The BEST episodes of Detective Conan season 21

Every episode of Detective Conan season 21, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Detective Conan season 21!

The cases of a detective whose physical age was chemically reversed to that of a prepubescent boy and he must hide his true mental development.

Last Updated: 11/13/2024Network: YTV (JP)Status: Continuing
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Wedding Eve (Part 2)
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20.00
1 votes

#1 - Wedding Eve (Part 2)

Season 21 - Episode 23 - Aired 9/8/2012

A second DNA test with sterile samples reconfirms the rough DNA match leading Conan to a conclusion. Conan tranquilizes Kogoro and reveals Banba and Kamon are opposite sex identical twins. The secret phone calls were to a medical consultant with the final phone call confirming the genetic match. Learning of his, Kamon clasped her face into her hands, scratching some skin off, and committed suicide. In the aftermath, Amuro pays Kogoro to have him as his apprentice

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Treasure in the Tower of Darkness (Part 1)
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1 votes

#2 - Treasure in the Tower of Darkness (Part 1)

Season 21 - Episode 24 - Aired 9/15/2012

The Detective Boys meet Nanami Kyoudou, who's grandfather, Seitarou Kyoudou is the one who built "The Black Tower", rumored to have no entrance and treasure hidden within. Later, they visit her house

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Deduction Showdown at the Haunted Hotel (Part 2)
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#3 - Deduction Showdown at the Haunted Hotel (Part 2)

Season 21 - Episode 2 - Aired 2/25/2012

After investigating the room, Sera declares the culprit.

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Co-Investigating with a First Love (Part 1)
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9.86
29 votes

#4 - Co-Investigating with a First Love (Part 1)

Season 21 - Episode 14 - Aired 6/9/2012

The Detective Boys discover officer Chiba's has been vandalized with a threatening word. Realizing is the culprit is the same person who has been on a vandalism spree that month, the Detective Boys push Chiba into investigating it with his first love

Directors: Koujin Ochi
Detectives' Nocturne (Kidnapping)
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9.67
30 votes

#5 - Detectives' Nocturne (Kidnapping)

Season 21 - Episode 27 - Aired 10/13/2012

Arriving at Katshitsuka's home, Ran receives a phone call from Masumi. The phone call receives noise which Tooru deduces to indicate the house is bugged.

Chase the Miyama Stag Beetle
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0 votes

#6 - Chase the Miyama Stag Beetle

Season 21 - Episode 18 - Aired 7/7/2012

The Detective Boys wish to capture a few beetles to bring to school, and as a result, visit Agasa's old friend in the mountains. The Detective Boys manage to find a bunch of beetles at night, but return to find Namatame injured. Namatame's last words are "Miyama Stag Beetle" before losing consciousness.

Directors: Koujin Ochi
Cactus Rhapsody
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#7 - Cactus Rhapsody

Season 21 - Episode 35 - Aired 12/15/2012

At the greenhouse, the wealthy property owner named Zenzou Sunada is showing Conan, Ran, and Sonoko the golden barrel cactus and it blooms flowers after 50 years

Directors: Koujin Ochi
The Great Dog Coeur's Triumph 2
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#8 - The Great Dog Coeur's Triumph 2

Season 21 - Episode 19 - Aired 7/14/2012

At night, Hiroshi Yagisawa and his dog, Coeur are taking a walk in Beika Street. Coeur sense something strange so Coeur is showing Yagisawa that she found the dead body in underground passageway.

Directors: Koujin Ochi
The Suspicious Initial K
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#9 - The Suspicious Initial K

Season 21 - Episode 20 - Aired 7/21/2012

The guard named Zenkichi Ooka is threatening two people to keep giving money to him. At night, Conan, Ran, and Kogoro came from the store after they had delicious spring rolls.

Directors: Koujin Ochi
The Intimidator in the Rainy Night
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#10 - The Intimidator in the Rainy Night

Season 21 - Episode 21 - Aired 7/28/2012

Mio was attacked by Karashima but attacks back in self-defense.

Directors: Koujin Ochi
Wedding Eve (Part 1)
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#11 - Wedding Eve (Part 1)

Season 21 - Episode 22 - Aired 9/1/2012

At Ristorante Sundayrino, Raita Banba and Hatsune Kamon are getting married. Kogoro, Ran, and Conan are also there. Everybody is having a great time with them. Later, Kogoro, Ran, and Conan are introducing themeselves to Kamon at the table. Ran heard that it was love at first sight for Banba and Kamon. As the night progresses, Banba receives a 'Goodbye' text message from Kamon. Outside, suddenly, Kamon's car exploded, right before Conan's eyes.

