On the evening of January 18, Daisen will be in the villa of Professor Daisen.

While Conan was talking, Yamazaki came in with two plastic bags containing some black stuff and Midako.

Yamazaki smiled: "I have the evidence." Here are two samples of the waste oil emitted by the car, one is a little taken from the exhaust pipe of your car when you go out. The other is that we followed the footprints, walked through the grove next to the villa, and found it in the snow on the road by the woods, where the footprints turned into wheel prints, and it was thought to be the murderer's car. Originally, we followed the wheel print for a while, but the snow was too big, and then the wheel print was no longer clear, and it also crossed with the wheel print of other cars, so we couldn't determine which way to go, but the murderer should be Miss Nakahara. ”

"Why?" asked Kaori Nakahara, "Why do you move my car as soon as you go out? Why do you think it's me?"

"First, you can find Professor Oyama accurately and directly, this is done by someone in the know, and the doctor is also about factions, you shouldn't have notified the others, so one of you did it. Second, Midaiko and I saw Mr. Hitata at about half past nine, and then at about nine forty-five we heard Mr. Tokita calling us back, but we played for another fifteen minutes before looking for him, so the murderer could not have been Mr. Tokita. Third, there are two ways to get out of here, walking or driving, when Midaiko and I went out, we found that the snow on the top of the car of Professor Oyama, Mr. Kanazawa Tomoyasu and Miss Ekaku Guobu was very natural, and only you and Mr. Tokita's two cars drove in a short period of time, but Mr. Tokita's suspicion has been ruled out, so I will take some of the waste oil from the exhaust pipe of your car when I go out. "Then I thought you were the murderer after you found that the footprints had turned into tire prints, and that the tires of the car that had been parked in that place were about the same distance as your car." ”

"Just by the spacing of the tires and the exhaust oil?" asked Kaori Nakahara, "If that's the case, then who knows if you split the waste oil on the exhaust pipe of my car into two parts?"

Seeing that Mei Daiko was standing next to Conan and made him completely unable to move, Conan gave him a straight look, and Yamazaki smiled: "Mei Daiko." ”

"Oh," said Maida stepped forward, "and we recorded the whole thing. ”

Seeing that Mei Daiko was gone, Conan breathed a sigh of relief.

"Joke," Kaori Nakahara said, "who knows if it's set up and then filmed." ”

"Our cameras have built-in time," Midaiko laughs, "and it's not good to cheat." ”

"Good, well done. Conan said in a Maori voice, "Kaori-sama Nakahara, you don't have anything to say now." ”

"It's this snow that left my mark. Kaori Nakahara said, "Originally, this was a perfect invasion plan for foreign criminals. ”

"You're wrong," Conan said in a Maori voice, "there's never a perfect crime. ”

"If it weren't for this snow, I might not have been able to detect the conversion of footprints and wheel prints on the road, but in that case, you should have come back around 9:35, and you simply can't explain being fifteen minutes late. Yamazaki laughed, "Do you want to say that the car broke down on the road? ”

"Can't I fix it?" Kaori Nakahara asked rhetorically.

"You also said that the lettuce salad is sold out, so you can imagine how many people are in these villas nearby, and if there is no wind and snow, more people will go to that convenience store to buy things. Yamazaki smiled, "More people will see you and your car, and enthusiastic people will also appear." ”

"I took it. Kaori Nakahara sighed.

"Is it really you?" asked Jiang Jiao Guobu, "Why is that?"

Tomiyasu Kanazawa asked, "Is it because Professor Oyama published the paper you wrote in his name on the therapeutic development of genetic factors for colorectal cancer?"

Kaori Nakahara asked in surprise, "How do you know?"

"I have worked under Professor Oyama for nearly 30 years, and I know very well what Professor Oyama is. Kanazawa asked rhetorically, "Has he done any research on this, and how can I not know?"

"I actually wrote the last award-winning paper published by Professor Oyama," said Ginji Tokita, "and I was transferred to his discipleship, not only because I trusted him, but also because my paper was in his eyes." ”

"What?" Jiang Jiao Guobu was taken aback, "So my current thesis?"

"Of course, I did. "For Professor Oyama, our paper can complement his shortcomings and make him more famous. For us, we can get more financial benefits from him, and his prestige is good, and it is good for us. As for the dissertation, I don't think I'll write that dissertation in my life, and there will always be a chance in the future, and if not, it's not bad to mess around under Professor Oyama. ”

"Wait for the professor to be mixed, and then squeeze the students. Kaori Nakahara said.

"It's a bit too much, maybe there are people like that," Ginji Tokita said, "but generally it's just a signature, like a guide or something." ”

And this time he may need an award-winning paper to get more research funding. "I think he said to you, 'It's up to me, the professor, to publish your paper, so that the world can see it.'" After all, there are many papers that appear every day in Japan, whether it is judges or magazines, generally speaking, priority is given to the works of famous people, and papers with the name of Professor Oyama are definitely easier to be recognized and win awards than papers with your name. ”

"For this ridiculous reason?" Kaori Nakahara said with some sadness, "My father died of colorectal cancer when I was very young, and I will become a doctor and devote myself to colorectal cancer research, just to save patients like my father." In the past six years, I have spent all my efforts to complete that thesis, which was written especially for my dead father, and it turned out that it was for the ridiculous reason of 'winning the award' that was snatched away by the teacher whom I once respected as my father. As he spoke, tears flowed.

"As far as the teachers are concerned, Professor Oyama is actually very good. "He can get a lot of resources for us." ”

"Kaori. Jiang Jiao Guobu shouted.

"I'm fine. Kaori Nakahara wiped away her tears and said.

At this time, Maori woke up, and he asked Yamazaki, "It's all settled?"

"Yes, uncle. Yamazaki smiled, "Kaori-chan Nakahara has already pleaded guilty. ”

Maori smiled, "Then I'll go have another drink." Then he said to the four of Kanazawa, "Let's come together." ”

Kanazawa Tomoyasu said together: "Okay. ”

When they left, Yuan Zi smiled and said, "I knew I was going to chase the footprints with you." ”

"You're right, too. Lan smiled, "Miss Sonoko Suzuki, a female high school student." ”

Sonoko smiled, "Of course, I'm Suzuki Sonoko." He laughed.

"What?" said Mei Daiko with a smile, "Let's hear it." ”

"Aren't you thirsty?" Yamazaki laughed, "Let's go out and drink juice while talking." ”

"Okay, let's go. Mei Daiko said.

When they left, Yamazaki said, "You should write a report first." ”

"Okay. Conan said, "I'll give it to you as soon as I can." ”……

Later, Kaori Nakahara was sentenced to six years, Mr. Tomoyasu Kanazawa became the new professor, and Mr. Tobita Ginji and Ms. Ekaku Kaburo became his protégés. ……