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WMG / Detective Conan

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Haibara is lying about the terror thing.

Haibara has said to Conan that, if he should tell Ran exactly what the hell is going on, then she'll be terrified. Now, this contradicts what she says about the strength of someone's feelings for a person affecting how they act with that knowledge. Look at Yukiko, Yuusaku, and Agasa's reactions. They don't believe him, but they help him hide. Ran would probably beat the crap out of him and then calm down and help him through the series later on.

  • Haibara said that before she knew anything about Ran. She's since re-evaluated her opinion. Now her objection will most likely be, "She'd want to get involved, and that would get her killed faster than you can say 'Ano Kata'."

Shinichi and Shiho are blood relations of Vermouth's to some degree

Shiho is either the daughter or niece of Vermouth.
This is in allusion to my earlier point about Shiho (and Conan) being blood relations of Vermouth's to some measure. Also, consider that although we haven't yet heard their finish, the last we hear of the cassettes left to Shiho by her parents sounds like the stock build-up to a revelation that she's actually adopted. Adding in the possibility that a genetic trigger is necessary to keep you from being killed by APTX-4869, it becomes very likely that Shiho was "rescued" from her actual parents by the adoptive ones; she may well have been at risk of being treated like a guinea pig or something, to see how much genetic drift can remain before APTX-4869 winds up killing you. Vermouth is an obvious candidate for this mother. However, if Subaru really is the head of the Black Organization, the possibility emerges that he's Vermouth's brother, and also that Shiho might instead be his biological daughter.

Subaru is MI-6
Gosho Aoyama already did the whole, "They're an Organization member! NO THEY'RE NOT!!!" thing with Jodi, so it almost seems obvious that he's not a member either. But he's probably not FBI or CIA because we've already had characters from there introduced, and we already know that they're involved. Possibly he IS still Bourbon, but he's a double agent like Kir. And it was a little random that the Mouris would be invited to London by a random rich and well connected lady who lost her cat. Maybe it was on purpose so that agents could observe Conan a little less obviously (stranger in a familiar place versus stranger in a strange place). Maybe the woman is simply an employee of the British Government.
  • As far as we know from Chapter 898, Subaru is Akai, and Akai is FBI. Is it possible for one person to be a member of two government agencies?

Subaru is actually...
A member of the KGB, but is not Bourbon. Bourbon is actually Akai, who's been convinced somehow to become Bourbon by the Black Org. Or, Subaru is both KGB/the modern Russian spy unit, and is Bourbon, but the reason why he hates Akai is that Akai was approached many years ago to be a Russian spy within the FBI and the Black Org, but he refused and killed the agent that approached him, who was a friend or blood relation of Subaru. Hence why he, as Bourbon, hates Akai more than even Gin.
  • No clue about him being a member of KGB or not, though. Like theory above, is it possible for one person to be a member of two government agencies?

The real identity of the detective girl Sera is...
  • A relative of Shuichi Akai. With the way Aoyama Gosho's art style looks there happens to be a lot of similar looking characters, but from a certain point of view, Sera's facial structure is similar to Shuichi's.
    • Confirmed - Sera is Shuuichi's younger sister.
  • Really Shuichi Akai is Sera. After being "killed" by Rena his only option to hide from the Black Organization was to change his identity and get a sex change. That's the reason Sera is so flat chested, it is because she's used to be a man. It becomes clear why "Sera" deleted the video that caught a glimpse of Haibara off the internet; it was naturally to protect the little sister of his dead lover. And why the other three FBI find "Sera" to look slightly familiar is because his real identity is Shuuichi.
  • A girl Shinichi met while he was in America. She stated outright that's where she is from her first introduction. Naturally she being a fellow mystery lover, she fell in love with Shinichi, but only now decides to go find him in Tokyo. She might be bi-sexual, and wouldn't mind a OT3 with Ran, Shinichi, and herself.

Okiya Subaru is Akai Shuuichi.
Mentioned above somewhere, but needs it's own entry.
  • Both Okiya and Akai give Haibara the chills she from members of the Organization.
    • Despite that, Conan trusts Okiya enough to let him stay at the Kudo house. "No fan of Sherlock Holmes could be bad" is really not a good explanation, note  and if it's "friends close, enemies closer", he could have said so. Furthermore, Conan goes beyond letting Subaru stay at his house; he lends him the keys, asks Okiya to pick him and the kids (including Haibara) up, help out with cases a couple times, and more.
  • They also just plain look similar, so that all Akai would need are glasses and a wig, or he could dye and straighten his hair. They wear similar styles of clothes, too.
  • Ran seemed to think Okiya was familiar the first time she met him, having previously encountered Akai three times.
  • The names in Detective Conan almost always mean something. Akai means "red", and in the "Red, White and Yellow" case, Okiya Subaru was the "red guy".
  • In issue #800, Okiya says "Don't make that kind of face" to Haibara. In issue #802, she remembers Akai using the same phrase while undercover as Moroboshi Dai.
  • In issue #810, Okiya says he can't force Haibara to come with him, "because of [a] promise he made her..." If he is Akai, then he could be talking about Akemi Miyano.
    • Which then implies he knows who Haibara is.
  • The Detective Conan Wiki has expanded this theory.
  • New theory: Okiya Subaru is Akai AND Bourbon. Akai went and reinfiltrated the B.O. under a different identity.
    • Shuuichi is indeed Okiya. Bourbon, on the other hand, is Amuro.

Sera's "Little Sister" is a victim of APTX 4869
And is actually Sera's mom or something. In chapter 878 we learn that Conan planted a listening bug on Sera, and the girl seems to know far more than she should, telling Sera to give Conan the enigmatic phrase that the little girl is "Sera's little Sister from outside the Domain". Also, it's possible that the figure is a member of the B.O, FBI, or CIA.
  • Which is hilariously ironic, if you remember Sera said that her mother is a busty woman, while in fact the mother is currently shrunk into a form of little girl.

Bourbon will...
  • Find out Conan is Shinichi
  • Think Vermouth is training Conan to be a Black Org member
  • die/get killed
  • become a double agent for the FBI
  • will join Vermouth as Shinichi's secret secret-keeper
  • or get run over by a car
    • So far he's managed to be revealed as an agent of Japan's secret police organization as a NOC in the Black Org.

In the last volume of the manga...
The "keyhole character" featured on the back cover will be either Conan, or Gin.

Last case will be similar to the event in "The Final Problem"
That is, Conan Edogawa will fall to his death (along with the big boss.) But Shinichi Kudo will return instead.

Ai will not go back to her 18-year old self.
Think about it: What's left for her? The Syndicate was her whole life. She has no family to go back to, and she has a pretty good life with Doc Agasa and the detective boys. This is a chance to start over and use her talents for good.
  • Totally agree! I've thought about this too. I think she'd be much happier staying as Ai than going back to being Shiho.
    • Imagine yourself at 18 and turned back into a 6 years old kid. Would you want to go to school all over again? Not to mention that she's a genius, she'd be bored to death. Furthermore, she can't go and show that she's a prodigy, since then the Syndicate will know her identity right away. So, pretty much, she's gonna be pretending to be a normal person for tfe. Not a good life, I think.
      • She doesn't seem to exhibit anything near the same level of boredom Shinichi has as Conan, though. The social side of things (Friends like Ayumi& the boys) may serve to counteract the boredom from the academic side.
  • Maybe she won't because she is dead?

Akai siblings and the mysterious girl
The mysterious girl is in fact Akai's youngest sister. The second brother is actually Sera, who is really a male all along and disguised as his sister. Oh, and Shuukichi Haneda is Rum. What? This is WMG?
  • Or perhaps, Shuukichi Haneda is both Rum and the second brother. However, it seems to be unlikely as of Chapter 908, Haibara states that Rum has lost one of his eyes. Both Shuukichi's eyes look quite normal, unless one of his eyes is really an artificial or prosthetic all along.

Agent Camel is a member of the Black Organization
Because why would your first thought be 'Better get rid of this old man so he's not hurt in the mission' instead of 'Is the old man here for the meeting with Gin too?'. The old man then disappeared before anybody we found out what he was doing there.

Vermouth is Ano Kata's mother.
This is a wild one, alright, but bear with me. This is the surprising connection between them that Bourbon reveals. It would explain why Vermouth is his/her favorite, though he/she probably does not him/herself know. Vermouth has apparently not aged in 20 years, so it's possible that she took APTX 4869 some time after giving birth to Ano Kata, and joined her/his organization under a different name. Ano Kata secretly prefers her because she looks like her/his mother.

Alternatively, Vermouth is the Boss's daughter.
She subverts as much as supports Ano Kata's goals because she was pressured into the organization to begin with and now feels trapped by the life she was groomed for, acting like a moralless Chaotic Neutral and helping and hindering both sides of the conflict for her own convenience with only one goal: protecting her own interests and whatever independent power she can get. She extends favor to Shinichi and Ran because they saved her despite her crimes and gave her hope that her criminal existence does not render her future completely void (as seen in the Golden Apple case, where she seemed genuinely depressed until the end). She's not a good person and she's aware of it and made peace with it, but she doesn't want her birthright allegiance to the Black Org to define her life, either.
  • Given Karasuma's age, Vermouth's apparent lack of aging could be the result of her father's early experiments. That the Boss would willingly experiment on their own daughter in their attempts to develop a drug that could work for them may have been what kicked off her disloyalty and dissatisfaction at the fact that her life was lashed to the Black Org for as long as it existed. To make a much wilder shot in the dark, perhaps if the "Silver Bullet" precursor drug is related to Vermouth's youth, Vermouth destroyed the lab where the Miyanos were producing the drug in revenge, preventing the Boss from attaining unnatural youth themself.]]

