The Big Investigation of the Nine Doors

Chronology
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Episode 182 (Int. Episode {{{int-episode}}})
Information
Title:	The Big Investigation of the Nine Doors
Japanese title:	大捜索9つのドア (Daisōsaku no Kokonotsu no Doa)
Original airdate:	February 28, 2000
Broadcast rating:	21%
Filler case:	#66
Season:	7
Manga source:	TV Original
Case
Cast:	Conan Edogawa Detective Boys Ai Haibara
Case solved by:	Conan Edogawa Detective Boys
Next Conan's Hint:	Roman alphabet
Staff
Director:	Yasuichiro Yamamoto Kenji Kodama
Screenplay:	Kazunari Kouchi
Storyboard:	Michiyo Sakurai
Episode director:	Nana Harada
Animation director:	Izumi Shimura
Voice Cast: Minami Takayama as Conan Edogawa Megumi Hayashibara as Ai Haibara Yukiko Iwai as Ayumi Yoshida Ikue Otani as Mitsuhiko Tsuburaya Wataru Takagi as Genta Kojima, Next Conan's Hint Rumi Ochiai as Yuko Sakurai Kihachiro Uemura as Masakazu Shima Mayumi Asano as Asuka Shima Ayako Kurosaki as Misato Uehara Chieko Enomoto as Fumiko Ishida Yoshiko Okamoto as Yasue Ishida Isshin Chiba as Policeman A Takayuki Inoue as Policeman B Michie Tomizawa as Ikuyo Hasegawa
Music
Opening song:	Mysterious Eyes
Closing song:	Secret of my heart

Cast

Characters
Conan Edogawa Ayumi Yoshida Mitsuhiko Tsuburaya Genta Kojima Ai Haibara

Gadgets

Gadgets
Stun-Gun Wristwatch

Case

Situation

The Detective Boys are walking home one day when they discover two S-Hooks and a wedding ring engraved with the initials M to A. They see this combination of items as an S.O.S. message, and decide to investigate.

Kidnapping
	Location: Mansion Victim: Woman Suspects: People in the rooms that end with 5 A woman sends an SOS message for someone to rescue her! It's up to the Detective Boys or it'll be too late!

People

Misato Uehara
	Woman on the 6th floor

Yuko Sakurai
	Woman on the 7th floor

Woman
	Victim (kidnapped)

Masakazu Shima
	Man on the 3rd floor

Asuka Shima
	Woman on the 3rd floor

Policeman #1
	Police officer

Policeman #2
	Police officer

Fumiko Ishida
	Woman on the 7th floor

Yasue Ishida
	Fumiko's mother-in-law

Yuuta Ishida
	Fumiko's son

Resolution

  Show spoilers »

The culprit is the woman who claims to be Misato Uehara. The letters on the ring are "M to A", from Misato to Akihiko, since it is Akihiko's ring, not Misato's. However, the culprit thinks that the letters are "A to M", revealing that she is the fake Misato. Her real name is Ikuyo Hasegawa. Ikuyo attempts to drug Conan but is put to sleep. Conan then rescues the real Misato.

Ikuyo's motive is then revealed. She came to kill Akihiko, who fired her because she scammed huge amounts of money from the company. However, she only met Misato, Akihiko's wife, so she intended to use her as a hostage.

Later, the Detective Boys (including Haibara) force Conan to carry all of their book bags home by himself as punishment for "stealing the scene."

BGM listing

#	Song Title	Romaji	Translation	OST
1	Mysterious Eyes	Mysterious Eyes	Mysterious Eyes	Mysterious Eyes
2	のんびり気分	Nonbiri Kibun	Carefree Feeling	Detective Conan Original Soundtrack 1
3	小さな巨人	Chiisana Kyojin	A Small Great Person	Detective Conan Original Soundtrack 1
4	少年探偵団のテーマ （摩天楼ヴァージョン）	Shōnen Tanteidan no Tēma (Mantenrō Vājon)	The Detective Boys' Theme (Skyscraper Version)	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
5	犯人のアジト	Hannin no Ajito	The Culprit's Hideout	Detective Conan Original Soundtrack 1
6	阿笠博士のテーマ	Agasa Hakase no Tēma	Professor Agasa's Theme	Detective Conan Original Soundtrack 1
7	犯人のアジト （いよいよver.）	Hannin no Ajito (Iyoiyo ver.)	The Culprit's Hideout (More and More ver.)	Detective Conan Original Soundtrack 2
8	西の名探偵 （摩天楼ヴァージョン）	Nishi no Meitantei (Mantenrō Vājon)	The Great Detective of the West (Skyscraper Version)	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
9	犯人からの電話	Hannin Kara no Denwa	Phone Call From the Culprit	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
10	怪人包帯男２	Kaijin Hōtai Otoko 2	The Mysterious Bandaged Man 2	Detective Conan Original Soundtrack 3
11	恋のトランプゲーム占い	Koi no Toranpu Gēmu Uranai	Love's Fortune-Telling Card Game	Detective Conan "The Fourteenth Target" Original Soundtrack
12	真相究明	Shinsō Kyūmei	Investigating the Truth	Detective Conan "The Fourteenth Target" Original Soundtrack
13	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
14	犯人からの電話	Hannin Kara no Denwa	Phone Call From the Culprit	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
15	忍び寄る危機	Shinobiyoru Kiki	Incoming Crisis	Detective Conan "The Time-Bombed Skyscraper" Original Soundtrack
16	「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
17	Secret of my heart	Secret of my heart	Secret of my heart	Secret of my heart
18	蘭のテーマ	Ran no Tēma	Ran's Theme	Detective Conan Original Soundtrack 1

See also

• Season 7