Season 21

Season 21 began airing February 18, 2012.

List of episodes

The following is a list of episodes of Season 21.

{{SeasonItem|679|-|Nagasaki Mystery Theatre (Modern Chapter)|December 8, 2012|next-conan-hint=

Jpn#	Int#	Episode title	Original broadcast	English dub broadcast	Plot	Manga source	Next Conan's Hint
646	-	Deduction Showdown at the Haunted Hotel (Part 1)	February 18, 2012			V73 - F6 ~ V73 - F8	Paint cans
Ran, Sonoko, and Conan meet a strange young man (with Ran's level of martial arts skills) on their way to the Haido Hotel for a free cake buffet. However, soon after they arrive, a man is found dead in the parking lot. Conan reluctantly teams up with their new friend, another high school detective, to solve the case, but there's something strange about him... First appearance of Masumi Sera.
647	-	Deduction Showdown at the Haunted Hotel (Part 2)	February 25, 2012			V73 - F6 ~ V73 - F8	Signed books
No summary yet 1) Conan feels that he has met Sera before. 2) Conan feels that Sera made an erroneous deduction on purpose so that Conan would have to call as Shinichi to solve the case. 3) In the last scene, Sera is revealed to be female, as well as a new transfer student in Ran's class.
648	-	The Case of the Besieged Detective Agency (Outbreak)	March 3, 2012			V73 - F9 ~ V74 - F1	Bush warbler
No summary yet
649	-	The Case of the Besieged Detective Agency (Sniping)	March 10, 2012			V73 - F9 ~ V74 - F1	Toilet
No summary yet
650	-	The Case of the Besieged Detective Agency (Release)	March 17, 2012			V73 - F9 ~ V74 - F1	Kansai dialect
No summary yet Conan realizes that Sera is female.
651	-	Conan vs. Heiji, Deduction Battle Between the Detectives of the East and West (1 Hour Special)	March 24, 2012			V74 - F5 ~ V74 - F7	Ticket
Heiji and Kazuha have come to Tokyo to visit Ran, Kogoro, and Conan. When they are taking the public bus to the detective agency; Kazuha sees the restaurant that is famous for it's curry and remembered that her mother wanted her to get some to bring it back to Osaka. She goes to the restaurant while Heiji heads for the agency. When he arrives there and meets with Conan, Ran, Sera, and Kogoro he gets a call from Kazuha saying that she needs help and cannot leave the restaurant because there was a murder. Sera suggests that Heiji and "Shinichi" through Conan should have a deduction batter to see which detective is better; East or West. 1) When Conan gets that "look" after figuring out the culprit's identity, Sera looks at him, unsurprised, and thinks, "We have a winner." (Conan does not notice.) 2) Agent Camel gets the feeling that he's met Sera before, so he takes a picture of her (with only the side of her head showing) and sends it to Agent Jodie and Agent James Black. Jodie says she has the same feeling about "him", but Black says he has never seen "her" before. When Camel asks how he knew Sera was female, he responds "wise man's intuition".
652	-	The Design of Poison and Mirage (EYE)	April 21, 2012			V74 - F8 ~ V75 - F2	Tiles
No summary yet
653	-	The Design of Poison and Mirage (S)	April 28, 2012			V74 - F8 ~ V75 - F2	Slippers
No summary yet
654	-	The Design of Poison and Mirage (Poison)	May 5, 2012			V74 - F8 ~ V75 - F2	Wristwatch
No summary yet
655	-	The Design of Poison and Mirage (Illusion)	May 12, 2012			V74 - F8 ~ V75 - F2	Glasses' lens
No summary yet
656	-	The Professor's Video Site (Part 1)	May 19, 2012			V74 - F2 ~ V74 - F4	Ear
No summary yet Sera asks the Detective Boys about Agasa, Haibara and Shinichi's house, and she sees Okiya sneaking a glance at her from a window.
