Case Closed, Volume 1 (by Gosho Aoyama)

Can Detective Conan crack the case.while trapped in a kid's body?When ace high school detective Jimmy Kudo is fed a mysterious substance by a pair of nefarious men in black-poof! He is physically transformed 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.Ghastly beheadings, bloody murders, and coldhearted child abductions--Precocious high school student Jimmy Kudo uses his keen powers of observation and astute intuition to solve mysteries that have left law enforcement officials baffled. Hot on the trail of a suspect, Jimmy is accosted from behind and fed a strange chemical which physically transforms him into a grade schooler! Taking on the pseudonym Conan Edogawa, he attempts to track down the people who did this to him. But until he finds a cure for his bizarre condition, Jimmy continues to help the police solve their toughest cases.Can you crack the case before Conan does?