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. In this exciting volume: It's Conan versus the Phantom Thief! Who is this mysterious masked man? And why does he know Conan's true identity? Later, an investigation of an extramarital affair leads to bloody murder! Also, Conan's elementary school friends decide to become super sleuths when they form the Junior Detective League! But will they get into more trouble than they can handle? Can you figure out whodunit before Conan does?