The Tottori district has something to do with the Black Organisation
  • In Chapter 450, the police were talking about a robbery syndicate that messes up security and committed murder. This causes them to send Detective Chousuke Takagi to Tottori.
  • Ai also reacts weirdly upon hearing the words Kurayoshi City, which is located in Tottori.

Rumi Wakasa IS Asaka, but NOT Rum
Wakasa is way too obvious to be Rum. However, Asaka is still missing and she may be a Red Herring in general. Considering that Wakasa has some combat skills, she might be the missing bodyguard. She may be in the Witness Protection Program and that's why Kuroda knows her.

Kanenori Wakita is Rum
Ai Haibara has met several Rum suspects, such as Yamato, Kuroda and Wakasa, but she never felt the BO aura from any of them. On the contrary, Haibara says herself that she's fond of Wakasa, despite her being very suspicious of Subaru earlier. She hasn't met Wakita yet. Yamato is very unlikely to be Rum, since he got his injuries very recently when he was introduced. Kuroda was in a coma for about 10 years and the BO would probably not let him in the hospital alive for that long and it's unlikely that Rum would have kept their Number Two rank if they were in a coma for 10 years. Also, Wakita is very similar to Bourbon. Wakita is more interested in Kogoro than in Conan, while Yamato, Kuroda and Wakasa are all aware of Conan's intelligence, with the former two having figured out that he's the secret behind Kogoro's success, while Wakasa specifically tests Conan's deduction skills. With the exception of Vermouth, Kir and Bourbon, nobody from the BO is aware of Conan. Wakita starts showing interests in Shinichi Kudou after that famous tweet.

Gin will wind up taking APTX 4869
During the final showdown Gin will be the last Black Organization member standing and will decide its Better to Die than Be Killed so just as Conan and other detectives (and Ran) are beating down the door, he'll take the APTX... but instead of dying he will turn into a child right in front of everyone's eyes. This is how Shinichi's secret will be revealed and the existence of a de-aging drug will become well-known at least within the police force.

Rum is multiple people
There are either multiple Rums or one Rum and several decoys. This is why conflicting accounts were given of Rum's appearence and Ai imagined 3 sillhouettes when thinking of Rum. The only commonality is they are all blind in one eye and have a prosthetic eye. Wakita, Wakasa, and Kuroda are the 3 Rums. This explains why Wakasa is terrified whenever she sees another person who is blind in one eye. In the Burning Tent case, it wasn't just Kuroda who terrified her, but also one of the suspects when he said he almost needed a prosthetic eye after suffering an eye injury.

Wakasa let her name get put in the newspaper, when her name is clearly connected to ASACA RUM, which BO is paranoid about. She is perhaps worried one of the other Rums is coming after her for that, perhaps the true Rum. She may have figured out there were other Rums, all blind in one eye, but she doesn't know who they are, hence her terror at seeing other people who are or may be blind in one eye.

  • Granted, her look toward the suspect in the Burning Tent case who almost needed a prosthetic eye was perhaps closer to hatred than terror.

    • Interestingly, when Wakasa had the look of hatred on her face at the suspect, Ai Haibara—who was looking away and could not have seen Wakasa's expression—apparently sensed an aura coming off of Wakasa in that moment and was terrified by it. Ai's reaction was similar to when she encountered BO members.[1]

      • Ai might have been reacting to Kuroda, who later admitted to spying on thr group and had a special interest in Wakasa. Also, the way Kuroda disarmed the perp put Ayumi in danger, requiring Wakasa to come up and catch her. This may point to Kuroda being Rum.

    • Wakasa's hatred may have been directed not toward the guy who almost had his eye put out, but rather toward the guy who almost put it out. Wakasa may have had a similar experience and is secretly resentful for it.

Wakasa Rumi's right eye is a prosthetic

Wakasa Rumi appears to blind in her right eye (Burning Tent Case). Rum was described as possessing an artificial eye on one side of their face. But if Wakasa Rumi is Rum and has an artificial eye in her right eye (out of which she cannot see), then how is it that eye looks normal, she can cry out of that eye (Burning Tent Case), and she can move that eye in sync with her seeing one? Well, it is actually quite possible and would be a case where Gosho Aoyama Did the Research. tells us that a prosthetic eye can move in sync with the seeing eye and you can cry out of it, due to the fact that the muscles and tear ducts are not inside the eyeball itself.[2] If you search for prosthetic eye online, they can look quite realistic. So this is actually quite consistent with Wakasa having a prosthetic eye. The only issue would be that the pupil in the prosthetic eye would not change size in response to light, but her wearing glasses would help conceal that, especially if she has a highly reflective right lens (which she seems to have).

Now, if she has a realistic prosthetic eye and she is Rum, then how is it that whoever she talked to in the past knew she had a glass eye? Well, before becoming an assistant teacher, she wore one that was more obvious. Then when she knew she needed to go undercover as a teacher, she had a more realistic one implanted so she could be a Wolf in Sheep's Clothing.

Of the 3 suspects, Wakasa, Kuroda, and Wakita, Wakasa is the one most likely to wear a prosthetic, because Kuroda wears a darkened lens over his blind eye to conceal it, and Wakita wears a patch over his. This would be unnecessary if they had prosthetic eyes.

    Identity of Ano Kata (leader of Black Org) 

Agasa is the Boss of the Black Organisation
Think about it. He seems unusually knowledgeable in the first few chapters about what the Black Org will do to Shinichi when they find him, and steers him towards a more harmless avenue than he might have taken on his own - namely, working behind the cover of Mouri as opposed to tracking the BO down outright.Also, he appears to be a kooky inventor. How the heck does he fund all this stuff? Shinichi himself says that half the time his 'inventions' don't work (although that can be taken with a grain of salt, seeing all the spectacular gadgets he's put together for Shinichi, and the time he was comissioned to put together a bomb to blow an abandoned building up for the government).
  • Volume 12: Agasa was able to sell his voice-changer tech to Bandai.
  • Ano Kata's phone number sounds like the song "Seven Children." Agasa's pretty friendly with kids: Conan, Ai, Ayumi, Mitsuhiko, and Genta make five. Then could Shinichi and Ran make seven? In flashbacks Agasa has been seen spending more time with Shinichi and Ran than their own parents do, driving them around on cases and taking them on trips, just as he does for the Detective Boys now.
  • The Last Wizard of the Century, anyone? When Conan asks him to look up a sniper that shoots people in the right eye, he says, " Don't ask me how I'm doing it, but I'm on a top-secret data base looking up the person." If he was The Boss of a big bad organization, he would definitely have access to data bases, if the Black Organization doesn't already have one.
  • A recent 2013 interview has the author rejecting Agasa as the boss. In fact Agasa is the only known person that Gosho has ever rejected.
  • Agasa being the boss behind it, was a fairly popular urban legend about anime/manga in Japan. There are urban legend sites in Japanese that talk about this theory. However, some of those sites have speculated that the author may deliberately joss it due to the fact that the theory is well-known among some Japanese fans. And indeed, he did seem to joss the idea.
  • A lot of Conan is based on Sherlock Holmes. Beika comes to mind, which is based on Baker Street. So who was Sherlock Holmes' arch nemesis. PROFESSOR Moriarty.

Kogoro is the Boss of the Black Organisation. Also, he knows that Conan is Shinichi.

Ran is the Boss of the Black Organisation. Also, she is a man in disguise.
And then she brainwashed Conan after the 'taking a bath together' incident.

David Xanatos from Gargoyles is the leader of the Black Organization.
In fact he purposely shrunk Shinichi as phase 12 of his convoluted 47 part plan.

Subaru isn't just Bourbon; he's Ano Kata
During the Pisco sequence, Shinichi correctly realized that the 4869 part of APTX-4869 was a reference to Sherlock Holmes. As Shiho noted, that's pretty odd for a group whose members are typically goons like Vodka and Tequila. Now, let's see...a fan of Sherlock Holmes who sets off Shiho's Black Organization awareness sense...The potential's there. This is also a great mask for him; who'd expect a new hire is actually the boss?
  • I kinda thought Subaru was Akai Shuichi in disguise. Why else would Conan let him into his house so readily? And Conan definitely knew something was up about Shuichi's 'death.' I don't believe he actually died.
    • Subaru being Anokata, at least, has been Jossed—retroactively. In a 2006 interview, Aoyama revealed that Anokata's name had appeared in the manga. Subaru didn't appear until 2008.
      • And recently it has been strongly implied (if not proven) that Sabaru is in fact a not-dead Akai Shuuichi in disguise. Sabaru had always kept his eyes squinted . . . until the end of the latest Black Org arc [File 824], which involved a blown-up train. See for yourself!

