According to Long's inquiry, Episode 5 1 Synopsis: When Conan and his friends went to the library to give a reading report, the police suddenly came here to ask about the missing employee Tian Yu. The curator Jinchuan said he didn't know, but the police simply searched and left. However, the juvenile detective team didn't investigate further until the evening. During this period, the curator once sneaked in once. After the curator left, everyone saw the drug trafficking activities of the curator in this library.