Jimmy Kudo, the son of a world-renowned mystery writer, is a high school detective who has cracked the most baffling of cases. One day while on a date with his childhood friend Rachel Moore, Jimmy observes a pair of men in black involved in some shady business. The men capture Jimmy and give him a poisonous substance to rub out their witness. But instead of killing him, it turns him into a little kid! Jimmy takes on the pseudonym Conan Edogawa and continues to solve all the difficult cases that come his way. All the while, he's looking for the men in black and the mysterious organization they're with in order to find a cure for his miniature malady.

A man is found in a dumpster with his throat slit...and his hair perfect. Was he murdered at his favorite salon? If so, how was his body smuggled out? Only his hairdresser knows for sure until Rachel's parents team up to solve the case!

Then, Harley Hartwell and Richard Moore find themselves chasing the same murderer, a killer who leaves a centipede at the scene of each crime. Just as the two rival sleuths are ready to square off against each other, a third detective joins the hunt...