Ayumi is Anokata
Anokata is most likely Ayumi Chan, after taking APTX 4869. This theory is the most favored by experts. Some experts however still subscribe to the theory that it is either Yusaku Kudo Kun or Agasa Sensei, but they are in the minority due to recent evidence in Ayumi Sama's favor. This is in contrast to the utterly ridiculous fan theories that Vodka or Gin might be Anokata, or that an as yet unrevealed character might fill that role, ludicrous as that may sound. Popular fringe theories include Jodie Starling, Akai Shuichi, and Haibara Ai; although these theories aren't as outright insane as the theory that Anokata simply hasn't been introduced yet, there simply isn't as much evidence for them as the Ayumi or Agasa theories.
  • Theories that either Kazuha Chan or one of the Detective Boys (other than Ayumi Chan, for which there is of course ample evidence) are also quite popular, but experts hold that they have in fact been disproven. Some disagree and acuse the experts of hiding evidence. These people also tend to fall into the utterly ridiculous camp of people that believe that Kazuha loves Heiji and Ran loves Shinichi, rather than the much more logical and reasonable Kazuha/Ran and Heiji/Shinichi theories.

Vermouth is Ano Kata
It's in the name. Vermouth's real name (or so it seems) is Sharon Vineyard. Vineyards are where grapes are grown and grapes are used to make wine, which fits with the naming scheme of the BO. She pretends to just be the Boss's favorite though because she's worried that otherwise one of her underlings would try and assassinate her and take her place. She gave Conan the Boss's phone number on purpose because she's hoping he'll follow through and lead her to everyone all at once, which is also why she doesn't rat him out. She was disguised as that serial killer in New York to feel out how big of a threat the FBI could be, and killed Jodi's father personally because he was just that good. And how she's currently staying young is running out, so she's looking for a new source of immortality, hence the BO's seeming focus on immortality.
  • Of course, there's the problem of the text she receives from the Boss warning her that she's taking her leeway too far. Then again, this could have been part of a masquerade to make Shinichi think she was just an employee if he woke up early. The Vineyard name meaning still works, though, if Vermouth is the Boss's sister, cousin, or wife (i.e. both Vermouth and the Boss carry the Vineyard name).

James Black is Ano Kata.
The org's name literally is The Black Organization, named after its leader.
  • But TBO is only the name Conan gave them to call them something, it's not the group's real name.

Michio Yuki from MW is Ano Kata.
Purposely, he makes the use of the APTX-4869 as his tool for humanity to end with him.

Fusae Campbell (the woman Professor Agasa loved) is Ano Kata.
As she leaves, a man in a black suit calls her boss, and he does it in rather shady way.

Big boss will pretend to be someone close to Conan.
S/he won't be the real person themselves, but done a really good job impersonating them.It can be anyone: Kudo's father, Professor Agasa, Kogoro, or maybe even one of the children...
  • As stated above, an interview confirmed Agasa being the boss is jossed; josses Yusaku Kudo (Shinichi Kudo's father) as the boss as well, and here josses any of the Detective Boys (and Sonoko). The only one who is still a suspect is Kogoro.

Heiji is actually Ano Kata.
All of this is actually a really elaborate prank to give Shinichi a mystery he can't solve and to somehow prove that he's the better detective. He keeps calling him "Kudo" in front of Ran and everybody else so that he can expose him. Somewhere along the line the plan got really convoluted though, and now he's not really sure how to break the news.

Ano Kata is Conan's home room teacher, who is using a fake name.
Sumiko Kobayashi, Conan's home room teacher, is named after Yoshio Kobayashi, who was leader of the Boy Detectives Club in Edogawa Rampo's Kogoro Akechi books. The twist will be that while Ran has been chasing Shinichi, who has been hiding under a fake name inspired by Edogawa Rampo, Shinichi has also been chasing after Ano Kata, who will be revealed to have been doing the same, using a fake name inspired by Edogawa Rampo.

Ano Kata is Gosho Aoyama
Aoyama's name has appeared in the Manga from the very beginning and Aoyama has an obvious interest in detectives and mysteries.

Ano Kata is the most interesting man in the world.
His code name is Dos Equis.

Ano Kata is either Kaito's mom or dad
note Chikage if Toichi is actually dead, but it could be Toichi if he is Faking the Dead. Either he had to fake his death to protect his family from the Magic Kaito organization, or he was actually killed and Chikage has turned turned into a MUCH worse criminal as a result. Chikage and Toichi's surname means "black feather" and the Black Organization has been compared to crows; they got the idea for their organization's nickname from the Kuroba name (perhaps the official organization name involves the Kuroba name itself?), or, if "Kuroba Toichi" is an alias, Toichi took the name from the organization's nickname. "Chikage"'s name (a thousand shadows) may also weigh in her favor for being the leader. More things in her favor for this theory is that she is canonically, you know, alive and that she seemed to dress in black during her thief days.

Vermouth is "the boss's favorite" and allowed to get away with so much (especially in protecting Shinichi) because she was Toichi's student and was hand-picked for the Black Organization for this reason; Yukiko, affiliated with detective- and law-minded types as she was, was not. If Chikage is Ano Kata, she wants to find a way to resurrect Toichi, and the hints that the BO's true goal is to raise the dead are all true, possibly justifying their murders in their own minds if they plan to bring them back. If Toichi is Ano Kata, he is competing with the organization in Magic Kaito, whose threats against him and his family forced him to fake his death and whose attempts to find immortality he is attempting to foil with a perfected version of APTX 4869; not by relying on "magic jewels" like they do, but with science. Unless he plans for this "immortality" to backfire on the rival organization in some horrible way, then the Black Organization's goal probably remains the same.

Whether it's Chikage or Toichi, though, prepare for some absolutely MASSIVE pedestal breaking when the rest of the Kuroba family finds out.

  • Toichi is not the Boss, as confirmed by this interview; Chikage is a suspect.
  • Or, maybe Toichi is secretly one of the identities Karasuma Renya assumed after he presumably faked his death 50 years ago. For a character associated with doves, it's pretty strange for the family's last name to be "Black Feather" and for somebody to set up a crow-themed Kaitou using Toichi's identity. Especially since Aoyama has gone out of his way to only use crow symbolism to foreshadow connections with the Black Org. Why persistently align the Kurobas with the color black and crows, when Kid wears white and is associated with doves? We do know, however, that Karasuma was super into crows; he used it as his symbol and themed his organization after them. Considering his symbol matches his name, it's believable he might do the same with one of the identities he assumed. And we do know Toichi was seeking a source of immortality just like the Organization seems to be. In which case, Toichi not being the boss could be a mere "from a certain perspective" kind of thing, because "Karasuma Renya" is the true identity of the Boss, not "Kuroba Toichi." Of course, this theory could be made or broke by the circumstances surrounding the Sunset Mansion Massacre and how Karasuma has managed to live for over 150 years, two events which seem to be intimately related to the creation of the Black Org itself.

Anokata is more than one person
Or, to be more precise, there is more than one person had been acting as 'The Boss'.Nearly nobody knows who the boss is, so it would be easy to someone who indeed know the boss, replaced him if he was 'away'.This WMG proposed that the original boss, the one who 'created' the Black Organization is not the same person who was 'leading' them now.

Ano Kata is Yamamura
It's always the ones you least expect.

    APTX-4869, de-aging, antidote 
Gin actually slightly changed the recipe of the drug.
My guess would just be something like sugar, or something else of no consequence. It was put there in case Haibara (A.K.A Sherry) escaped and tried to create an antidote. And I realize there are a lot of things wrong with that, but it's WMG. Just roll with it.

APTX-4869 halts aging.
The regression effect of the drug not only reverses the aging process but until cured effectively halts it as well. Those who experience effects don't grow at all. Comic-Book Time has prevented this from becoming noticeable but eventually there will be a story arc where one or more Detective Boys have growth spurts and leave Conan and Haibara in the dust.
  • This is the only theory that makes sense, since otherwise after taking the pill to return to his normal age, Shinichi would not regress to Conan again unless the substance was still present and active in his blood. Thus it would mean that the drug, still active in the body, is effectively halting any aging the two kids may want to do.
This also opens up the possibility that…

Vermouth has taken APTX-4869
  • Because she was much older than Shinichi & Haibara, it didn't de-age her into childhood, merely young-to-mid adulthood (enough she could impersonate her own daughter). Why she did it and why the Black Organization doesn't know about the regression effect are harder to say. It could be that, like Haibara, Vermouth was attempting suicide and lucked out, and either her looks didn't change drastically enough to set off alarm bells, or they all attribute Vermouth's younger appearance to her disguise talents and narcissism. The possibility Vermouth has taken the drug also leads me to think...

There is a specific trigger to APTX-4869's regression effect
  • The two confirmed shrink-ees and one possible all possess one thing in common: They are highly intelligent and near-or-outright masters in their chosen fields. This leads me to believe that the regression effect of APTX-4869 is not a Million-to-One Chance, but has a specific trigger, most likely some genetic trait or something else DNA-based that also creates high level intellect in those who possess it. If someone with this trait takes the drug, they won't die. Of course, this leads to yet another possibility...

