When ace high school detective Jimmy Kudo is fed a mysterious substance by a pair of nefarious men in black--poof! He is physically tranformed into a first grader. Until Jimmy can find a cure for his miniature malady, he takes on the pseudonym Conan Edogawa and continues to solve all the cases that come his way.The husband of a diplomat is found dead in his study and Conan's on the case. But what exactly happened? The diplomat was definitely murdered but the door and windows to his private chamber were all locked from the inside. How in the world did the killer escape? And, as if that wasn't bad enough, Conan and his pals get swept up in a missing person caper at the local library. Murder, kidnapping and drug smuggling aren't exactly the sorts of things condoned by librarians. What's the connection? Conan thinks he knows the answer but he's got more pressing things to worry about - like escaping the deadly grasp of the fiendish miscreant!Can you solve the mysteries before Conan does?