Spoiler:
When Conan found out that the banker was responsible for the death of his wife even though he was at the police station at the time of the murder, how did he immediately understand that he acted alone and that some device was used to make the knife kill the victim without being directly used by a person? When somebody organizes a murder and doesn’t want to be there at the moment, he usually hires someone else to do the dirty work. If the man was responsible for the murder, but was not there at the moment, the most logical solution would be that he hired a contract killer to do the job. But Conan didn’t even consider this possibility and understood immediately that the banker did it himself, even though nothing suggested that initially. Why is that? What do you think?
