1 / 3Detective Conan · Season 1 · Episode 136
The Old Blue Castle Investigation Case (1)
Monday, February 22 · 25 min · ★ 7.5 on TMDB
The Detective Boys are on a camping trip but Dr. Agasa forgot the tent. They wander to a castle owned by Masuyo Mamiya, meet Katsuo Tabata, Mitsuru Mamiya, Takahito Mamiya, and learn that there's a secret treasure somewhere inside.