APTX-4869, or at least one of its predecessors, was crafted specifically to benefit Vermouth
  • Getting just enough apoptosis out of the body to reverse some aging without getting yourself killed probably depends on the agent being very picky about what genetic material and/or cells it does and does not go after. If the agent was designed to specifically keep Vermouth alive, it's a fair bet that it wouldn't be so pleasant to anyone without some of her own genetic material. Of course, that leads to... Shinichi and Shiho are blood relations of Vermouth's to some degree (see below.)

Vermouth did not de-age with APTX but with Pandora
Alternately, instead of having de-aged with the drug, it could be argued as mentioned above that the BO had once been in possession of the stone Pandora - that cries tears of immortality - and that Kaito's father was seeking / hid away in order to keep it from them, and Vermouth was one of the few privilaged who took the serum. Once they lost the stone, scientists like Miyano and his family were brought in to try to recreate the serum. Research included Shiho going to the Mermaid island to check out all immortality rumours.

This would also tie in to Kid's Organisation being the same as Shinichi's above, and would mean that they could ultimately be forced to join ranks.

  • Which, may I say, would be made of awesome.
    • No, awesome would be made of that.

APTX-4869 was derived from the same stone that the Arrows from JoJo's Bizarre Adventure were made from
Great boon if you can handle the effect, near-instant death if not...does this ever sound familiar. Although this troper wouldn't be surprised if the reason Shinichi keeps running into murder and theft cases is because a semi-dormant Stand keeps steering him towards loci of rancor and envy...

Ai has already figured out the antidote to APTX-4869, and is withholding it from Shinichi.
Or she will have in the future, and then keep it from him until the (eventual) end of the series. She could be doing this for two reasons: 1) Because she knows that if Conan finds out that he can be Shinichi again full-time, he would rush to take it and blow their cover, or 2) Because she's in love with Shinichi/Conan and doesn't want him to be with Ran. My guess is that she's telling herself it's the first reason, but there's more of the second reason in there than she'd like to admit.
  • Would also go nicely with the theory that Ai is Ano Kata (see above)...

APTX-4869 is a 'failed' eternal youth serum.
I think it's been confirmed that the Black Org is searching for the recipe for immortality. That's probably what Ai Haibara and any other Black Org scientists were researching. And it seems clear that Vermouth found a de-aging substance somewhere along the lines. So, what if APTX was an attempt at an eternal youth serum, but instead the Black Org realized that it killed people without leaving a trace of how they died? So they started using it as a poison, not realizing that they had come closer to an eternal youth serum than they previously realized: in extremely rare cases (such as with Shinichi and Ai) it actually does de-age the recipient by about 10 years. This would explain both how the Black Org came across such a poison, why the poison did what it did to Shinichi, and why the Black Org believes Shinichi to be dead.

APTX-4869 was specifically aimed at Shinichi
Not exactly much in the way of direct evidence, but there's the possibility that while Shinichi was watching Vodka's deal, Gin (offscreen) was receiving a message from the Boss permitting him to field-test the apoptoxin in case he had to bump someone off. In this case, it would be a direct response of the Boss seeing Shinichi witnessing Vodka's transaction, and intending Shinichi specifically to be Apoptoxin Guinea Pig #1. The problem is that this implies that the Boss has been shadowing Shinichi, and planning to have Gin and Vodka (or anybody else they could entrust with the apoptoxin) administer it when Shinichi inevitably notices some sort of Black Organization wrongdoing (read: pretext for administration). As for why the Boss would think to aim at Shinichi in the first place...Well, I am the one who placed the WMGs about Shinichi and Shiho possibly being related to Vermouth and/or the Boss...

4869 being the series' Arc Number literally saved Shinichi's life
4869, the Goroawase Number for "Sherlock," appears all over the DC storyline. It's been used frequently as a password for various devices and as code numbers and even, in the anime, as Gin's license plate (before that was retconned). It's associated with both Kudou Shinichi and the Black Org through their experimental drug, the infamous Apoptoxin, and specifically the most recent batch, which had the 4869 serial numbers. This reading of 4869 as "Sherlock" is what got the drug subsequently dubbed "the Experimental Detective." As we know, in a twist of irony, their first human test subject for the 4869 batch was Kudou Shinichi. But while it was a coincidence for Kudou Shinichi to encounter Gin that day, it was not a coincidence that he became the first human test subject.

Consider: Gin knocked out Shinichi and planned to kill him to silence him, but as he pointed out to his partner, Vodka, there were cops everywhere. Gin needed a quiet, certain, efficient way to kill Shinichi and enable him and Vodka to slip away before his death was discovered. Apoptoxin 4869 does offer a benefit like no other: so far, modern forensics cannot detect its presence in the body, meaning there would be less evidence left behind. However, Apoptoxin 4869 still does not make sense as the choice poison in this situation, especially not by someone as careful as Gin. Gin directly states that APTX 4869 is experimental, and that it hasn't been tried on a human before, so the result of drugging Kudou Shinichi couldn't be certain, and even then, to observe the full effect would require time Gin didn't have. What Gin needed more than a lack of evidence was a poison that would kill Shinichi quickly and quietly, to ensure his death while allowing them time to escape. Poisons like that already exist, and likely Gin had them on him despite his favoring of the gun—and if not Gin then surely Vodka, considering he and Gin encounter a variety of situations which require gruesome efficiency. And in the case of emergencies, easy-to-access poisons and suicide and last resort pills are more than likely to be carried on operatives of such a shady organization, so they almost certainly had other options.

Why APTX 4869? Well, besides efficient, there is one trait Gin has that has gotten in the way of this efficiency before: he's a psychopath with a quiet, but very dark sense of amusement who genuinely enjoys watching others suffer. Others' lives are meaningless to the point of him not even remembering those he's killed, but he hyperfocuses on deaths he thinks can bring him amusement, satisfaction, or pleasure. Gin likely couldn't resist the irony of experimenting with "The Experimental Detective" on a detective—a darkly humorous twist that becomes doubly ironic when considering the results of his "experiment." Because of this, Gin falls to Bond Villain Stupidity by setting up the circumstances of the death but not staying to ensure Shinichi actually died—and because Shinichi ends up surviving the inconsistently lethal drug and Gin left before the drug even took affect, Shinichi survived the encounter, leaving a witness with enough skill to influence law enforcement alive and aware of Gin's organization's existence.

There is no permanent antidote. Instead, Ran will de-age to be with Shinichi.
There is no antidote and there never will be. All growth to one's normal age will only ever be temporary. So eventually, Ran will have to take the APTX to de-age as well, be the same age as Shinichi and they'll grow up and old again. (That's still asuming she'll find out within the next 600 chapters or so...)
  • And they'll ride into the sunset on Conan's skateboard.

The 'Special Gene' required to survive APTX-4869 is an above-average intelligence.
Think about it. 4869 can be read as 'shi', 'ha', 'ro', ku', if you read only the first syllable. Run it together and you get 'Sherlock'. Shinichi and Shiho both have high levels of intelligence, in other words, they are 'Sherlock's.

Gin was tested with an early APTX-4869 protoype
This happened around the same time or even before Vermouth took the drug. This might explain his odd hair colour and the two's odd relationship.

The list of people who were given APTX 4869...
is ordered first after WHO gave it to them and THEN in chronological order.This would explain why Haneda Kohji's name was two positions under Shinichi's in the list, despite dying 17 year before Shinichi was poisoned. Rum's victims were listed right after Gin's; considering, Shinichi was one of the last people to get on the list before Ai saw it, this would also mean, that Haneda Kohji was one of the first people poisoned by Rum this way.
  • It's also possible they're ordered by experimental batch. I can't imagine every version of APTX was called "4869." 4869 is most likely the serial number of the most recent version of the drug, which we know has existed for some time in various forms and thus had to have a way to differentiate between the different "batches." The list may not actually be exclusive to 4869 victims—since 4869 is the version Haibara created, and if the number refers specifically to that version, 4869 is too recent a creation for the older victims to have died from it, especially since Shinichi is stated by Gin to be the first human test subject for APTX 4869. Instead, the list may contain victims and test subjects from every version of the drug. The idea that APTX 4869 (nicknamed "the experimental detective" because of the Sherlock pun) and the older versions of APTX are not called the same thing may tie into the mystery behind what Haibara's mother called "The Silver Bullet." Possibly that was the nickname referring to an earlier APTX. This is slightly more a shot in the dark, but maybe this Silver Bullet version had a similarly punny number, perhaps APTX 4681, which is similar to the Japanaese pronunciation of Silver Bullet (Shi-Ru-Ba Wan, a pun on "Silver Dan," with Dan being a word for bullet). Or perhaps it was APTX 468, "Silver," and the "bullet" nickname came from the drug's form, a pill.

APTX 4869 is derived from Mermaid's Flesh
Mermaid flesh, as stated in Japanese myth (and reiterated in Rumiko Takahashi's Mermaid Saga ) has the capability to either kill you, or make you immortal. Sound familiar?

