An unspecified (usually) date somewhere between the end of UsefulNotes/WorldWarI in 1918 and the commencement of UsefulNotes/WorldWarII in 1939. A time of women in evening gowns and gentlemen in dinner jackets mingling at well-to-do cocktail parties, rich tweed-clad country gentlemen and hard-boiled detectives who are veterans of World War I. Lots of action takes place in big country houses and small surrounding villages in the countryside, often involving (depending on the author/genre) either wacky romantic misunderstandings or cold-blooded acts of murder, both of which evolve around complex, labyrinthian schemes. In the more urban areas (usually either London or New York), there's lots of ArtDeco around, swank parties, heavy drinking, and gay repartee. While TheRoaringTwenties and then TheGreatDepression both took place around this period, the rather conservative and patrician milieu of the Genteel Interbellum Setting tends to keep the era's real-world social, cultural, and political upheavals somewhat at arm's length.

This trope was formerly named "Christie Time" after the period when most (if not all) of Creator/AgathaChristie's Literature/HerculePoirot {{novel}}s are thought to be set (they actually cover a time period of 1916 to the early 1970s, suggesting that Poirot lives to be over a hundred years old) and when all said TV adaptations are set. It could well have been called [[Creator/PGWodehouse Wodehouse]] Time also.

The historical name for this period is the Interbellum, hence the name. Later portrayals may see it combined with DieselPunk.

In his short story ''Umney's Last Case'', Creator/StephenKing refers to a temporal variant, ChandlerAmericanTime. Here, the action is set at the very end of the period, just before America enters the War in 1941.

In GenteelInterbellumSetting and ChandlerAmericanTime the time from 1918-1941 is usually ''[[YeGoodeOldeDays idealized]]'', while in DieselPunk it is the opposite, often containing critical deconstruction of the values of those times.

See also OldDarkHouse, which is usually the setting for TenLittleMurderVictims.

Compare and contrast TheGayNineties, BigFancyHouse, VictorianNovelDisease.
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!!Examples:

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[[folder: Board Games ]]

* ''TabletopGame/{{Clue}}'' / ''Cluedo''

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[[folder: Film ]]

* ''GosfordPark''
* ''OurDancingDaughters''
* ''Film/BrightYoungThings'', the film version of Waugh's ''Literature/VileBodies''
* ''Film/TheThinMan'' film series, depicting the adventures of Nick and Nora Charles.
* The film version of Mr. and Mrs. North.
* ''Film/TheShadow''
* ''Film/ThePhantom''
* ''Film/{{Bullshot}}''

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[[folder: Literature ]]

* Creator/GKChesterton's ''Literature/FatherBrown'' stories.
* Former TropeNamer Creator/AgathaChristie:
** ''The Secret Adversary'' (1922), which introduced Literature/TommyAndTuppence not so long after they were both out of work due to the end of UsefulNotes/WorldWarI. ''Partners in Crime'' (1929) is a series of linked short stories about their joint venture in running a detective agency. Unlike [[Literature/HerculePoirot Poirot]] mentioned above, Tommy and Tuppence [[GrowOldWithMe aged roughly in real time]].
** Christie's final novel ''Curtain'' actually does provide a timeframe for her stories (or at least the ones about Poirot, though this would probably drag a lot of others into the mix as well by proxy due to overlapping characters), placing them in the period of the early 1920s through the early 1940s. This may not always be consistent with the details of all of her stories but at least it's established.
* KerryGreenwood's PhryneFisher mysteries, which are mostly set in Australia during 1928 (although the last two books have moved into 1929, and ''Murder in Montparnasse'' had flashbacks to post-UsefulNotes/WorldWarI Paris).
* NgaioMarsh's Roderick Alleyn mysteries.
* ''[[Literature/LordPeterWimsey The Lord Peter Wimsey Mysteries]]'' by DorothyLSayers.
* Various books by Creator/EvelynWaugh, most notably ''Vile Bodies'' and ''Literature/BridesheadRevisited'', though the latter averts this by telling the story through characters during the war [[RealityEnsues reminiscing about the life they've lost]].
* Creator/PGWodehouse's Literature/JeevesAndWooster stories are often remembered as this, but in fact they do have occasional references that establish the passing of time (there's a past-tense mention of World War II in at least one of the later ones, and so on). [[Series/JeevesAndWooster The TV series]] is definitely and deliberately set in Christie Time, though.
** Wodehouse himself [[FlipFlopOfGod was a bit inconsistent]] on this point; asked point-blank when his novels were set, he said "Between the wars", and sometimes excused the out-of-dateness of his settings by claiming that he wrote "historical novels". He also confessed to [[VagueAge not knowing how old his characters were]].
* Jean Ray's Harry Dickson novels.
* E. F. Benson's ''Mapp and Lucia'' books.
* Leslie Charteris' first few dozen stories about Literature/TheSaint. But poor old Simon Templar, an RFC veteran from WWI, was still debonairly thirtyish in WWII, and still in harness in the 1983.
* Creator/JoWalton's AlternateHistory ''Literature/SmallChange'' trilogy takes place in an extended GenteelInterbellumSetting: Britain's fascist-sympathetic government stays out of WWII, while one main character is a homicide detective whose investigations drag him deeper and deeper into a conspiracy trying to keep it that way.
* Most of Creator/HPLovecraft's stories take place in this time period, appropriately enough as it covers the span of his litterary career and far preferred Ye Olde Anglo-Saxon way of life to the hustle and bustle of contemporary urban America; as the setting is LovecraftCountry, it remains credible.
* S.S. Van Dine's erudite and sublimely supercilious PhiloVance.
* Many of Rex Stout's early Literature/NeroWolfe novels are set in this period.
* RichardLockridge's husband and wife detectives, MrandMrsNorth.
* Creator/DashiellHammett's ''Literature/TheThinMan'' epitomizes the high-life in New York during this period.
* ThePhantomDetective provides a pulp-hero version of the genteel detective.
* Creator/DamonRunyon's works are some of the definitive "Everyone's-a-gangster-and-wears-hats-while-talking-snappy" incarnation of the era.
* The Creator/ElleryQueen series had its origins in this setting.
* Erich Kästner's comedy ''Drei Männer im Schnee'' (''Three Men in the Snow''), including snooty servants, big cars, and a [[FourthDateMarriage second date engagement]].

