The ninth season of the Case Closed anime was directed by Yasuichiro Yamamoto and produced by TMS Entertainment and Yomiuri Telecasting Corporation. The series is based on Gosho Aoyama's Case Closed manga series. In Japan, the series is titled Detective Conan (名探偵コナン, Meitantei Conan) but was changed due to legal issues with the title Detective Conan. The episodes' plot follows Conan Edogawa's daily adventures.

The episodes use five pieces of theme music: two opening themes and three closing themes. The first opening theme is "Koi wa Thrill, Shock, Suspense" (恋はスリル,ショック,サスペンス, Koi wa Suriru, Shokku, Sasupensu; lit. "Love is Thrill, Shock, and Suspense") by Rina Aiuchi until episode 230. The second opening theme is "Destiny" by Miki Matsuhashi for the rest of the season. The first ending theme is "Start in My Life" by Mai Kuraki until episode 232. The second ending theme is "Always" also by Mai Kuraki until episode 247. The third ending theme is "Aoi Aoi Kono Hoshi ni" (青い青いこの地球に, lit. "The Blue Blue Star") by Azumi Uehara and is used for the rest of the season.

The season initially ran from January 15, 2001, through October 22, 2001, on Nippon Television Network System in Japan. Episodes 220 to 254 were later collected into nine DVD compilations by Shogakukan. They were released between December 25, 2002, and August 25, 2003, in Japan.

Episodes 230 and 231 were dubbed by Studio Nano as part of a curated episode list, which was released on Crunchyroll and Netflix on July 3, 2025.