The intention of the Black Org's experimental APTX production has been to reverse aging all along
Just not to the extremely juvenile state it reduced Shinichi, Haibara, and Sera's mom to. Pisco, after all, implied that Haibara's juvenile state was a big step in the right direction for the goal of the APTX project. If the boss of the Black Org genuinely is Karasuma Renya, the same 149 year old man who caused the Sunset Mansion massacre, and not some successor, then Karasuma must be extremely old. And if he hasn't found some other solution to all of the health issues that come with extreme age—and given his funding for the apoptoxin experiments, the answer is 'probably not'—then he is likely suffering from Age Without Youth. Either way, it's reasonable to assume that such longevity is related to Karasuma's reasons for faking his death at the age of 99 fifty years ago, which coincides with the beginning of the APTX project. As Karasuma faked his death, restoring his health by restoring his youth would arguably fit the description of "raising the dead," a phrase both Vermouth and Haibara have used to describe the Black Org's objective—Vermouth to describe the purpose of the Organization itself, and Haibara to specifically describe the purpose of APTX 4869 itself. Both were said with a hint of jest and abstraction, implying a kind of "from a certain perspective" logic, which fits with this interpretation.

    How there are so many cases 

Conan is followed by a sympathetic Shinigami that provides new cases.
The only murders that are real are ones like the Driven to Suicide ones and the Black Organization Cases. Seeing as how Japan's Real Life murder rate is nearly nil...
  • So it's only a coincidence that everyone they run into has a crappy relationship with their friends or family?
    • Yes, dysfunction is everywhere.
  • Conan manipulated the families into those situations, always picking one person towards whom all the evidence will point, so that Mr. Moore would have a case to "solve". He might have even hypnotized the sucker so that they would believe themselves to be guilty.

A Shinigami notices Shinichi's knack for always discovering the truth, but also notices that he's going to die at age sixteen.
In exchange for saving his life (i.e. making sure he struck gold on the low survival rate of APTX), the Shinigami directs future murders towards him all the time, getting rid of possible vengeful spirits.

Mouri knows where murders are going to take place ahead of time and secretly directs his family to be in the right place and time
Mouri is actually a member of a internet forum or bulletin board network where murderer's announce their intention to commit crimes ahead of time and challenge people to catch them. Clues to this theory are Mouri's admitted use of bulletin boards in his youth, his computer on his desk in the present that he never uses when anyone else is in the room, his wide range of old freinds that he spontaneously decides to visit just before their murdered or murder someone and his love of publicity and media coverage. Inspector Megure is actually far more intelligent than he appears and is secretly investigating Mouri's participation, he will often let slip his suspicion when he first sees Mouri at a crime scene he has no logical reason for being at.

The actual timeline.
While I've only read less than half of the series, a personal theory I've had regarding the progression of time is this: Only about half of the total chapters are true canon. To elaborate, several mysteries are often not referenced again, unless it somehow tied into the main plot or events directly continued from the previous chapter. While I wouldn't know if multiple seasons have passed in main plot related chapters, my guess is that most of the "mysteries" are just filler because the creator probably didn't want to rush to the end or drag out a single mystery too long (the Black Organization/Kudo's return to normal body, notwithstanding). Some mysteries (like the ones relating to Ran/Rachel occasionally getting suspicious of Conan) are meant to happen, as we know that Conan's mission is to get Richard/Kogoro's fame up so he'll attract major cases. It's not a strong theory, but it might help sweep away from confusion.
  • Related theory: The "filler" cases are dreams - Conan/Shinichi is certainly big enough of a mystery geek. Or perhaps they're part of a manga that Dr. Agasa works on in his spare time...?
    • Alternatively, they're part of a novel Shinichi's father works on, inspired by his son's fate.
  • Certainly an interesting theory with the dreams. As I said, I don't know how many "seasons" (and I mean the weather seasons) have "passed" but it would more or less explain how nearly 1000 murders/mysteries have occurred and been solved. Only the ones that are extensively mentioned later on/have ties to the Black Organization are actually from the timeline, while everything else is simply filler/dream/what-if scenarios meant to flesh things out (kinda like how you can ignore roughly half or more of Cowboy Bebop).
    • It could be that there are multiple timelines. The continuity-important cases are true across all timelines, while the filler cases happen in one/some but not in others, and are distributed evenly so each timeline is roughly the same length.

The reason they keep stumbling into mysteries is simple. Conan distracts people with Adorably Precocious Child antics, Ran kills someone with her karate, while Mouri "solves" the case, pinning the blame on some shady person and using his reputation to make it stick
This explains everything.

Kudo (and maybe Mouri) has something (a curse? Some quirk of genetics?) that causes anyone subconsciously thinking of murdering to act on it. That's why there's always a murder when they go out, even though the crime rate in Japan is supposed to be low
That is all.
  • The only problem is that a lot of these murders require a lot of planning in advance. They can't all be spontaneous.
  • The curse is actually my headcannon. We see Shinichi and Ran after all in one episode of Inuyasha, so some demon cursing them? Not that far off.

Richard Moore is on a mission from God.
He does kind of admit it in The Last Wizard of the Century. And, God wants him to solve all the cases. That's why he goes to crime scenes. it's his duty.

Alternatively to the above: Conan & Mouri don't attract murders. Murders attract them
They have some sixth sense about when and where murders will take place, and are subconsciously led to where they will occur so they'll be able to solve the crime. On the other hand:
  • Since so many of these murders are acts of revenge for a prior death, the spirits of those original victims reach out to people who can potentially prevent their loved ones from committing murder or, failing that, exposing them and making them try to repent.

Detective Conan chronicles every murder committed in Japan.
Japan really does have a low crime rate; Conan just happens to be involved in solving EVERY murder case in the country.

Giygas is the reason for the ridiculous numbers of murders in the DC universe.
Let's face it, the number of murders in the series is ridiculous. Ignoring the kidnappings and the one instance of suicide, there have been over 600 in roughly the span of a year (since Conan hasn't aged much). And murders aside, the people in the cases aren't the nicest of people. They're usually mean, spiteful, and lashing at people who are supposed friends.

Think about what Buzz Buzz told Ness back in EarthBound. Buzz Buzz said, and I quote, "From now on, you'll be fighting enemies sent by Giygas, as well as humans who have evil thoughts. They'll definitely make trouble during your adventure. Animals are also becoming violent due to Giygas' influence over the evil in their minds! It is the truth, so listen!" To summarize, Giygas' influence takes the evil in the minds of animals and humans and amplifies it.

So what if that influenced human was on the short end of the stick? What if, say, they were cheated on by a lover or were lied to and used by a supposed friend? Suppose they thought briefly of murdering that person in their anger and, after thinking it over a bit, started to embrace the thought and plan it out...

So somehow, Giygas survives the battle with Ness and flees across space and time to the DC universe. Which is good news for Conan/Shinichi, since he wants to be a famous detective.

Vermouth's youth, her relations to Ano Kata, the workings of APX-4869 and why she keeps Haibara and Conan's shrinkage a secret.

Ok, so this is a very broad theory.

We know the following:

  • Vermouth is the favourite of Ano Kata.
  • Vermouth must be way older than she seems.
  • Even accounting being a favourite, she have some other connection to Ano kata, according to bourbon.
  • She know about Conan/Shinichi and Ai/Shiho, but is not telling BO, and seems to want to destroy BO by this.
  • The goal of BO is to raise the dead, by vermouths own words.

Well, why?

The simple reason is: Vermouth is immortal/de-aged. But not by APX-4869!

Imagine this. For some reason, Vermouth suddenly de-ages. Ano Kata or someone else sees her potential, or might even be greedy to get de-aged themselves.

The Miyano couple is hired to create a faux elixir from Vermouths blood or DNA. (Vermouth did not like the Miyanos and their work, remember?)Sadly, they fails miserably over and over again, killing several test objects in the process. (Could this be why they where terminated from BO?/ why they tried to escape?)However, Ano kata does not want to throw this result away, and gets Sherry to re-purpose the work of her parents, still using Vermouth.

Some part of the new ingredients added by sherry makes the de-ageing possible, now as an unwanted side-effect instead of its full purpose.

So, Vermouth is the favorite of Ano Kata? Of course, she is! She is the most valuable resource they have!

Why would vermouth not tell the organization about Conan/Haibara? Part sympathy, because the three of them are now the same. Perhaps greed, not wanting to share her age-less with more people. Maybe as a revenge, for the suffering the Ano Kata and Miyanos put her through in the name of science.

So what was Bourbon referring to? well, it could be vermouth being Ano Kata's lab rat, but of course, there could be something else behind it. Ano kata might just be someone she cares about (such as a child or a lover), and she might not want Ano Kata to achieve his goals due to her knowing the pain of seeing the world flying past her?

Bonus, For the pleasure of epileptic trees: Maybe the last person who had the Pandora from Kaitou kid's universe was Vermouth?

