The Old Blue Castle Investigation Case

Chronology
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Episode 136-137 (Int. Episode {{{int-episode}}})
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:	22,80% 23,40%
Remastered rating:	8.9% 8.5%
Manga case:	#58
Season:	6
Manga source:	Volume 20: File 10 (200) ~ Volume 21: File 3 (203)
Case
Cast:	Conan Edogawa Ai Haibara Detective Boys Professor Agasa
Case solved by:	Ai Haibara Conan Edogawa Professor 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 Kenji Kodama
Organizer:	Hirohito Ochi
Storyboard:	Hirohito Ochi
Episode director:	136 Yoshio Suzuki 137 Hirohito Ochi
Animation director:	136 Miwa Oshima 137 Atsushi Aono
Voice Cast: Minami Takayama as Conan Edogawa Kenichi Ogata as Professor Agasa Chafurin as Inspector Megure Megumi Hayashibara as Ai Haibara Yukiko Iwai as Ayumi Yoshida Ikue Otani as Mitsuhiko Tsuburaya Wataru Takagi as Genta Kojima, Next Conan's Hint Hisako Kyouda as Masuyo Mamiya Yoshisada Sakaguchi as Mitsuru Mamiya Jin Yamanoi as Takahito Mamiya Naoki Tatsuta as Katsuo Tabata Isshin Chiba as Servant Nao Takamori as Housekeeper
Music
Opening song:	TRUTH ~A Great Detective of Love~
Closing song:	Still for your love

Gadgets introduced

Wristwatch Flashlight
	Agasa added the flashlight function to Conan's watch

Cast

Characters
Conan Edogawa Ai Haibara Ayumi Yoshida Mitsuhiko Tsuburaya Genta Kojima Professor Agasa

Gadgets

Gadgets
Power-Enhancing Kick Shoes Criminal Tracking Glasses Wristwatch Flashlight

Case

Situation

Part 1

The Detective Boys are on a camping trip but Professor Agasa forgot the tent. They then wander to a castle owned by an old mistress and learn that there's a secret treasure in the castle. Mitsuru Mamiya is actually the second husband of the eldest Mamiya daughter.

Attempted Murder
	Location: Secret passage Victim: Conan Edogawa Suspects: Katsuo Tabata, Mitsuru Mamiya, Takahito Mamiya, and Masuyo Mamiya Conan finds a clue to the treasure and enters a secret passage but is attacked by an unknown assailant.

The Detective Boys, Haibara, and Agasa begin searching for Conan but have no luck. Pausing their search, the group eats dinner and discusses the chess pieces in the garden and the mystery treasure in the castle. During dinner, Mitsuru tells the group about the burnt tower and about a supposed curse that has resulted in the tower being locked.

Burned Tower - Accident ? (Past)

Location: Tower Victims: Eldest daughter of Mamiya Family, her friends, and one of Masuyo's maids. Cause of death: Burned to death Suspects: Mitsuru Mamiya, Takahito Mamiya, and Masuyo Mamiya Five years ago, Ms. Mamiya the eldest daughter of Mamiya Family returned from oversea to celebrate her mother, Masuyo, birthday. However that night, she and several friends and one of Masuyo's maid were burned to death by a fire.

Mysterious Death - Accident ? (Past)

Location: Forest Victim: Mitsuru Mamiya's assistant Cause of death: Starvation Suspects: Katsuo Tabata, Mitsuru Mamiya, Takahito Mamiya, and Masuyo Mamiya Mitsuru Mamiya's assistant explored the burnt tower two years ago, but never returned. Ten days later, the assistant was found starved to death in the nearby forest. The police ruled the assistant's death as accidental from becoming lost in the forest. After this discovery, maids working at the castle spread the rumor that the assistant died of a curse by the mistress and the others who perished in the fire.

After dinner, Agasa and Haibara realize that something must have happened to Conan to prevent him from contacting anyone. Agasa is about to phone the police to investigate but upon seeing Conan's hat in the hallway, he is lured to an opening in the wall.

Attempted Murder
	Location: Secret passage Victim: Professor Agasa Suspects: Katsuo Tabata, Mitsuru Mamiya, Takahito Mamiya, and Masuyo Mamiya Peeking in the opening to a secret passage while looking for Conan, Agasa is attacked by the same culprit who attacked Conan.

Part 2

When nighttime comes, Haibara investigates freely and is accompanied by the Detective Boys. They enter the same secret passage as Conan did and wander out of another secret entrance. Genta remains trapped in the passage and captured by the culprit.

Kidnapping
	Location: Secret passage Victim: Genta Kojima Suspects: Katsuo Tabata, Mitsuru Mamiya, Takahito Mamiya, and Masuyo Mamiya Genta is kidnapped while in the secret passage.

Mitsuhiko investigates the doorway to the castle's tower and disappears. Haibara and Ayumi investigate the abandoned tower of the castle and find the culprit using a secret entrance connected to the castle.

Attempted Murder
	Location: Toilet in the burned tower Victims: Ayumi Yoshida and Ai Haibara Suspects: Katsuo Tabata, Mitsuru Mamiya, Takahito Mamiya, and Masuyo Mamiya Ayumi was followed by someone upon her entering the tower! Luckily Ai saved her by hiding themselves inside a secret tunnel.

