Although it was already past nine o'clock in the evening, after deliberation, everyone decided to go to Shizuoka Prefecture overnight, because the CD containing the drug research materials was so important. Without information, Xiao Ai's research would not be able to move forward.

"Lin Jun, I wish you a smooth journey." Orochimaru didn't go, he chose to stay in the villa.

Lin Si and Xiao Ai Mingmei got into the car, because the Chevrolet Trailblazer RS that had just come back was parked relatively close, so Lin Si did not choose to drive a Mercedes-Benz. The car started and drove out of the villa, and went away under the eyes of Orochimaru.

While driving the car, Lin Si was still wondering in his heart whether Professor Hirota would die.

First of all, according to the original plot, the professor was already dead when Xiao Ai arrived at Professor Hirota's house; Secondly, just now, Lin Si also knew that the murderer was about to kill Professor Hirota through the heart curse mark on the murderer's body.

So why didn't Hayashi remind Professor Hirota?

It's not that he doesn't want to remind, it's that it's inconvenient to remind. If Lin Si said this, and others asked him how he knew, how should he answer? Foreseeing the future? This kind of thing can be said to Orochimaru, but it is absolutely impossible to say to others.

Maybe his reminder will not only not help others, but will also cause trouble for himself. The murderer hasn't acted yet, how do you know that the murderer is going to kill? Are you the murderer?

So taking into account various factors, Lin Si chose to remain silent. Professor Hirota can only ask for more blessings for himself......

……

After a three-hour drive, Hayashi and his entourage arrived in Shizuoka Prefecture. Akemi had been to Professor Hirota's house, so they didn't need to ask for directions, and came directly to the professor's house under Akemi's guidance, and it was 0:35 at this time.

"Ah, who are you?" A plump old woman was taking out the key to open the door and enter the house, when she saw the car parked in front of her house, and several people getting out of the car and walking towards her house, so she asked the few people.

It was Akemi who answered her, "We are here to find Professor Hirota, and we have already contacted him by phone. ”

The old woman hurriedly opened the door and invited everyone into the house, and identified herself, and it turned out that she was Professor Hirota's wife.

"Why are you out there so late?" Lin Si asked casually.

Mrs. Hirota smiled, "There is a women's party in the town today, and I went to it with the wives in the neighborhood. ”

In other words, there is only Professor Hirota in the Hirota family tonight, which is really convenient for the murderer to commit the crime......

"The light in the study is still on, he should be in the study." Mrs. Hirota led Lin Si and the others towards the study, and she called the professor several times, but no one answered. So she tried to open the door directly, but found that it was locked. "Strange, the door is locked, he should be inside, but why don't you answer?"

Seeing this, Lin Hei already understood, and it seemed that Professor Hirota still couldn't escape the fate of being killed.

Xiao Ai observed the door, looked up and found that there was a transparent glass above the door, and immediately said: "You should be able to see the situation inside through the glass on the door." ”

Lin Si thought the same thing, so he jumped up, grabbed the frame of the glass and climbed up. He looked through the glass and saw chaos in the study, an old man lying on his back on the ground, and the overturned bookshelf pressing against him.

"Oh no, something happened!" Lin Si let go of his hand and landed on the ground, and said to Mrs. Hirota: "The professor fell to the ground and was still pressed by the bookshelf. ”

"What?!" Mrs. Hirota was taken aback, "That! So what should I do? ”

"I can only break in!"

Naturally, Mrs. Hirota would not object to this kind of emergency, so Lin Si and Akemi slammed the door together. In fact, Lin Si could easily kick the door open with one kick, but he decided to try to be as ordinary as possible.

After two bangs, the door was slammed open, and both Xiao Ai and Akemi saw the scene in the study, and their pupils shrank suddenly. Professor Hirota was motionless, but his eyes were open, which was obviously not a good sign......

When Mrs. Hirota saw the professor's tragic situation, she couldn't help but howl and pounced, shouting, "Husband! ”

Although Lin Si is not a detective, he is also a person who has watched hundreds of episodes of Conan, and knows that the murder scene cannot be destroyed, so he said to stop it: "Slow! ”

He reached out and stopped Mrs. Hirota, and then crouched down to inspect himself. He pressed his finger on Professor Hirota's neck and probed the carotid artery, but unfortunately, Professor Hirota had no pulse.

"The professor's pulse is gone...... Lin Si said back to the crowd.

When Mrs. Hirota heard this, she suddenly felt that the world was spinning, and she almost fainted, but fortunately, Akemi helped her.

"How so? How so? Mrs. Hirota muttered in grief, "Was it an accident?" Or did someone kill my husband? ”

"We'll have to wait for the police to come and investigate." Lin Si took out his mobile phone and called the police - here with a normal mobile phone number.

When Lin Si called the police, Xiao Ai looked at the door and frowned slightly.

The door of the study was locked just now, and it took Lin Si and his sister a lot of effort to break it open. This kind of door can be locked from the inside and outside, but the outside lock must have a key, so Xiao Ai asked Mrs. Hirota, "Who has the key to the study?" ”

Mrs. Hirota wiped her tears and replied, "There is only one key, which is kept by my husband." ”

Hearing this, Akemi also realized something, and said to herself: "If it wasn't an accident, someone killed the professor and locked the study with a key outside." So, who is the key and who is the murderer? ”

Xiao Ai also thought so, but Lin Si knew that things were not so simple, and the key was probably not on the murderer, but in this room. Lin Si's gaze swept to a book that fell to the ground, and the key should be under this book.

He didn't pick up the book to inspect it, though, because he wasn't wearing gloves. He secretly made up his mind that wherever he went in the future, he would always carry a pair of gloves with him in case he needed them.

He didn't touch anything, just looked at everything in the study with his eyes. In his memory, the killer killed the professor and locked the door outside, and then used the landline's audio tape to drag the key back to the room through the crack in the door, thus setting up the murder scene as a secret room.

But when Lin Si observed the study, he was surprised to find that there was no landline here. The only place where the landline was supposed to be a desk was a writing desk, and there were only books and stationery on the desk, and nothing else.

Don't have a phone that can put tapes? So how did the murderer complete the secret room?

It's interesting, I don't play cards according to the routine......

"Don't you have a phone in the study?" Lin Si asked Mrs. Hirota.

Mrs. Hirota sobbed and replied, "No, my husband doesn't want to be disturbed when he reads, so not only does he not give me the key to the study, but he is not even allowed to put the phone in the study." Unless he was alone at home, he would run outside to answer the phone. ”

It would be strange, how did the murderer lock the door and return the key to the room?

Lin Si looked at the suspicious book on the ground, and the key was pressed under the book in the original book. Could it be that there is no key under the book now? The murderer took the key away directly after locking the door?