Shinichi actually died from the poison and Conan is just pretending to be a great detective.
Doctor Agasa is insane and his inventions only work in the minds of the detective boys. Mouri Kogouro is actually a great detective and actually solves all his cases. Conan is just a relative of Shinichi's who Kogouro adopted and who likes to pretend he's the one really solving the cases, and Kogouro plays along. Hattori is just plain stupid and actually believes that Conan is Shinichi. Ai is also just playing make believe with Conan. Ran has selective amnesia and doesn't remember that Shinichi died.
  • So how does Conan have all of Shinichi's personal memories and knowledge?

Conan's poison darts change a little each time.
There is no way that watch has so many, so he has to get refills from Dr. Agasa. Because he is worried about the effects of it in the long-term, like whether it might kill someone or stop being effective, he changes the sleeping recipe slightly each time Shinichi shows up for a refill.

  • This would explain why Gin wasn't very affected during the time Haibara drank Paikaru - It happened to be an unusually ineffective batch.

Shinichi and Heiji are not Meitantei
Or, at the very least, aren't as good as they'd like to say.

This is a simple idea. The only person who had heard of Shinichi from the Kansai area is Heiji, and Shinichi had never heard of Heiji before he showed up. If Shinichi (who is considered the better of the two) is the savior of the Japanese police force and known to be such, then why aren't other areas and countries attempting to get him to solve their cases? Thus, they are just two high school students who solved some cases and got inflated egos.

This also can relate to what Kazuha is thinking when she first sees Shinichi. She thinks, So this guy really exists? Please note that she is best friends with a detective who has knowledge of Kudo, and has mentioned him repeatedly. But since she never heard of him, besides (assuming) after Volume 13 of the manga, Shinichi has an inflated ego.

  • Shinichi does have an inflated ego but he does show the ability of a good meitantei. Shinichi has been called to other areas in the past too - movie 1, that manga case with the village that hates him - it's their lack of concern towards that pesky thing called school that is a concern. (Though Shinichi at least has an excuse during the main time period.)
  • This may have been discounted in a recent chapter where the culprit or an attempted murder held a grudge against Shinichi, and subsequently had collected an impressive number of newspaper articles with said detective's solved cases enough to cover an entire wall.
    • Well, do you know any real life detective? Even if there is actually a genius detective like Shinichi in real life, no one would have a clue about him. This career doesn't have a large popularity, so it's understandable that only people in legal and crime force will know about Shinichi and Hattori.

Shinichi has a drinking/drug problem
Deconstructing on the above, Shinichi tried to be a great detective and failed, this depression led him to drinking/drug usage.
  • He drank so much it resulted in brain damage changing him into "a childlike state"
    • When things get really bad (getting a cold) Drinking/Drugs is his only way of feeling better (being Jimmy) He longs for it to work when he is not this way too and has attempted bt nothing can bring him out of his depression.

The Black Organization are Freemasons, the Illuminati, Skull and Bones Society, the Knight Templar, and/or Lizard People.
Why do you think they can achieve such secrecy? They have control over the banks, the politicians, and the media without no one knowing it. For all we know, Obama, Bush, Gates, Rockefeller, and Jay-Z are all part of the Black Organization. Only Conan can stop the New World Order.
  • The Black Organization are actually Patrio. . . La-li-lu-le-lo.
  • The Black Organization is a faction of the Soldats, Ran Mouri is a potential Noir.
  • The Black Organization is backed by Seele, everything in Detective Conan is moving toward the Second Impact.
    • The mysterious Boss of the Black Organization is Seele 05

The Movie 5 is a warning about the Illuminati doing 9/11
In that movie, the Black Organization (the illuminati) destroys the "Twin Tower" building. The public thinks an old man living a secluded life near a mountainside , who murdered several people,(a.k.a. Osama Bin Laden) is responsible for the destruction of the twin towers. Because of this, a large part of the population does not realize that the real people responsible for the terrorist attack are a black organization lurking in the shadows.

Before the attack, agents of the black organization could freely enter the twin towers and rig the site. Just like in real life, before )9/11, there were suspicious works done on the 2 buildings.

And in the end, it is even directly pointed out that most people will not realize who really destroyed the twin towers.

Teru Mikami is an alternate universe version of Eri Kisaki.
Besides the whole gender thing, they're very similar. They both wear glasses, are extremely successful lawyers, the main protagonist knows not to mess with them, they both have long hair, etc. But Teru is insane, while Eri is not.

One of the kami is answering a prayer Conan made when he was very young.
He wanted to become the world's greatest detective. This kami therefore steers Conan in the direction of imminent murders (because practice makes perfect), and intervened to let Conan and also Ai defy the odds and survive the rejuvenation process.

Japan's economic crash in the early 90s was caused by so many millionaires dying in a short period of time.

Not only is the Black Organization (or at least Gin) fully aware that Shinichi is still alive, but they probably never actually wanted to kill him.
Think about it. We know Gin is a professional killer. We know he usually doesn't make mistakes when he is killing people. But when, in the first episode, he gives Shinichi the poison that turns him back into a child, Gin is acting completely amateurish. Instead of making sure that Shinichi really is dead, Gin and Vodka just poison him with a previously untested drug and run away. That is just too unprofessional for them - except if Gin never actually wanted to kill Shinichi.
  • This is handwaved as Gin and Vodka having just cleared themselves of being murder suspects earlier, and they were in a hurry to leave. Plus the drug does have a ridiculously high fatality rate. They didn't count on Shinichi having Plot Armor.
    • While I like this theory, Gin and Vodka aren't aware of any million to one chances, as far as I can tell Haibara is the only one aware of the secondary effect, everyone else just thinks its a poison. Gin might know better though, since he is high up in the organization (at least it appears that way) and obviously the drug was developed for other purposes than just poison. It's also possible that Agasa, the true head of the Black Organization (see below) told him about it.
  • It seemed to me that the Black Org never actually wanted Shinichi dead; he just stumbled on a case and they gave him a poison which had a 1 in a million chance of de-aging someone instead of killing them. So Gin actually does believe Shinichi to be dead.

Haibara is either a deliberate Captain Ersatz of Dana Scully or is an Alternate Universe version.
Think. They both have similar appearances (short, auburn hair; Scully is much older, while Haibara has been de-aged, though), they are both scientists, they both use sarcasm to deflate a co-worker's insane ideas, Haibara was affected by APTX, whereas Scully was infected with the Black Oil Virus or whatever (need to check), their co-worker is obsessed with something that ends up being involved with their work, then there's the Shipping... There are so many similarities, I'm waiting for the Black Oil virus to show up in Detective Conan and there being an alien invasion.

Conan & the Kaito Kid are related.
This is a fairly old one, to judge by the amount of fanfics based on it. Even laying aside the art style, Shinichi Kudo & Kuroba Kaito (and their respective parents, who are basically them with moustaches) are basically identical - even to the point of Shinichi's not-girlfriend Ran mistaking Kaito for Shinichi in the street. In addition, whenever the two butt heads with one another, much is made about how closely matched they are.The theory normally runs along the lines of the magician Toichi Kuroba (secretly the first Kaito Kid) introducing Yukiko Kudo (as she is known by the time of the series) to his brother (and occasional sparring partner) Yuusaku Kuroba, who legally takes up his pen-name of 'Kudo' after his brother's hounding (and eventual death) at the hands of a mysterious mafia-like organisation.

The Black Organization and the mysterious group chasing Kaito Kid are the same people.
Considering that Pandora's Jewel (from "Magic Kaito") sheds 'tears' every time a certain comet passes the Earth that grant the drinker immortality, and the fact that Vermouth doesn't age, I think it's fairly likely that if the Black Organization is the same as the group from Magic Kaito, the reason they need money and a large syndicate is to steal as many gems as they can to find the true Pandora's Jewel. Also, it may be possible that either a) the BO's leader is already immortal, and that's why his phone number is a child's song and is finding the Jewel for a lover, sickly child, trusted right-hand man, etc., b) is using Vermouth's knowledge of the gem to help track it down for him/herself, or c) Pandora's Jewel has another secret power we don't know about.
  • It seems clear that both groups are after immortality in some form.
  • Could be different branches. One does it scientifically and all the agents are named after alcohol. The other tracks the more occult means and the agents are named after animals.
  • They don't even have to be different branches, at least if you go solely by the manga, where the only named agent, Snake, wears a black coat and fedora. Ever hear of Snake Wine, or Snake Whiskey? Totally valid.

The reason why Snake Hasn't killed Kaito
Relates to the above WMG. If the two Organizations are one, then Snake's been violating the M.O by letting Kid live. But if he's using Kid to get Pandora, it makes sense. They tried to use Toichi, and he turned on them and started hunting Pandora for himself. Now Kaito has taken up his father's task, but with far less information. If Snake knows this, then it's easy to manipulate Kid. Let him know about Pandora, that his father was killed because of it, and you have a perfect puppet that you don't even have to control. Just show up and cause a ruckus once in a while to keep up his motivation, then dispose of it when you're done. Snake's a good shot, and smart too. A bit of exposure that can be tidied up or blamed on Kid, for immortality. Win win.

Shin'ichi is really dead and Conan is his replacement.
Conan's a copy of his six-year-old self sent into the future to fill in Shin'ichi's spot in the universe when he died unexpectedly. Similar circumstances exist for Haibara.
  • So why does Conan have all memories of Shinichi, as if they were his own?
    • Memory implant. He's supposed to be a full, if short, replacement, after all.

