Case Closed: Season 1, Episode 1123

1 - 1123: The Body on the Gunma-Nagano Border (1)

Detective Kogoro, Ran, and Conan are in Gunma after solving a missing persons case when Detective Mori calls Detective Yamamura. Detective Yamamura asks Detective Mori for help with a murder that took place directly on the border between Gunma and Nagano.