The Old Blue Castle Investigation Case (1)
Run Time: 25 mins
Air Date: Mon, 22 Feb 1999
Average Rating: ⭐ 7.5 (2 votes)
YTVSeason 1 - Episode 136
Average Rating: ⭐ 7.5 (2)
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.