The WORST seasons of Detective Conan

Every season of Detective Conan ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of Detective Conan!

The cases of a detective whose physical age was chemically reversed to that of a prepubescent boy and he must hide his true mental development.

Last Updated: 7/24/2025Network: YTV (JP)Status: Continuing
Season 1
star
8.72
64 votes

#1 - Season 1

First Aired 1/8/1996

Kudo Shinichi is a seventeen year-old high school detective whom people call the "Modern Sherlock Holmes." However, one night after a date with his childhood sweetheart, Ran, Shinichi witnessed an illegal trade and, caught off his guard, was knocked unconscious and fed a drug that was supposed to kill him... but he woke up and found himself shrunken to a seven year-old. In order to track down the men who did this to him, Shinichi hid his identity and lived with Ran, whose father happened to be a hopeless detective, and with that came a series of murders and mysteries that he must solve.