The Sign of the Four (1) Recently I'm reading the novel "Sherlock Homes" written by Arthur Conan Doyle. The middle name of the writer reminds me of a Japanese cartoon figure: Conan. Conan was actually a high school student and also a talent detective. But he accidentally caught out a group of criminals doing something illegal. unfortunately the criminals found him listening to their conversation. They knocked him out and gave him a tablet, which could have killed him but it turned out that his body shrank to the size of a pupil. When he was asked what his name was by his girlfriend, he just picked up the middle name of the writer of "Sherlock Homes". The reason why he couldn't tell her the truth is that he needs to protect her from the criminal gang.