When Shinichi Kudo, Maori Ran, and Maori Kogoro were passing mr. Sakaguchi's house after returning from dinner outside, they heard a scream coming from Mr. Sakaguchi's house.
Who knew that when he entered Mr. Sakaguchi's house, he actually saw Xiao Gang die on the stairs, and the cause of death was bitten by a dog named John.
When the murder occurred, it was natural that the police officer who came out of the police at a second speed was indispensable.
Because Xiao Gang's death was related to John, Officer Mu Twilight took it back to the police station.
However, Kudo Shinichi does not believe that John will attack people for no reason, because in Kudo Shinichi's view, John is a very well-behaved dog.
But Xiao Gang was indeed bitten to death by John, what is the reason for this?
In order to find out the truth, Kudo Shinichi personally went to Mr. Sakaguchi's house to find out.
Finally found an important clue, that is, the time of the murder was exactly when the clock was ringing.
Yes, Kudo Shinichi believes that Mr. Sakaguchi is the murderer.
However, while doing the experiment, John did not react to Mr. Sakaguchi's order.
Because it cannot be proved that Mr. Sakaguchi is the murderer, then John deliberately bites people, and the end is to be executed.
Just when there is no clue in the case, When Kudo Shinichi accidentally sees the diving competition, he suddenly discovers the reason for John's bite.
So he again suggested that Officer Megumi do an experiment, and sure enough, Mr. Sakaguchi finally confessed.
It turned out that Mr. Sakaguchi's son Masato died because of Xiao Gang, and at the beginning, Mr. Sakaguchi thought that Xiao Gang would get better because of education, but what Mr. Sakaguchi did not expect was that eight years later, Xiao Gang was still as bad as before.
Therefore, Mr. Sakaguchi trained John to teach Xiao Gang a lesson.
The case was settled, and Mr. Sakaguchi was duly punished.