The Old Blue Castle Investigation Case

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)
Season:	6
Manga source:	Volume 20: File 10 (200)~ Volume 21: File 3 (201-203)
Case
Cast:	Conan Edogawa Ai Haibara Detective Boys Professor Agasa
Case solved by:	Ai Haibara Conan Edogawa Professor Agasa
Next Conan's Hint:	Passport size (Part 1) Above the movie theater (Part 2)
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
Chronology
Prev episode:	« The Disappearing Weapon Case
Next episode:	The Final Screening Murder Case »
List of episodes

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

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.

Attempted Murder
	Location: Secret passage Victim: Conan Edogawa Suspects: Unknown Conan finds a clue to the treasure and enters a secret passage but is attacked by an unknown assailant.

Agasa and Haibara realize that something has happened to Conan. 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: Unknown 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. 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
	Victim: Ayumi Yoshida, and Ai Haibara

People

Katsuo Tabata
	41 years old Mamiya family gardener

Mitsuru Mamiya
	49 years old Husband of the eldest Mamiya daughter (Married into the family)

Takahito Mamiya
	25 years old Son of the eldest Mamiya daughter

Masuyo Mamiya
	83 years old Head of the Mamiya family

Resolution

  Show spoilers »

They find a corpse and realize who the culprit is pretending to be, the mistress. When Haibara and Ayumi were coming out from under a floor tile, the culprit grabs on and tries to kill them. Then Conan, Mitsuhiko, and Genta appear. After re-uniting with the everyone, Conan reveals the location of the treasure. The treasure was the castle, and a beautiful scene. The culprit breaks down realizing that they wasted 10 years and killed a huge number of people just for this. The culprit is captured.

Remastered version

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

See also

• Season 6