Synopsis
It is the 2030s. The Boy Detectives Club gathers under Kogorō Akechi, the mysterious detective. The group solves cases great and small using their unique skills. One day, a member of the club, Kensuke Hanazaki, meets the boy Yoshio Kobayashi. Kobayashi's body cannot die due to the effects of the "Unidentifiable Mist," but he yearns for death, and shirks from contact with other people. Taking an interest in him, Hanazaki invites him to join the Boy Detectives Club. Their meeting is connected to the fate tying together Kogorō Akechi, and the era's greatest villain, the Fiend With Twenty Faces.
Episodes
Season 11
Mirage on D. HillThe Boy Detectives' Club searches for answers when a security robot goes on a rampage in Shibuya in the year 203X.24m2
The Golden TrackerA young woman approaches the Boy Detectives' Club and asks them to find the intended recipient of a series of threat letters her boyfriend made.24m3
The Hopeless on the TowerKobayashi somehow feels that maybe he can die if he stays with Hanasaki, so he joins the Boy Detectives' Club.24m4
Underground LabyrinthAfter school, Inoue watches Katsuta's tennis club practise before heading home, and Hanasaki tests out some tools of the Boy Detectives' Club trade.24m5Spider's Threadkobayashi and Inoue are trapped in the underground channels as a result of Twenty Faces' manoeuvring.24m6
Holiday StalkerHanasaki has been trying to help Kobayashi die, but nothing has worked; while Akechi is away, Hanasaki takes the liberty of accepting six job requests.24m7
Pure TrystAkechi is relaxing at a spa to relieve the exhaustion of his recent cases; Nakamura asks him about his history with Twenty Faces, and Akechi recounts the trauma of his youth24m8
Paradise in a Miniature GardenThe residents of the Kokorogaoka Housing Complex refuse to vacate their homes for the sake of urban development, so they declare its independence from Japan as an autonomous borough.24m9
Fallen HeroIsuzu negotiates with the police for three billion yen in exchange for the removal of the residents of the housing complex.24m10
Innocent ScaleHanasaki flees the office after an argument with Akechi and the others; after, Twenty Faces makes an appearance.24m11
Cruel ToolHanasaki's act is successful in convincing Akechi and the Boy Detectives' Club that he was kidnapped by Twenty Faces.24m12
Shade by HazeHanasaki is brought to tears by the conversation between Twenty Faces and Akechi, even with a gun pointed at him.24m13
Nocturnal DanceWith the Le Waqua incident resolved and Twenty Faces in custody, the world appeared to be at peace again but the trauma of the incident left Hanasaki psychologically unstable24m14
The Spiral LadderYamane Tasuku, a member of the Scientific Experiments Club, is troubled by three things: Ohtomo picks on him, he's always left behind in conversations, and he doesn't know how to become a member of the Boy Detectives' Club.24m15
Beetle of ConvictionAfter being out of touch for so long, Akechi calls the office; the Boy Detectives' Club receives an odd request.24m16
The Beast RebornTo escape the enemies targeting Fukiya, the death row prisoner they're guarding, the Boy Detectives' Club takes refuge in the abandoned building that Kobayashi had once been using as his base24m17Scattered RecoilInoue and the other detectives are disheartened after being told that the Boy Detectives' Club would be disbanded; the strange air around Kobayashi has returned and is working hard to heal his wound.24m18
Pure Evil MistakeInoue and the other detectives are disheartened after being told that the Boy Detectives' Club would be disbanded; the strange air around Kobayashi has returned and is working hard to heal his wound24m19
Response to MaliceAs he's resting to recover from his gunshot wound, Kobayashi has an odd dream in which he sees a woman in a bed and a man approaching her; he doesn't recognize them, but the dream gives him a strange headache.24m20
Fallen ClownKobayashi searches for the place that he saw in his dream; Hanasaki and Hide-chan then show up and offer to help.24m21E21Veracious VictimMiyanishi was shot to death by Nakamura; during her interrogation, Nakamura testifies that Twenty Faces is actually Akechi.24m22E22Small Moth Flying into a FlameAkechi, stunned to learn that Nakamura was brainwashed by Twenty Faces, ends up captured by the special security force. Meanwhile, at the New Tokyo World Fair, the plane built to carry people to the stratosphere is involved in a catastrophic crash24m23E23Return of the Evening StarThe Boy Detectives' Club arrives at the Space Expo; Hanasaki and Kobayashi board the shuttle for Twenty Faces' base, where Akechi is being held captive, but things don't go as planned.24m24E24The Boy Detectives ClubHanasaki left Kobayashi behind and took off for Twenty Faces' hideout alone, planning to put an end to everything; Kobayashi can't accept that, so he follows him even though the aura surrounding him has already disappeared.24m