Treasure in the Tower of Darkness (Part 2)
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#12 - Treasure in the Tower of Darkness (Part 2)

Season 21 - Episode 25 - Aired 9/22/2012

The mystery of Darkness Tower is revealed by Conan

Detectives' Nocturne (The Case)
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0 votes

#13 - Detectives' Nocturne (The Case)

Season 21 - Episode 26 - Aired 10/6/2012

Kogoro prepares to meet with the client Kei Katshitsuka. While waiting, he receives mail of Katshitsuka who changes their meeting location to a local restaurant. There, Kogoro realizes the cell phone address is different from the first message he received from the client.

Detectives' Nocturne (Deduction)
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#14 - Detectives' Nocturne (Deduction)

Season 21 - Episode 28 - Aired 10/20/2012

Conan stops feigning his sleep and tells his kidnapper who is really she !!

Detectives' Nocturne (Bourbon)
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#15 - Detectives' Nocturne (Bourbon)

Season 21 - Episode 29 - Aired 10/27/2012

After visiting the three, Conan explains the robber in the video was left-handed and only Takayo Tegawa fit that description.

Won't Forgive One Millimeter (Part 1)
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#16 - Won't Forgive One Millimeter (Part 1)

Season 21 - Episode 30 - Aired 11/10/2012

The Detective Boys are invited to the Konno residents for a barbecue as a thanks for solving a case for them earlier. When the couple argue, the children grow concerned. Later, the husband cannot find his cell phone so his wife goes with him inside to look

Won't Forgive One Millimeter (Part 2)
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#17 - Won't Forgive One Millimeter (Part 2)

Season 21 - Episode 31 - Aired 11/17/2012

The wife, Sumika, tried to scare the husband to cure his hiccups

The Sandy Beach Without Footprints
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#18 - The Sandy Beach Without Footprints

Season 21 - Episode 32 - Aired 11/24/2012

Conan, Ran, and Kogoro went to Ohama Coast from Beika Street for two hours and they are going to have fun surfing at the beach.

Nagasaki Mystery Theatre (End of Edo Chapter)
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#19 - Nagasaki Mystery Theatre (End of Edo Chapter)

Season 21 - Episode 33 - Aired 12/1/2012

Conan, Ran, and Kogoro must've slip through time (not literally). Ran won a prize at a shopping district lottery, they go to Nagasaki.

Directors: Koujin Ochi
Nagasaki Mystery Theatre (Modern Chapter)
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#20 - Nagasaki Mystery Theatre (Modern Chapter)

Season 21 - Episode 34 - Aired 12/8/2012

In the hospital, Sakota is lying on the bed to get his treatment done. There's a high possibility that Sakota was struck with bare hands. The Nagasaki police took in the karate girl with a black belt, Ran, who was the main suspect to the station for questioning

Directors: Koujin Ochi
Kogoro-san is a Good Man (Part 2)
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#21 - Kogoro-san is a Good Man (Part 2)

Season 21 - Episode 17 - Aired 6/30/2012

Conan completes his investigation and realizes who the murderer is.

Directors: Koujin Ochi
Kogoro-san is a Good Man (Part 1)
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#22 - Kogoro-san is a Good Man (Part 1)

Season 21 - Episode 16 - Aired 6/23/2012

When Ran, Sonoko, Sera, and Conan are walking, they receive a phone call from Ran's father Kogoro, who asks her not to bother cooking dinner for him as he will be gone for the night.

Directors: Koujin Ochi
Co-Investigating with a First Love (Part 2)
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#23 - Co-Investigating with a First Love (Part 2)

Season 21 - Episode 15 - Aired 6/16/2012

Chiba is unable to recall Naeko's face though notes his familiarity. During the investigation, Conan realizes the culprit's motif and has the police let the suspects leave.

Directors: Koujin Ochi
Chocolate's Hot Trap
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#24 - Chocolate's Hot Trap

Season 21 - Episode 13 - Aired 6/2/2012

Conan, Ran, and Sonoko are invited to the opening ceremony of a chocolate shop that is supported by the Suzuki Group. They meet a woman named Mayuko Sakura, the shop producer. Next they meet a man named Yukihiko Tsujimoto, the chocolatier and he's Mayuko's fiancé. During Tsujimoto's show, the fire breaks out in the shop, killing Tsujimoto. Was this a terrible accident or a planned murder?

Directors: Koujin Ochi
The Professor's Video Site (Part 2)
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#25 - The Professor's Video Site (Part 2)

Season 21 - Episode 12 - Aired 5/26/2012

Conan realizes the kidnappers invaded Agasa's home too quickly and deduces they have visited recently; Agasa reveals three pairs of customers have expressed interest in the vase.

Directors: Koujin Ochi