The Old Blue Castle Investigation Case

| Chronology | | |
| --- | --- | --- |
| ‹  [The Disappearing Weapon Search Case](/wiki/The_Disappearing_Weapon_Search_Case "The Disappearing Weapon Search Case") | [**List of Episodes**](/wiki/Anime#Episodes "Anime") | [The Final Screening Murder Case](/wiki/The_Final_Screening_Murder_Case "The Final Screening Murder Case")  › |
|  |  |
| --- | --- |
| **Episode 136-137   (Int. Episode 146-147)** | |
|  | |
| **Information** | |
| Title: | The Old Blue Castle Investigation Case |
| Japanese title: | 青の古城探索事件   (Ao no Kojō Tansaku Jiken) |
| Original airdate: | February 22, 1999 (Part 1)   March 1, 1999 (Part 2)   February 13, 2010 (Part 1) **(Remastered version)**   February 20, 2010 (Part 2) **(Remastered version)** |
| Broadcast rating: | 22.8%   23.4% |
| Remastered rating: | 8.9%   8.5% |
| Manga case: | #58 |
| Season: | (/wiki/Season_4 "Season 4") |
| Manga source: | [Volume 20: File 10 (200)](/wiki/Volume_20#Blue_Castle_Case "Volume 20") ~   [Volume 21: File 3 (203)](/wiki/Volume_21#Blue_Castle_Case "Volume 21") |
| **Case** | |
| Cast: | [Conan Edogawa](/wiki/Conan_Edogawa "Conan Edogawa")   [Ai Haibara](/wiki/Ai_Haibara "Ai Haibara")   [Detective Boys](/wiki/Detective_Boys "Detective Boys")   [Hiroshi Agasa](/wiki/Hiroshi_Agasa "Hiroshi Agasa")   [Juzo Megure](/wiki/Juzo_Megure "Juzo Megure") |
| Case solved by: | [Ai Haibara](/wiki/Ai_Haibara "Ai Haibara")   [Conan Edogawa](/wiki/Conan_Edogawa "Conan Edogawa")   [Hiroshi Agasa](/wiki/Hiroshi_Agasa "Hiroshi Agasa") |
| Next Conan's Hint: | Chess pieces (Part 1)   Passport size (Part 2)   Clock (Part 1) **(Remastered version)**   Passport (Part 2) **(Remastered version)** |
| **Staff** | |
| Director: | [Yasuichiro Yamamoto](/wiki/Yasuichiro_Yamamoto "Yasuichiro Yamamoto")   [Kenji Kodama](/wiki/Kenji_Kodama "Kenji Kodama") (chief) |
| Organizer: | [Hirohito Ochi](/wiki/Koujin_Ochi "Koujin Ochi") |
| Storyboard: | [Hirohito Ochi](/wiki/Koujin_Ochi "Koujin Ochi") |
| Episode director: | 136: [Yoshio Suzuki](/wiki/Yoshio_Suzuki "Yoshio Suzuki")   137: [Hirohito Ochi](/wiki/Koujin_Ochi "Koujin Ochi") |
| Animation director: | 136: [Miwa Oshima](/wiki/Miwa_Oshima "Miwa Oshima")   137: [Atsushi Aono](/wiki/Atsushi_Aono "Atsushi Aono") |
| Character design: | [Masatomo Sudo](/wiki/Masatomo_Sudo "Masatomo Sudo")   [Yasuhiro Moriki](/wiki/Yasuhiro_Moriki "Yasuhiro Moriki") (design works) |
| | Voice Cast: | | --- | | [Minami Takayama](/wiki/Minami_Takayama "Minami Takayama") as [Conan Edogawa](/wiki/Conan_Edogawa "Conan Edogawa")   [Kenichi Ogata](/wiki/Kenichi_Ogata "Kenichi Ogata") as [Hiroshi Agasa](/wiki/Hiroshi_Agasa "Hiroshi Agasa")   [Chafurin](/wiki/Chafurin "Chafurin") as [Juzo Megure](/wiki/Juzo_Megure "Juzo Megure")   [Megumi Hayashibara](/wiki/Megumi_Hayashibara "Megumi Hayashibara") as [Ai Haibara](/wiki/Ai_Haibara "Ai Haibara")   [Yukiko Iwai](/wiki/Yukiko_Iwai "Yukiko Iwai") as [Ayumi Yoshida](/wiki/Ayumi_Yoshida "Ayumi Yoshida")   [Ikue Otani](/wiki/Ikue_Otani "Ikue Otani") as [Mitsuhiko Tsuburaya](/wiki/Mitsuhiko_Tsuburaya "Mitsuhiko Tsuburaya")   [Wataru Takagi](/wiki/Wataru_Takagi_(voice_actor) "Wataru Takagi (voice actor)") as [Genta Kojima](/wiki/Genta_Kojima "Genta Kojima"), Next Conan's Hint   [Hisako Kyouda](/wiki/index.php?title=Hisako_Kyouda&action=edit&redlink=1 "Hisako Kyouda (page does not exist)") as Masuyo Mamiya   [Yoshisada Sakaguchi](/wiki/index.php?title=Yoshisada_Sakaguchi&action=edit&redlink=1 "Yoshisada Sakaguchi (page does not exist)") as Mitsuru Mamiya   [Jin Yamanoi](/wiki/index.php?title=Jin_Yamanoi&action=edit&redlink=1 "Jin Yamanoi (page does not exist)") as Takahito Mamiya   [Naoki Tatsuta](/wiki/Naoki_Tatsuta "Naoki Tatsuta") as Katsuo Tabata   [Isshin Chiba](/wiki/Isshin_Chiba "Isshin Chiba") as Servant (Episode 136)   [Nao Takamori](/wiki/index.php?title=Nao_Takamori&action=edit&redlink=1 "Nao Takamori (page does not exist)") as Housekeeper (Episode 136) | | |
| **Music** | |
| Opening song: | [TRUTH ~A Great Detective of Love~](/wiki/TRUTH_~A_Great_Detective_of_Love~ "TRUTH ~A Great Detective of Love~") |
| Closing song: | [Still for your love](/wiki/Still_for_your_love "Still for your love") |
***The Old Blue Castle Investigation Case*** (青の古城探索事件 ,*Ao no Kojō Tansaku Jiken*[?](/wiki/Help:Japanese "Help:Japanese")) is the 136th and 137th episode of *[Detective Conan](/wiki/Detective_Conan "Detective Conan")* [anime](/wiki/Anime "Anime").
## Contents
* [1 Cast](#Cast)
* [2 Gadgets](#Gadgets)
+ [2.1 Gadgets introduced](#Gadgets_introduced)
* [3 Case](#Case)
+ [3.1 Situation](#Situation)
- [3.1.1 Part 1](#Part_1)
- [3.1.2 Part 2](#Part_2)
+ [3.2 People](#People)
+ [3.3 Resolution](#Resolution)
* [4 Remastered version](#Remastered_version)
* [5 BGM listing](#BGM_listing)
+ [5.1 Part 1](#Part_1_2)
+ [5.2 Part 2](#Part_2_2)
* [6 Gallery](#Gallery)
* [7 In other languages](#In_other_languages)
* [8 See also](#See_also)