Shinichi is actually making the antidotes last longer than they should.
All of the antidotes were only supposed to last a short time, but because of Ran, he tells his body to make them continue. It's kind of like a placebo effect.

Kogoro is a millionaire.
In an early episode there is mention of a fee of 500,000 yen for Kogoro's detective service. There have been over 500 episodes. Assuming he gets paid his fee at lest 250 times throughout the series (many of the episodes are in two parts or don't involve Kogoro, so 250 is a conservative estimate) he should have made 250 x 500,000 Yen = 125,000,000 Yen. According to Google that equals 1.38875 million U.S. dollars. Now, since as far as I can tell (I haven't seen any recent episodes yet) he hasn't moved out of his apartment and spends all his money on beer, he can't possibly be lower than 1.3 million dollars at this point. This is exasperated by the fact that time doesn't seem to pass in Detective Conan.
  • That doesn't seem to be a set fee, though—Kogoro is seen to receive a piggy bank full of money in return for helping a child star), and Kogoro is seen to be VERY irresponsible with his money, blowing through a good chunk of a similarly sized fee in one of stories. Additionally, we don't know if Ran is attending a public or private school (private seems much more likely, given that her classmate Sonoko is from a wealthy family, and Shinichi also lives in a Big Fancy House) and we also are unaware of the circumstances of Kogoro's separation from his wife. She's probably not asking him for alimony, but one never knows.
    • Given the dynamics among the Mouris, chances are Eri gave money for "Ran's living," which of course include her tuition at Teitan.
    • Kogoro only gets paid when he's actually hired on a case; 90% of the time the murders are dropped onto his lap, via Shinichi's Doom Magnet.

Vermouth was in New York City in 1930 at the induction of Firo into the Martillo Family
...and she drank the booze that Isaac and Miria provided.
  • But she bleeds, and that blood ain't flowing back into her, disproving the "elixir" drinking. If she was a HOMUNCULUS however, and Ano Kata was the one who created her...
  • No, Better up! Vermouth IS Miria. Mirias personality is either an act or Miria has a split mind, and Vermouth being her second personality.

Kogoro KNOWS Conan is Shinichi
It's been established that for all his bumbling, Kogoro can be a very good detective under the right circumstances. In fact, it's been stated that he could even be as good as Conan when motivated properly. He's had who knows how long to notice all the clues to Conan's real identity, clues his daughter has also noticed at times. His motivation would be seeing how worried Ran is over Shinichi. In fact it's likely he noticed said clues even earlier than she did, but ignored them due to his characteristic laziness. But once they started piling up enough, he finally caught on. So why has he been so quiet about it? It's possible that he somehow caught on to the fact that Shinichi is hiding his true identity for a reason]] (again, he is much sharper than he often seems) and has just opted to keep mum about the situation. His hitting Conan on the head all the time for involving himself in the investigation is a form of revenge for all the times he's been put to sleep by the kid.
  • Perhaps he hits Conan on the head because no matter what, his pride cannot take that a little kid, whoever he really is, is stealing his shine.

When Ran confront Conan about his identity again, he will tell her that Shinichi is his older brother
Think about it. Both are detectives, both tend to stick their noses in other peoples deaths. And both have tendency to end up solving murders and all. They both smart, and know things that their not supposed to. So telling Ran that Conan and Shinichi are related is way easy to believe, than that Shinichi is drugged and de-aged.

Ran knew all along that Conan is Shinichi.
Well, Conan is just like Shinichi, and because of that, Ran has easily figured that out from the beginning. However, when she heard him saying that she's gonna be killed by the Black Organization if she found out, Ran has decided to follow this and pretends not to know that Conan is Shinichi until he gets a chance to tell her about it.

By the way, the occasions of Ran making Conan confess his secret and the latter tries to get the former to ignore the idea are just only a ruse for Conan not to know that Ran knew his secret all along.

Heiji is only pretending to be clueless about his feelings for Kazuha.
At first he was only pretending in order to annoy her and because he was embarrassed, but after he met Conan (especially the Desperate Revival and the arc where he and Kazuha were kidnapped) and seeing Conan's struggles, he started to truly realize how dangerous it was for a detective to be romantically involved and keeps up the act partly to keep Kazuha from getting even more involved with him and partly out of respect for Conan who can't be with Ran.

There will be 108 volumes of the manga.
Prepare for waiting for a long time.

The reason no one's aged in however-many episodes/chapters...
... is because a Time Lord did it. A Time Lord could have been just plain bored and decided to see what the long-term effects of a time-perception field could be. Thus we have six hundred-plus episodes really taking place over at least a decade. However, the Time Lord's time-perception field has its targets (in this case, Conan's town, country, or even the whole world!) not noticing that time is passing, while at the same time preventing their bodies from aging. Nevertheless, technology marches on - we get cell phones, etc. The time-perception field is just preventing people from noticing that something's afoot.
  • Alternately, it doesn't have to be a Time Lord. Any creature with command of space-time could be behind it.

Shinichi will have a Heroic BSoD momment when he comes across something that he can't explain...
Such as meeting Akako from Magic Kaito and discovering that her magic is real, or coming across an actual ghost.
  • Then he'll know how Battler feels.

Vermouth is Yukari Yakumo

When Gin hit the back of Shinichi's head on that fateful night, Shinichi actually just fell into a coma. And everything that ensued afterwards was All Just a Dream. That would explain everything.
Or up to the part of the pill. The pill didn't work on him but put him in comatose. So during all this time Shinichi is in a hospital for 19 years...

Ran is actually the last unicorn.
She transformed herself into a human to escape being shot and killed with her unicorn magic. But she couldn't get rid of her horn, so she wrapped her hair around it to hide it.

Sooner or later...
Aoyama's Mystery Library will feature an article on Batman. I mean, for Pete's sake, he's already resorted to doing one for Gregory House in a previous volume!

Chikage, Kaito's mother, is really Vermouth
She is nice to Shuuichi and Ran because they remind her of Kaito and Aoko. Kaito learned his magic tricks from his father and his disguises from his mother.
  • Unlikely because there is a scenes with Kaito's dad, Vermouth, and Yukiko. Vermouth looked nothing like Chikage in it.
  • Vermouth is a master of disguise, and if I remember correctly Chikage isn't home very often - her trips to Vegas are actually her leaving to do Black Org work. It would also explain why the snipers haven't actually killed Kaito yet and why Vermouth is working against the Black Org.

Officer Takagi knows that Conan isn't a kid
First big sign - He flat out ask Conan who Conan is back in the Tokyo Tower Bombing Case. Of course, Conan never responded to it.

Conan's Bad Luck
Conan's murder magnetism/bad luck was caused by Akako. She transferred all of his luck to the Kaitou Kid because she was worried about him getting caught (by someone other than her). However, when Conan and Kaito Kid are facing off directly the spell is negated. Kaitou Kid gets only his own (formidable) luck, while Conan stops being a murder magnet. This makes Kid heists body free zone guaranteed for Conan.
  • Except in the movies, especially Movie 3, Last Wizard of the Century , in which a lot of people died despite Kaitou and Conan being both in it.
    • Also one of their early meetings in the manga (not the first one, but the second or third—I think it was in volume thirty?) was during a murder investigation.

Detective Conan is placed in the same universe as Gyakuten Saiban/Ace Attorney
  • Several points :
    • The case is always murder with complicated tricks.
    • Bonus point for the original Gyakuten Saiban which also takes place in the Japan. It explained the three days trials system since the crime rates are too high and murder is a daily occurence.
    • Even if Ace Attorney takes place in USA in localization, Shinichi's parents living in Los Angeles. It's possible he could have visited and meet the cast. This is begging for crossover.
    • Young!Edgeworth actually looked like Conan.
    • Ran's mother, Eri Kisaki is actually a defense attorney
    • Phantom is a Black organization member, probably taught by Vermouth to use disguise.
  • The universes fit together almost perfectly. Bear with me for a moment.
    • It is the Dark Age of the Law. Crime has run rampant, and the court systems are full to bursting. By this point, a new, young generation who grew up in these troubled times is coming to the fore, and have taken this world and its opportunities for granted. Shady backroom deals are expected, nebulous organizations control the criminal underworld, and murder rates are through the roof.
    • From it all, this new generation rises. Lawyers are younger than ever, being rushed through the legal system to help ease the work loads. Meanwhile, budding young detectives are beginning to make a legitimate name for themselves in society. It is at the point where the police will freely (if secretly) consult with these detectives in the desperate hopes of narrowing down the suspect pools for the courts. So much the better if the detectives actually wrangle out a confession.
    • You also have incidents like the Spirit-Channeling of Kurain, Red Magic, and the confirmed reports of Sleeping Kogoro, some of which are more secretive than others.
    • Overall, these universes fill each other's gaps almost too well to be mere coincidence.

Wataru Date was Scotch
In this scenario, Date wasn't killed by accident; the Black Organization, discovering he was a mole, had sent an assassin after him, who only pretended to be a drowsy driver. Furthermore, Date may have been inadvertently exposed by Akai's activities (relating to the marriage fraud Date was investigating?), which would explain Tooru's scorn towards the FBI. They got his friend killed through negligence.

