Case Closed: Season 1, Episode 336
1 - 336: Secret of the Touto Film Making Centre (2)
Conan calls Agasa over to reveal Akira as the murderer and to reveal Furumura's missing third shirt button had an important role in the murder.
Conan calls Agasa over to reveal Akira as the murderer and to reveal Furumura's missing third shirt button had an important role in the murder.