Mirage on D. HillThe Boy Detectives' Club searches for answers when a security robot goes on a rampage in Shibuya in the year 203X.24m2The Golden TrackerA young woman approaches the Boy Detectives' Club and asks them to find the intended recipient of a series of threat letters her boyfriend made.24m3The Hopeless on the TowerKobayashi somehow feels that maybe he can die if he stays with Hanasaki, so he joins the Boy Detectives' Club.24m4Underground LabyrinthAfter school, Inoue watches Katsuta's tennis club practise before heading home, and Hanasaki tests out some tools of the Boy Detectives' Club trade.24m5Spider's Threadkobayashi and Inoue are trapped in the underground channels as a result of Twenty Faces' manoeuvring.24m6Holiday StalkerHanasaki has been trying to help Kobayashi die, but nothing has worked; while Akechi is away, Hanasaki takes the liberty of accepting six job requests.24m7Pure TrystAkechi is relaxing at a spa to relieve the exhaustion of his recent cases; Nakamura asks him about his history with Twenty Faces, and Akechi recounts the trauma of his youth24m8Paradise in a Miniature GardenThe residents of the Kokorogaoka Housing Complex refuse to vacate their homes for the sake of urban development, so they declare its independence from Japan as an autonomous borough.24m9Fallen HeroIsuzu negotiates with the police for three billion yen in exchange for the removal of the residents of the housing complex.24m10Innocent ScaleHanasaki flees the office after an argument with Akechi and the others; after, Twenty Faces makes an appearance.24m11Cruel ToolHanasaki's act is successful in convincing Akechi and the Boy Detectives' Club that he was kidnapped by Twenty Faces.24m12Shade by HazeHanasaki is brought to tears by the conversation between Twenty Faces and Akechi, even with a gun pointed at him.24m13Nocturnal DanceWith the Le Waqua incident resolved and Twenty Faces in custody, the world appeared to be at peace again but the trauma of the incident left Hanasaki psychologically unstable24m14The Spiral LadderYamane Tasuku, a member of the Scientific Experiments Club, is troubled by three things: Ohtomo picks on him, he's always left behind in conversations, and he doesn't know how to become a member of the Boy Detectives' Club.24m15Beetle of ConvictionAfter being out of touch for so long, Akechi calls the office; the Boy Detectives' Club receives an odd request.24m16The Beast RebornTo escape the enemies targeting Fukiya, the death row prisoner they're guarding, the Boy Detectives' Club takes refuge in the abandoned building that Kobayashi had once been using as his base24m17Scattered RecoilInoue and the other detectives are disheartened after being told that the Boy Detectives' Club would be disbanded; the strange air around Kobayashi has returned and is working hard to heal his wound.24m18Pure Evil MistakeInoue and the other detectives are disheartened after being told that the Boy Detectives' Club would be disbanded; the strange air around Kobayashi has returned and is working hard to heal his wound24m19Response to MaliceAs he's resting to recover from his gunshot wound, Kobayashi has an odd dream in which he sees a woman in a bed and a man approaching her; he doesn't recognize them, but the dream gives him a strange headache.24m20Fallen ClownKobayashi searches for the place that he saw in his dream; Hanasaki and Hide-chan then show up and offer to help.24m21E21Veracious VictimMiyanishi was shot to death by Nakamura; during her interrogation, Nakamura testifies that Twenty Faces is actually Akechi.24m22E22Small Moth Flying into a FlameAkechi, stunned to learn that Nakamura was brainwashed by Twenty Faces, ends up captured by the special security force. Meanwhile, at the New Tokyo World Fair, the plane built to carry people to the stratosphere is involved in a catastrophic crash24m23E23Return of the Evening StarThe Boy Detectives' Club arrives at the Space Expo; Hanasaki and Kobayashi board the shuttle for Twenty Faces' base, where Akechi is being held captive, but things don't go as planned.24m24E24The Boy Detectives ClubHanasaki left Kobayashi behind and took off for Twenty Faces' hideout alone, planning to put an end to everything; Kobayashi can't accept that, so he follows him even though the aura surrounding him has already disappeared.24mCast
