← Detective ConanFan page — not affiliatedS1·E136 The Old Blue Castle Investigation Case (1)22 February 1999 · 25mDetective Conan😂0🤯0❤️0🔥0👏0☆☆☆☆☆Not rated yetCommentsoldest firstSign in to join the discussion.Where to watchWhere to watch Detective ConanNWatch on Netflix→iMore info on IMDb↗