The Devil's Circuit

Chronology
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Episode 718 (Int. Episode 770)
Information
Title:	The Devil's Circuit
Japanese title:	悪魔の回路 (Akuma no Kairo)
Original airdate:	November 16, 2013
Broadcast rating:	9,60%
Filler case:	#217
Season:	23
Manga source:	TV Original
Case
Cast:	Conan Edogawa Kogoro Mouri Ran Mouri Sango Yokomizo
Case solved by:	Kogoro Mouri (via Conan)
Next Conan's Hint:	Chocolate bar
Staff
Director:	Yasuichiro Yamamoto
Screenplay:	Nobuo Ogizawa
Storyboard:	Susumu Nishizawa
Episode director:	Kenichi Takeshita
Animation director:	Hiroyuki Notake (supervisor) Miho Tanaka Yui Ushinohama (asst.) Chie Morishita (asst.) Akane Imada (asst.)
Character design:	Masatomo Sudo Kumiko Shishido (design works)
Voice Cast: Minami Takayama as Conan Edogawa Wakana Yamazaki as Ran Mouri Rikiya Koyama as Kogoro Mouri Akio Otsuka as Sango Yokomizo Ōki Sugiyama as Tomonori Ogawara Masato Funaki as Akio Toda Ako Mayama as Chika Kaido Shōto Kashii as Yuichi Kaido Tomo Adachi as Koko Shimura
Music
Opening song:	Butterfly Core
Closing song:	Kimi no Egao ga Nani Yori mo Suki Datta

The Devil's Circuit (悪魔の回路 ,Akuma no Kairo) is the 718th episode of Detective Conan anime.

Cast

Characters
Conan Edogawa Kogoro Mouri Ran Mouri Sango Yokomizo

Gadgets

Gadgets
Voice-Changing Bowtie Stun-Gun Wristwatch

Case

Situation

A writer of Shizuoka invites Kogoro, Ran, and Conan to speak with the detective. During the evening, the woman asks Kogoro if he believes that her husband is cheating on her with her assistant. The next day, Kogoro finds the three people who died poisoned in their homes.

Murder? Suicide?
	Location: Chika Kaidou's villa Victim: Kouko Shimura Age: 29 years old Cause of death: Poison (Poisoned Cup) Suspects: Unknown Kouko had been found dead with a gorgeous cup that belonged to the novelist near her.

Murder? Suicide?
	Location: Chika Kaidou's villa Victim: Yuuichi Kaidou Age: 41 years old Cause of death: Poisoned Sleeping Pills Suspects: Unknown Yuuichi was found dead in bed with a bottle of sleeping pills on the floor near him.

Murder? Suicide?
	Location: Chika Kaidou's villa Victim: Chika Kaidou Age: 40 years old Cause of death: Poison in Chocolate Bar Suspects: Unknown Chika was dead in her office, slumped over on her desk in front of her computer.

People

Chika Kaidou
	Victim (poison) 40 years old Mystery writer

Kouko Shimura
	Victim (poison) 29 years old Chika's apprentice

Yuuichi Kaidou
	Victim (poison) 41 years old Chika's husband

Tomonori Ogawara
	25 years old Shizuoka prefectural police department detective

Akio Toda
	33 years old Editor in charge

Resolution

  Show spoilers »

The three victims actually murdered each other albeit unintentionally. Chika wanted to make it looked like Yuuichi and Kouko planned to kill her by injecting poison into two of her chocolate bars and then hid the syringe inside Yuuichi's room.

Yuuichi's death was because he took the poisoned sleeping pills that Kouko Shimura intended for Chika to use, while Kouko died from the poison that Yuuichi Kaidou smeared on Chika’s glass. Chika had taken the glass to the kitchen to use it to drink some water or tea, because earlier her gas that was filled with water was knocked over. But she changed her mind at the last second leaving behind the poisoned glass, that same glass was found and eventually used to drink some water which ended in another death.

While Yuuichi was setting up the poison, along with being shaken from committing a murder, Toda's call surprised him and he ended up bumping into the box of chocolate bars, causing them to fall on floor. He then hastily picked them up changing the positions of the two poisoned chocolate bars. Unaware of this, Chika threw away two chocolate bars thinking they were the ones that she herself poisoned and accidentally picked up the poisoned bar and ate it, resulting in her death.

