteen telephone messages were left by Shirakura, and two were left by Morioka.

Mrs. Hirota said that she knew the students of the two husbands, and that the contact information of the three of them should be found in the address book at home, plus the Hosoya she saw when she went out.

In addition, there is a phone message in the answering machine from the insurance company.

"Hello, I'm an insurance company, I would like to explain to you about our new insurance, can you please take some time?"

Although the voice changed slightly through the telephone transmission, Conan and Gray Yuan could still hear that the person who spoke was the vodka of the Black Cloth Organization.

Dr. Asa whispered to Conan, "So this case is ......"

"No! there's a low chance they'll do it. Conan explained: "If they had come to get a USB stick, they wouldn't have left their voice in the answering machine, and if they did, their first task would not be to set up a secret room, but to retrieve the call tape." ”

The messages on the answering machine may have been used to dispel Professor Hirota's wariness when meeting with them, and it was a means to accomplish the goal. Although Gray Yuan is not a member of the Black Coats' action team, she also knows the organization's procedures, "They should be anxious now, because the tape can't be retrieved." ”

Xingchen was not as optimistic as Gray Yuan, and he asked cautiously: "Although this place has been sealed off by the police, will the organization not stop doing it and directly arrange heavy firepower to kill everyone here?"

Gray Yuan thought for a moment and said seriously: "It shouldn't be yet! Vodka doesn't know that it's been exposed yet, and the organization doesn't know that I'm here." ”

The implication is that once the organization learns that the traitor Shiho Miyano is here, they will kill everyone here at all costs.

Xingchen felt a chill behind him, and in a certain theatrical version, the black-clad organization had the behavior of shooting gunships over the capital Tokyo. So it's not impossible that Professor Hirota's house was bombed by missiles!