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[[folder: Live Action TV ]]

* ''Series/DoctorWho'': [[Recap/DoctorWhoS19E5BlackOrchid "Black Orchid"]] and [[Recap/DoctorWhoS30E7TheUnicornAndTheWasp "The Unicorn and the Wasp"]], plus bits of [[Recap/DoctorWhoS10E2CarnivalOfMonsters "Carnival of Monsters"]].
* ''DowntonAbbey'' moves into this period starting in Episode 7 of Series 2, Series 1 being firmly [[TheEdwardianEra Edwardian]] and the first six episodes of Series Two being set during UsefulNotes/WorldWarI.
* ''Series/JeevesAndWooster''
** The [[http://www.youtube.com/watch?v=190C8rRKe3w opening titles]] are practically the GenteelInterbellumSetting incarnate.
* ''Series/{{Poirot}}''
* ''Series/UntilAutumn''
* ''UpstairsDownstairs'' and its lookalike ''TheDuchessOfDukeStreet'', for the most part, though both actually run from about 1900 to 1930.
** ''Brass'', a comedic British NighttimeSoap [[AffectionateParody Affectionately Parodied]] this style of drama, as well as ''Series/{{Dallas}}'' and the like.

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[[folder: Music ]]

* Max Raabe and Das Palast Orchester are a modern jazz orchestra from Berlin that specializes in music of this era (and performing covers of modern pop songs in the same style).

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[[folder: Newspaper Comics ]]

* ''[[ComicStrip/RupertBear Rupert]]'' (which actually began in 1920) and other British children's NewspaperComics.

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[[folder: Theatre ]]

* Basically all of NoelCoward's comedies, such as
** ''Theatre/BlitheSpirit''
** ''Theatre/EasyVirtue''
** ''PrivateLives''
* LendMeATenor
* Operatic example: Lennox Berkeley's chamber opera ''A Dinner Engagement''.

[[/folder]]

[[folder: Video Games ]]

* ''LauraBow''
* The ''ProfessorLayton'' series ''seems'' to be set in this, but the [[AnachronismStew anachronisms flow so thick,]] you might as well chalk it up to PurelyAestheticEra.
* Amiga game ''Murder!'' is set in this kind of environment; the player character is in a mansion with a dead body and a lot of guests with secrets and has two hours to solve the crime before the police show up.
* ''TheLastExpress'' is set in 1914, just before WWI, is filled to the brim with Art Nouveau and is about [[ThrillerOnTheExpress a murder on the Orient Express]].

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[[folder: Western Animation ]]


* ''WesternAnimation/TheLegendOfKorra'' is set in an alternate universe 1920s to 1930s aesthetic bonded with Asian elements.

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