657	-	The Professor's Video Site (Part 2)	May 26, 2012			V74 - F2 ~ V74 - F4	Tablecloth
No summary yet Conan realizes that Sera is suspiciously interested in Haibara.
658	-	Chocolate's Hot Trap	June 2, 2012			TV Original	Airbag
Conan, Ran and Sonoko were invited to the opening ceremony of "Le trésor de fruits," a chocolate store. During a demonstration of how the opening cermony would be like, suddenly, a fire breaks out. Yukihiko Tsujimoto, the man that Mayuko Sakura was supposed to marry, got killed in the fire. Was this just all an accident or is this actually a case of murder?
659	-	Co-Investigating with a First Love (Part 1)	June 9, 2012			V75 - F6~8	Rear window
No summary yet
660	-	Co-Investigating with a First Love (Part 2)	June 16, 2012			V75 - F6~8	Key
No summary yet
661	-	Kogoro-san is a Good Man (Part 1)	June 23, 2012			V75 - F3~5	Clothespins
No summary yet
662	-	Kogoro-san is a Good Man (Part 2)	June 30, 2012			V75 - F3~5	The name
No summary yet
663	-	Chase the Miyama Stag Beetle	July 7, 2012			TV Original	Cigarette butt
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.
664	-	The Great Dog Coeur's Triumph 2	July 14, 2012			TV Original	Ant
The Detective Boys find a strange map on the back of a piece of paper, with many 'x's at different locations. As the group visits each house, they are able to figure about the meaning behind the 'x's, as well as the identity of the murderer!
665	-	The Suspicious Initial K	July 21, 2012			TV Original	Umbrella
No summary yet
666	-	The Intimidator in the Rainy Night	July 28, 2012			TV Original	Waiter
No summary yet
667	-	Wedding Eve (Part 1)	September 1, 2012			V75 - F9~11	Cake
Kogoro, Ran and Conan are invited to the pre-wedding party of Kogoro's former classmate, but the party ends when the bride-to-be is found burned to death in her car. First appearance of Tooru Amuro.
668	-	Wedding Eve (Part 2)	September 8, 2012			V75 - F9~11	Mirror
No summary yet
669	-	Treasure in the Tower of Darkness (Part 1)	September 15, 2012			TV Original	Circle and triangle
No summary yet
670	-	Treasure in the Tower of Darkness (Part 2)	September 22, 2012			TV Original	Broken cellphone
No summary yet
671	-	Detectives' Nocturne (The Case)	October 6, 2012			V76 - F1~5	Listening device
No summary yet
672	-	Detectives' Nocturne (Kidnapping)	October 13, 2012			V76 - F1~5	Keep the change
No summary yet
673	-	Detectives' Nocturne (Deduction)	October 20, 2012			V76 - F1~5	Left-handedness
No summary yet
674	-	Detectives' Nocturne (Bourbon)	October 27, 2012			V76 - F1~5	Barbecue
No summary yet At the end of the episode Vermouth is talking on the phone with Bourbon. Bourbon could be Subaru Okiya, Tooru Amuro, or Masumi Sera.
675	-	Won't Forgive One Millimeter (Part 1)	November 10, 2012			V76 - F6~8	Cup of water
No summary yet
676	-	Won't Forgive One Millimeter (Part 2)	November 17, 2012			V76 - F6~8	Surfboard
No summary yet
677	-	The Sandy Beach Without Footprints	November 24, 2012			TV Original
No summary yet
678	-	Nagasaki Mystery Theatre (End of Edo Chapter)	December 1, 2012			TV Original
No summary yet
manga-source=TV Original	680	-	Subaru Okiya part 1 (the truth) (Modern Chapter)	December 15, 2012			TV Original
No summary yet

Theme songs

Openings

• Episodes 642-666: Miss Mystery by BREAKERZ
• Episodes 667-???: Kimi no Namida ni Konna ni Koi Shiteru by Natsu Iro

Endings

• Episodes 644-653: Kanashii Hodo Kyō no Yūhi Kirei da ne by grram
• Episodes 654-666: Overwriting by BREAKERZ
• Episodes 667-???: Koi ni Koishite by Mai Kuraki

See also

• Anime
• Staff Listing Season 21
• Season 20