People

Katsuo Tabata
	41 years old Mamiya family gardener

Mitsuru Mamiya
	49 years old Second husband of Ms. Mamiya (Married into the family) Takahito's stepfather

Takahito Mamiya
	25 years old Ms. Mamiya and Mr. Mamiya's son Mitsuru's stepson

Masuyo Mamiya
	83 years old Head of the Mamiya family Ms. Mamiya's mother

Resolution

  Show spoilers »

Haibara and Ayumi find an old woman's corpse inside the secret tunnel in the tower and realize who the culprit is pretending to be, the grand mistress. The culprit is Masuyo Mamiya and she then chased them throughout the corridor. When Haibara and Ayumi were coming out from under a floor tile in the castle main hall, the culprit grabs on and tries to kill them. Then Conan, Mitsuhiko, Agasa and Genta appear, thanks to that Mitsuhiko used Conan's glasses that the culprit purposely dropped to find where the three are confined. Conan reveals that he know the current grand mistress is an imposter because she knew the change in passport despite supposedly not having left the Mamiya mansion in years. She underwent plastic surgery look like Masuyo and had to travel abroad to keep said changes. She was one of the maids, Mutsumi Nishikawa, who had supposedly disappeared in the fire.... which she caused within the tunnels.

After re-uniting with everyone, Conan reveals the location of the treasure. The treasure was the castle in itself, and a beautiful scene. Mutsumi breaks down realizing that she wasted 10 years and killed a huge number of people just for this, and she's soon captured.

Remastered version

A remastered version of both episodes aired on February 13th and 20th, 2010.

BGM listing

Part 1

#	Song Title	Romaji	Translation	OST
1	TRUTH ~A Great Detective of Love~	TRUTH ~A Great Detective of Love~	TRUTH ~A Great Detective of Love~	TRUTH ~A Great Detective of Love~
2	蘭のテーマ （摩天楼ヴァージョン）	Ran no Tēma (Mantenrō Vājon)	Ran's Theme (Skyscraper Version)	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
3	昼下がりの天使たち （摩天楼ヴァージョン）	Hirusagari no Tenshitachi (Mantenrō Vājon)	Early Afternoon Angels (Skyscraper Version)	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
4	コナンの勝利 （夜空ver.）	Konan no Shōri (Yozora ver.)	Conan's Victory (Night Sky ver.)	Detective Conan Original Soundtrack 2
5	蘭・愛のテーマ （ギターver.）	Ran・Ai no Tēma (Gitā ver.)	Ran's Love Theme (Guitar ver.)	Detective Conan Original Soundtrack 2
6	悪のテーマ （パート２）	Aku no Tēma (Pāto 2)	Theme of Evil (Part 2)	Detective Conan Original Soundtrack 2
7	脅迫 （パート１）	Kyōhaku (Pāto 1)	Threat (Part 1)	Detective Conan Original Soundtrack 2
8	想い出 （摩天楼ヴァージョン）	Omoide (Mantenrō Vājon)	Memories (Skyscraper Version)	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
9	新一の名推理	Shin'ichi no Meisuiri	Shinichi's Great Deduction	Detective Conan Original Soundtrack 3
10	忍び寄る影	Shinobiyoru Kage	Creeping Shadow	Detective Conan Original Soundtrack 3
11	事件現場 （オリジナルver.）	Jiken Genba (Orijinaru ver.)	Scene of the Case (Original ver.)	Detective Conan Original Soundtrack 2
12	カード賭博のボス	Kādo Tobaku no Bosu	The Card Gambler's Boss	Detective Conan "The Fourteenth Target" Original Soundtrack
13	Still for your love	Still for your love	Still for your love	Still for your love

Part 2

#	Song Title	Romaji	Translation	OST
1	TRUTH ~A Great Detective of Love~	TRUTH ~A Great Detective of Love~	TRUTH ~A Great Detective of Love~	TRUTH ~A Great Detective of Love~
2	謎解き （その２）	Nazotoki (Sono 2)	Riddle Solution (Part 2)	Detective Conan Original Soundtrack 3
3	忍び寄る危機	Shinobiyoru Kiki	Incoming Crisis	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
4	悪のテーマ （パート２）	Aku no Tēma (Pāto 2)	Theme of Evil (Part 2)	Detective Conan Original Soundtrack 2
5	推理 （オリジナルver.）	Suiri (Orijinaru ver.)	Deduction (Original ver.)	Detective Conan Original Soundtrack 2
6	カード賭博のボス	Kādo Tobaku no Bosu	The Card Gambler's Boss	Detective Conan "The Fourteenth Target" Original Soundtrack
7	犯人の謎	Hannin no Nazo	The Mystery of the Culprit	Detective Conan "The Fourteenth Target" Original Soundtrack
8	怪人包帯男２	Kaijin Hōtai Otoko 2	The Mysterious Bandaged Man 2	Detective Conan Original Soundtrack 3
9	ターゲット サスペンスＨ	Tāgetto Sasupensu H	Target Suspense H	Detective Conan "The Fourteenth Target" Original Soundtrack
10	一触即発	Isshokusokuhatsu	Critical Situation	Detective Conan "The Fourteenth Target" Original Soundtrack
11	「名探偵コナン」メイン・テーマ （予告）	"Meitantei Konan" Mein・Tēma (Yokoku)	"Detective Conan" Main Theme (Preview)	Detective Conan Original Soundtrack 2
12	殺意	Satsui	Murderous Intent	Detective Conan "The Fourteenth Target" Original Soundtrack
13	ターゲット サスペンスＩ	Tāgetto Sasupensu I	Target Suspense I	Detective Conan "The Fourteenth Target" Original Soundtrack
14	コナンの勝利 （夜空ver.）	Konan no Shōri (Yozora ver.)	Conan's Victory (Night Sky ver.)	Detective Conan Original Soundtrack 2
15	Still for your love	Still for your love	Still for your love	Still for your love
16	蘭のテーマ	Ran no Tēma	Ran's Theme	Detective Conan Original Soundtrack 1

See also

• Season 6