In conclusion this was the sequence of events: first Kouko took the poisoned sleeping pills and placed them in Chika’s room, afterwards Yuuichi entered the room and rubbed poisoned on Chika glass cup. As he was leaving he had taken the poisoned sleeping pills that Kouko had left to calm himself down after committing the deed. He took the pills and died shortly there after, when Chika had been talking on the phone to her friend she had knocked over her vase filled with water and not wanting to drink from that she took the poisoned glass to the kitchen.

However for some reason she changed her mind and decided not to drink any water and left her glass cup there, where it was found by Kouko who drank water from the same glass cup and died as well. Chika later on discovered that both her husband Yuuichi and Chika were dead, as they had inadvertently killed each other. She laughed gleefully believing she had won and had cheated death, which explains why Kogoro witnessed her laughing during the night of the "murders". She then went to her room and threw away two of the chocolate bars that she believed were the ones she poisoned and starting writing on her laptop, having found some inspiration during the whole ordeal.

At the same she was eating one of her chocolate bars, however what she did not know was that the positions of the chocolate bars had been switched around due to Yuuichi being a nervous wreck and had accidentally knocked over the box of chocolate bars. As a result they ended up getting mixed up including the poisoned ones, as he hastily put the chocolate bars back in the box and left. As a result the third chocolate bar the one Chika just ate was one of the two poisoned chocolate bars and as a result she died shortly after writing the beginning of her newest and last novel.

Trivia

• The chocolate bar Chika was eating is named Chocolate Shock and is a parody of a popular brand in Japan called Big Thunder.
• The painting in Kaidou villa is about the red leaf room from Solving Mysteries at the Red Leaf Palace, which means that she could have been Ouzaburo Katayose's acquaintance. The place with Mount Fuji reappears in a painting in Suzuki Museum from Kaitou Kid and the Blush Mermaid, in the rental villa from The Tragedy of the Red Woman, and in the hotel reception from The Actress Blogger's Locked Room Case. The painting about a house reappears in Haido Hotel from Deduction Showdown at the Haunted Hotel and in "Aska" Restaurant from The Suspects Are a Passionate Couple. Open spoiler box to see images.

  Show spoilers »

Episode 638 (red leaf).

Episode 646 (house).

Episode 718 (Fujiyama).

Episode 718 (house).

Episode 718 (red leaf).

Episode 724 (Fujiyama).

Episode 754 (Fujiyama).

Episode 814 (Fujiyama).

Episode 822 (house).

BGM listing

#	Song Title	Romaji	Translation	OST
0:01 - 0:18	????
0:49 - 2:06	????
4:46 - 5:29	現金輸送車(回想)	Genkin Yusōsha (Kaisō)	Bank Transport Vehicle (Flashback)	Detective Conan "The Private Eyes' Requiem" Original Soundtrack
5:41 - 6:45	コンシダレーション	Konshidarēshon	Consideration	Detective Conan "Jolly Roger in the Deep Azure" Original Soundtrack
7:12 - 7:29	ゲンタくん	Genta-kun	Genta-kun	Detective Conan "Quarter of Silence" Original Soundtrack
7:33 - 8:58	事件現場 （謎ver.）	Jiken Genba (Nazo ver.)	Scene of the Case (Mystery ver.)	Detective Conan Original Soundtrack 2
9:40 - 11:31		????
12:29 - 14:03	ワッツ ハプニング	Wattsu Hapuningu	What's Happening	Detective Conan "Jolly Roger in the Deep Azure" Original Soundtrack
14:17 - 15:13		????
15:24 - 16:06	スズランの花	Suzuran no Hana	The Lily of the Valley Flower	Detective Conan "The Raven Chaser" Original Soundtrack
16:58 - 17:16	滑りやすい道	Suberiyasui Michi	Slippery Road	Detective Conan "Quarter of Silence" Original Soundtrack
17:45 - 19:04	インターナショナル ケース(インシデント)	Intānashonaru Kēsu (Inshidento)	International Case (Incident)	Detective Conan "Jolly Roger in the Deep Azure" Original Soundtrack
19:11 - 20:32	????
21:25 - 21:53	氷点	Hyouten	Freezing Point	Detective Conan "Quarter of Silence" Original Soundtrack
23:29 - 23:57	なじむ想い	Najimu Omoi	Familiar Feelings	Detective Conan "Quarter of Silence" Original Soundtrack

Gallery

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In other languages

Language	Title	Translation
Catalan (Catalan dub)	El circuït diabòlic	The Diabolical Circuit
Italian	Un triangolo fatale	A Fatal Triangle
Thai	วงจรของปีศาจ
Vietnamese	Vòng tuần hoàn của ác quỷ	The Devil's Circuit

See also

• Season 23