The Devil's Circuit

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

Chika Kaidou
	Victim (poison); 40 years old; Mystery writer;

Chronology

‹ Dancing Demon at the Noh Mask Mansion

List of Episodes

A Dispute Over a Platinum Ticket ›

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

Cast

Characters

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

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 vase 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 poison 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. 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 »

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

For the full gallery, click here:

In other languages

Language	Title	Translation
Catalan (Catalan dub)	El circuït diabòlic	The Diabolical Circuit
Galician	O circuíto demoníaco	The demonic circuit
Italian	Un triangolo fatale	A Fatal Triangle
Thai	วงจรของปีศาจ
Vietnamese	Vòng luân hồi của quỷ dữ	The Devil's Circuit

v • d • e Season 18 (2013)
#681: The Life-Threatening Broadcast of Love (Begin Broadcasting) #682: The Life-Threatening Broadcast of Love (Desperate Situation) #683: The Life-Threatening Broadcast of Love (Enter the Scene) #684: Froth, Steam, and Smoke (Part 1) #685: Froth, Steam, and Smoke (Part 2) #686: A Car Carrying a Time Bomb #687: The Unsolvable Ice Trap #688: Detective Takagi Finds 30 Million Yen #689: The Client's Message #690: Yusaku Kudo's Cold Case (Part 1) #691: Yusaku Kudo's Cold Case (Part 2) #692: The Evening Cherry Blossom Viewing Route on Sumida River (Part 1) #693: The Evening Cherry Blossom Viewing Route on Sumida River (Part 2) #694: The Missing Sweets in the Old Shop #695: The Roses in the Vineyard #696: The Flowerbed Vandal's Scheme #697: The Window at the Girls' School #698: Unbelievable! The Case of the Crashed UFO #699: The Shadow Approaching Haibara's Secret (Part 1) #700: The Shadow Approaching Haibara's Secret (Part 2) #701: The Jet-Black Mystery Train (Departure) #702: The Jet-Black Mystery Train (Tunnel) #703: The Jet-Black Mystery Train (Intersection) #704: The Jet-Black Mystery Train (Destination) #705: Conan in a Locked Room #706: Bourbon Figures It Out #707: The Framed Great Detective #708: The Man Who Fell Slowly #709: An Unconfirmed Shocking Case #710: Everyone Saw (Part 1) #711: Everyone Saw (Part 2) #712: Heiji Hattori and the Vampire Mansion (1) #713: Heiji Hattori and the Vampire Mansion (2) #714: Heiji Hattori and the Vampire Mansion (3) #715: Heiji Hattori and the Vampire Mansion (4) #716: Dancing Demon at the Noh Mask Mansion (Part 1) #717: Dancing Demon at the Noh Mask Mansion (Part 2) #718: The Devil's Circuit #719: A Dispute Over a Platinum Ticket #720: Fire and Water Mystery Tour (Aso Part) #721: Fire and Water Mystery Tour (Kumamoto Part) #722: Sweet and Cold Delivery Service (Part 1) #723: Sweet and Cold Delivery Service (Part 2)
Yellow background = TV Original
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Cast

Gadgets

Case

Situation

People

Resolution

Trivia

BGM listing

Gallery

In other languages

See also