Personally, I loved to read this book because I like reading detective and mystery stories. It talks about how a detective - Conan - that looks like a primary student on the outside but is actually a senior secondary student on the inside secretly investigates a murder case and reveals the identity of a spy. However, if people finds out he isn't a primary student but is actually a detective, all the people around him and himself will be in danger. I enjoy reading this book as it is exciting to read how Conan hides from everyone and secretly assist the polices and detectives to find out the truth. I highly recommend this book.