Fukui Yuzuki was actually Kuroba Kaito in disguise.
The case at Blue Parrot...well, it happened at Blue Parrot, which is the pool bar Konosuke Jii owns and doubles as Kaitou Kid's base of operations. With the way Yuzuki led Conan to the important clues that solved the case, it seems likely that no such person as Fukui Yuzuki ever existed, and it was Kaito all along.

Detective Picture Book guesses.
Which fictional detective, private eye, Amateur Sleuth, or even a criminal mastermind will be featured in Gosho Aoyama's Mystery Library in the next volume or so. Feel free to add your own ideas.

Bruce Wayne/The Batman

Nancy Drew

Joe and Frank Hardy

The Mystery Gang

The Joker

Carmen Sandiego

Agent Mulder and Agent Sculley

Dipper and Mabel Pines

Sam Spade


Dexter Morgan

Veronica Mars

Inspector Jacques Clouseau

Inspector Gadget, Penny, and Brain

Professor James Moriarty

Ernst Starvo Blofeld

John McClain

Hannibal King

John Constantine

Dick Tracy

Elementary School Student-board

James "Sonny" Crockett and Ricardo "Rico" Tubbs

Kyouko Kirigiri

The Kuroba Toichi "stage accident" will show up as a case in Detective Conan and further bridge the canon between that series and Magic Kaitou
DC's gone investigating decades-old "Cold Cases" before, after all - heck, the current arc is centered around one. Would it be so strange, then, for the two series to begins circling each other around yet another focal point - the murder of Kuroba Toichi?Now before we start, for the sake of explaining, I'll be talking as if Kuroba Toichi was definitively murdered. However, this theory could work whether he's actually dead or not.

The Kudos and the Kurobas were, at the very least, friends before the accident - not only did Yusaku know and keep their family's... moonlight professions a secret, but Toichi inspired Yusaku to essentially write a book series about what seems to be a villainous version of his friend (the Night Baron series - seriously, those complete trolls must've done so much to get on each other's nerves that we haven't heard about). Given this, if Toichi really did die that day, that death must've garnered some heartbreak and suspicion from the Kudos - and no doubt Yusaku, being the only person in the series to consistantly out-deduce Shinichi, both investigated and kept the files. Why couldn't he prove it was foul play, why didn't he spot the thread and catch the murderer? If he didn't have hard proof, it would probably be hard to talk the police into opening a homicide investigation - after all, Yusaku's suspicions of foul play would have been based entirely on Toichi's secret criminal life. (It's surprising that they were good enough to hide evidence from Yusaku, but if the theory on the Magic Kaito WMG page about Vermouth is true, the inability for Yusaku to figure out the culprit makes sense: if Toichi didn't know about Vermouth's assassin double life, Yusaku sure as hell didn't. But now, thanks to Shinichi, he does.)

Maybe we'll start getting hints that Yusaku's been looking into the case again offscreen. Maybe Conan will try to look through cases in his dad's files, or will be trying to get more info about his family's past with Vermouth, and come across it (after all, he still doesn't know she was the fake serial killer whose life he saved in New York, so he doesn't know why she favours him so much, and he probably assumes it's due to her connection with his mother - from their time together as Toichi's apprentices, which gives him a pretty good reason to look into that). To keep the wonderfully ironic in-joke that Kaitou KID represents (which is that, for once, DC readers know more about the criminal Conan's chasing than Conan), Conan probably won't figure out that Toichi was Kaitou Kid - but it'd be a good way to tie the plots of Magic Kaito and Detective Conan together. (If Conan does find out Toichi was Kaitou KID... well, the plots of DC and MK will probably merge like never freaking before, considering Kaito's main goal is to expose and foil the plans of his dad's murderers. Therefore, Conan figuring this out honestly doesn't seem likely - Aoyama's been careful to keep them mostly separate, with implied connections hidden just... offstage, as it were, rather than direct, concretely tied connections and plots).

This would also help us, the fans, get more information about Toichi's life and death that may not be strictly relevant to the distinctly-not-murder-mystery-centric plot of Magic Kaitou - and even further, invert how DCMK crossovers have so far gone: instead of the Detective Conan audience knowing more than Conan through reading Magic Kaitou, the Magic Kaitou audience would know more than Kaito through reading Detective Conan. If done cleverly enough, such an investigation could foreshadow future events of the Magic Kaitou manga and add to the implied connections between the Kuroba and Kudo families that Aoyama has been having fun letting the fans figure out for themselves.

Kaito and Shinichi are secretly twins
That's right. Time to destroy all your Kaishin dreams. Somebody had to say it.

So, first off, we all know about the infamous identicality of Kaito and Shinichi. Kaito's been mistaken for Shinichi on more than one occasion by his closest friends, and has used this to his advantage in the movies: it is an intentionally mentioned point that Kaito and Shinichi are virtually identical save hairstyle, further highlighted by Aoyama supposedly claiming in an interview that there is an in-story reason they look alike, though it hasn't been revealed. It doesn't help that it's easy to deduce that both their parents and their parents' most trusted friends belonged to the same small, unique social circle: Jii was Toichi's assistant, Agasa is Jii's supplier, Yusaku's long-standing Holmes-and-Watson-esque partnership with Agasa has been referrenced many a-time, Toichi was friends/moonlight sparring buddies with Yusaku, who also knew his secret identity, and Yusaku married Yukiko, who was herself Toichi's apprentice. All we're missing is finding out that Kaito's mom's been traveling the world with Yukiko off and on and everyone in the group will be accounted for.

That is a lot of "coincidental" connections for two supposedly unrelated families to have, especially two supposedly unrelated families who also coincidentally have two sons who are not only the exact same age, but also identical of face, voice, and intelligence - and even resemble each other behaviorally. The only visual difference is the hairstyle (and sometimes the animators do weird things with colors, but canonically they have the same hair and eye color - none of this "indigo" or "purple" nonsense, every official art picture has Kaito's eyes the same shade of blue as Shinichi's). Point is, even the fans mix up pictures of them if they're wearing ordinary hats or the tops of their heads are cropped off of an image. And even more coincidentally, despite their parents' relationships, it's implied they were never introduced to each other, despite the fact that each couple had met the other's child and there's no way they wouldn't immediately be reminded of their own when they did - so why not introduce them at some point? Isn't that strange? Considering their parents were such close friends and their children are the same age? Don't parents usually bring their children along when they meet up so they can socialize and have "playdates" - especially the parents of a child as bad at socializing as Shinichi was? Did they seriously turn up at the other couple's house, look at their friends' son who is eerily similar to their own son, and not question their decision to presumably leave their own child back with some kind of babysitter? You'd think Toichi would be super into his son having a functional twin to assist in magic tricks! Twins are, like, one of the most useful tools in magic, every magician wants twin assistants, and a magician who himself has a doppelganger is able to vastly increase his range of possible illusions. A secret "twin" that no one would suspect you have because you're an only child? Even better!

It just doesn't make sense... unless there's a reason the two identical-looking boys shouldn't be seen with each other.

Well, perhaps they're just so cataclysmically destructive together, their parents never wanted to put them in the same room (laughs). Perhaps they already tried once, and never want to go through that again (after all, the assumption that they've never met is based off the fact that we've never seen evidence of any interaction through all their flashbacks as children, despite childhood and childhood friends being significant to their backstories and current relationships - they still hypothetically could have met once offscreen and just had nothing come out of it. It's just... unlikely, unless Aoyama has a reason to keep that quiet).

Joking aside, considering what their parents got up to and encouraged their children to get up to, I doubt "avoiding mayhem" was the reason. More seriously, there are two main possibilities: First, their fathers could be related. I say their fathers, because their mothers bare no resemblence to each other.

I find this possible - Yusaku and Toichi do bare a certain resemblence to each other, especially in the manga and the earlier anime representations before DC's style changed, and they have a playful, borderline brotherly history of non-maliciously trolling each other - but the resemblence isn't nearly as strong as the resemblence between their sons, and statistical genetics stand against this possibility in terms of likeliness. If Toichi and Yusaku were brothers, Kaito and Shinichi would be related through shared grandparents. As first cousins, they would only share about 25% of their genetic code. Given that their dads do not resemble each other nearly as much as their sons do, and their mothers do not resemble each other at all, the likelihood that Kaito and Shinichi would be born not only inexplicably identical, but also supposedly coincidentally within a month and a half of each other, is abyssmally low. Not to mention their shared personality traits, despite, again, apparently never having met as child. The uncanny resemblance is slightly more likely if Toichi and Yusaku were identical twins, in which case Kaito and Shinichi would share 50% of their genetic code, but while this is still a possibility, I find this unlikely. As stated before, they are clearly not identical. (Of course, they could be going out of their way to look different while still maintaining "natural" looks, but to have a reason for that would indicate an entirely different secret going on - and this is lacking evidence, even circumstantial evidence).

Therefore, if there is an in-story reason behind the resemblance as Aoyama has apparently claimed, barring more bizarre explanations like cloning and magic, odds are on the second option: they're twins.


Example of: