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Is there anyone who knows the name of this mystery genre?
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Agatha Christie was a master of the genre.

There are genres called "locked room mystery" or "locked room murder" in Japan too. "Closed circle" mysteries I mentioned earlier sometimes have murder in a locked room.
Quillracer wrote: "Very often they're called 'Cozy Mysteries' or 'Cozies' because of the setting (a 'closed' environment) and because the murders happen off-stage (aren't described in the book).
Agatha Christie was ..."
I thought a cozy mystery is a genre that the case happens in a more casual or normal place. The murders in "closed circle" happen on-stage because the point of view of the story is usually a character's one in the closed situation.


I've read cozies that were locked room (or closed circle) mysteries.
When I said the murder in a cozy happens off stage, I meant the only way the characters (and the reader) learn about the murder is when a character discovers the dead body somewhere in the house or on the grounds, etc. The author does not show the murder happening from either the killer's or an observer's point of view.

I love this ..."
I do not believe that the genre defined by the very specific plot structure you describe has a name in English. "Cozies" are a much broader category, and "locked room" is not the right label either (bad weather and lack of police are not defining features of a locked room mystery).

I think it is a typical case of locked room mystery. There are many studies about solutions for the situation, e.g. a suicide, the victim locked the room to protect himself/herself from the attacker and then died, the killer was still in the room when the body was found, and so on.
Quillracer wrote: "When I said the murder in a cozy happens off stage, I meant the only way the characters (and the reader) learn about the murder is when a character discovers the dead body somewhere in the house or on the grounds, etc. The author does not show the murder happening from either the killer's or an observer's point of view."
I see. So, murders usually happen off stage in Japanese mysteries.
Christophe wrote: "I do not believe that the genre defined by the very specific plot structure you describe has a name in English."
I'm surprised and wondering if they are not popular in English books.


I still haven't got a Japanese chip installed in my brain.

It's a quite common trope in western mysteries, not just Agatha Christie, since it's a convenient way to limit the number of suspects. Some interesting examples are Nine and Death Makes Ten (murder on a ship travelling over the Atlantic ocean) and 1222 (people snowed in).

People stranded on an island
People trapped in a collapsed building..
Basically, anywhere you can isolate a group of people from the world at large and have one of them murdered by another person and the rest forced to solve the crime fits the criteria.


Thanks for noting the use the term "closed circle" for TV plots. As you note, the idea is used in may Golden Age mysteries.
As to the term "locked room," I prefer the narrow definition of locked room as an "impossible crime" where a victim is found in a locked room, no one has been seen entering or leaving, there is no murder weapon on the scene, etc. John Dickson Carr was a master at this. Just having multiple suspects stuck in a manor house or snowed in train or other locale cut off from the rest of the world is not enough for a plot to qualify as a locked room mystery, under that narrow definition of the genre.

I still haven't got a Japanese chip installed in my brain."
Unfortunately, there seems no closed circle mystery translated from Japanese. Japanese books are rarely translated into other language. Higashino Keigo is one I know as an mystery author whose books have been translated, and he wrote some closed circle mysteries actually but just in Japanese.
Paula wrote: "Some interesting examples are Nine and Death Makes Ten (murder on a ship travelling over the Atlantic ocean) and 1222 (people snowed in)."
I can borrow 1222 from my library. Thank you for the nice recommendation!
Quillracer wrote: "There have been other variations on the idea:
People stranded on an island
People trapped in a collapsed building."
I also like a situation where people cannot leave a village because the only bridge to other town was broken by the culprit or because the only road to other town was closed by a landslide.


Yep, they both qualify as well.

I love this ..."
A few other 'closed circle' you might be interested in:
The Burglar in the Library by Lawrence Block
Red Christmas by Patrick Ruell
Mystery in White by J. Jefferson Farjeon
The Scent of Almonds by Camilla Lackberg
I thought I'd seen a recently translated Japanese book about a group of students on an island but my memory is terrible with titles...I'll see if I can find it.
Almost worth starting a Listopia!

ETA: another in translation
The Moai Island Puzzle by Alice Arisugawa

The Burglar in the Library has its translated version. I'll try it!
Miss M wrote: "I was thinking of The Decagon House Murders by Yukito Ayatsuji
ETA: another in translation
The Moai Island Puzzle by Alice Arisugawa"
Ayatsuji is the most famous author about closed circle mystery in Japan. I haven't read the decagon house murders yet (maybe it's his first novel), but one of his works is that I like best on this genre. Arisugawa is famous mystery author too. Actually I have read one of his closed circle mystery, the two head devil (not translated).


I love the isolated mystery theme like And then There were none - I just call them Secluded or trapped mysteries. I don't know that they have an official names. Locked Rooms is another sub-genre as I stated above with examples, at least in my opinion.
I do like the term people are using in the thread called "Closed Circle". That makes sense and is a good name for this mystery trope.

The definition on that list is how I also think of "Locked Room Mysteries". Different from the closed circle ones though.
Looks like people rated And then there were none as the #1 voted though, which I can't agree with it being a locked room mystery. Lists are made of so many differing opinions
I do like both of these types and need to seek out more of them

If my memory serves me right, there was no murder in a looked room in "And Then There Were None", but it is on the listopia. So people seem to think "looked room" means not just a room but also a place like an island separated from the world as some here say.

I just noticed your comment after my post earlier. I'm wondering now that the idea a looked room mystery is not equal to a closed circle may be the majority.

To me they are pretty different. Locked room means impossible crime where you have to figure out how it was done when no one was in the room to murder someone, so I'm not sure why people are thinking of And Then There were none. Maybe because they are thinking they didn't know the murderer as part of the group, but that's pretty much in every mystery really.

This is sort of a locked room mystery. There are only 20,000 people on the planet Solaria. Each couple has their own estate. It is socially unacceptable and repulsive to physically see another person. All social interaction is done by viewing electronically. Even spouses rarely see each other physically. The only suspect is the victim's wife, but there is no motive and no weapon.
Books mentioned in this topic
The Naked Sun (other topics)The Moai Island Puzzle (other topics)
The Decagon House Murders (other topics)
The Moai Island Puzzle (other topics)
The Decagon House Murders (other topics)
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I love this kind of mystery;
Characters gather in a place, for example a big house in a mountain or an island,
A hurricane or a blizzard comes, so they cannot return and have to stay there for around a week,
A murder happens, and the murderer should be one of the characters, but nobody knows who it is,
Also police cannot come there because of the hurricane or the blizzard,
The second and third murder may happen,
At the end of the story, the murderer is identified, and the case may be resolved (usually the weather will become good too).
"And then there were none" and "Murder on the Orient Express" by Agatha Christie are the examples that I have read in English. I am Japanese and have read many such books in Japanese. The genre is called "closed circle" in Japan, but I do not know the name of the genre in English. So could you let me know the name? By any chance, does the genre have no name in English?