Mystery Anime: 7 Series Sorted by the Puzzle You Enjoy

Which moment do you replay after a good mystery: the second you guessed right, or the second you realised you had been looking straight at the answer for three episodes? Those are different pleasures. Some shows lay out the evidence and wait for you. Some only make sense once you have put the scenes in the right order. A few care less about who did it than about why the true answer gets buried.

Each of the seven series below sets one of those puzzles, in 11 to 25 episodes a season, and none of them involves a notebook that kills people. If a duel between two geniuses is what you are after, that lives in our Death Note guide.

Which puzzle do you like?

Puzzles with no crime: Hyouka

If you want to notice things Hyouka

• 22 episodes
• one season
• adapts part of a novel series

A student who hates wasting energy keeps getting talked into solving small school mysteries by a classmate who cannot let anything go.

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Houtarou Oreki lives by a rule: if something can be skipped, he skips it, and if it can’t, he does it quickly. Eru Chitanda joins the Classic Literature Club on the same day he does, and she lives by two words, “I’m curious”, usually said from much too close. The first case is how she came to be locked inside a clubroom she walked into herself. Later ones involve a library book that different students borrow and return on the same day each week, and a festival thief who takes one small item from each club in the order of the Japanese syllabary.

Kyoto Animation gives these tiny cases the lighting and staging of a prestige drama, and deductions play out as reconstructions you can check. The puzzles are small enough that you will solve a few yourself. Nearly every one turns out to be about something a person wanted and was too embarrassed to say, which is why the show stays with you after the answer.

Twenty-two episodes make up a single season, with no sequel series. The final episode ends on a moment between two characters rather than a finale, which suits the show and frustrates anyone wanting an answer. There is also not a single murder in it.

The case of the week

If you want to solve along The Apothecary Diaries

• 24 episodes
• second season of 24
• story continues

A pharmacist's daughter sold into the imperial palace as a maid tries to stay invisible, then solves a poisoning anyway.

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Maomao grew up mixing medicines in the pleasure district, until she was kidnapped and sold to the rear palace as a low servant. Her plan is to keep her head down and wait out her term. The emperor’s infant children are sickening, though, and she works out why, leaves an anonymous warning, and gets traced by Jinshi, a palace official so beautiful it unsettles everyone. From then on she is a food taster, and she keeps a bandage on her left arm because she tests poisons on herself.

Each case is laid out fairly: the symptom, the dish, who touched the cup. Maomao explains her reasoning in the flat voice of someone who finds toxins more interesting than people, and that deadpan carries the comedy. Around the cases runs a slower thread about court politics and who Jinshi really is, which is still open after two seasons, with a third announced. Content note: poisonings, the death of an infant, and a court built on concubinage.

If you like an armchair genius GOSICK

• 24 episodes
• closes with an epilogue

1924, a small invented European country, and a girl who solves murders without leaving the library.

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Kazuya Kujo is a Japanese exchange student at a boarding school in Sauville. He climbs the library tower’s maze of stairs to find Victorique de Blois, who reads, eats sweets, and reassembles what she calls fragments of chaos into answers, while her half-brother, Inspector Grevil de Blois, takes the credit. The early cases are locked rooms and sinister invitations with a gothic coat of paint. The second half turns toward Victorique’s family and a coming war, which is more melodrama than mystery.

If you want the comedy version Ron Kamonohashi's Forbidden Deductions

• 13 episodes
• second season of 13
• the manga goes further

A banned genius detective solves cases from the shadows while an earnest young police officer takes the credit.

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Ron was the top student at BLUE, the world’s most prestigious detective academy, until an incident on a school trip got him expelled and stripped of his licence. Totomaru Isshiki is an honest, athletic, slightly slow police detective, and their deal is simple: Ron finds the culprit and Totomaru gets his name in the papers. The cases are brisk and play fair, and the incident behind Ron’s ban is darker than the banter suggests. Detective Conan is the obvious elder in this format, but it is over a thousand episodes long and still airing, which makes it a hobby rather than an evening.

The truth nobody wants: UN-GO

If you distrust the official version UN-GO

• 11 episodes
• prequel film, Episode 0
• cases close

In a Japan rebuilt after war and terror, a detective solves each case correctly and loses anyway.

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Shinjuro Yuki is known as the Defeated Detective. Rinroku Kaisho, a wealthy adviser to prosecutors, watches crime scenes from home through his own computer systems and announces tidy solutions that comfort a tired public. Shinjuro turns up late and shabby and finds the real answer, which rarely suits anyone. His partner Inga is a demon who can ask a person one question and force a truthful reply, so each case builds toward choosing that question exactly right.

The series loosely adapts detective stories by Ango Sakaguchi and moves them into a near future of mass surveillance and a rewritten constitution. That gives every puzzle a second layer: you are working out who did it and also why the powerful would prefer a different answer. Eleven episodes is short for this much plot, and some cases resolve faster than you can follow. The film Episode 0: Inga Chapter shows how the pair met and can wait until afterwards. Content note: murder and political violence.

The scrambled timeline: Boogiepop and Others

If you like assembling the order Boogiepop and Others

• 18 episodes
• several arcs, each closing

Students are going missing from a high school. The first arc tells the same few weeks from a different student each time.

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The rumour at Shinyo Academy is of a shinigami called Boogiepop, a pale figure in a tall, pipe-shaped hat and a black cape. Keiji Takeda realises the figure wears the face of his girlfriend, Touka Miyashita, and speaks to him like a stranger. The opening arc then hands the story to another student, and another, each holding a piece of what happened, with no single one of them holding all of it.

Madhouse’s 2019 series is cool to look at, all flat light and empty corridors, and it trusts you to keep track. The puzzle is less who than when, and which scene you have already watched from the other side. Later arcs bring new characters and new threats, with Boogiepop appearing at the edges. Content note: gory deaths, suicide, and a predator who feeds on students.

The rules of the loop: Summer Time Rendering

If you want rules to crack Summer Time Rendering

• 25 episodes
• complete story

A young man goes home to a small island for a funeral and keeps waking up on the ferry.

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Shinpei Ajiro comes back from Tokyo to Hitogashima, a small island off Wakayama, because his childhood friend Ushio Kofune drowned saving a girl. At the funeral there are marks on Ushio’s neck, and the island has an old story about shadows that copy people, where seeing your own means you will die soon. Before long Shinpei is killed, and he wakes on the ferry, arriving for the same funeral again.

The mystery is what the shadows want. The puzzle is the loop, which has limits Shinpei can only learn by testing them, and the show plays fair with those rules: when a plan works, you can see why it worked. The 25 episodes tell the whole story, and the second half becomes a louder action series that some viewers like less. Content note: repeated shootings and stabbings, body horror, and a camera that lingers on Ushio in a swimsuit more than the story needs.

If loops and paradoxes are the part you enjoy, the science fiction guide has more. For mysteries that definitely finish, see anime with endings, and if Hyouka’s quiet kind was yours, open the Finder with Hyouka selected.