An episode in a series that serves as a sequel to a previous episode. Different from a TwoPartEpisode, in that there may be several episodes (if not several ''years'') inbetween the first episode and the one that picks up the plot again.

To qualify, it's not enough to simply have an object, setting, or character from one episode appear in another, otherwise any series with a RoguesGallery would consist almost entirely of Sequel Episode. If ''Cop Show'' has the MainCharacters arrest a thief and recover some stolen jewels in one episode, and a later episode has the thief break out of prison and cause some more havoc, that's just a OneShotCharacter moving up to RecurringCharacter status. If, on the other hand, a later episode has the cops discover that the stolen jewels they recovered were actually fakes, and they have to interrogate the thief to find out where she hid the real jewels, ''that'' is a SequelEpisode; the plot resolved in an earlier episode is reopened and explored again in a new episode.

Obviously this only applies to series where {{standalone episode}}s occur somewhat regularly. If the whole show is one long StoryArc, there's not enough separating the plot of one episode from another to make labelling it a "sequel" meaningful. However, if a series has multiple {{story arc}}s, it is possible for a later StoryArc to be a sequel to an earlier one. A show with {{half arc season}}s can also have these based on the stand-alones.[[note]]Though if the sequel to a standalone starts off a story arc, that stand-alone could be an InnocuouslyImportantEpisode.[[/note]] Compare MythArc, which can be seen as a series of these in an otherwise episodic show.

Often uses CrossReferencedTitles. Related to ContinuityNod, CallBack, and PlotArchaeology

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!!Examples:

[[foldercontrol]]

[[folder:Anime and Manga]]
* ''Anime/GhostInTheShellStandAloneComplex'' actually categorizes its first-season episodes as "Stand Alone" episodes and "Complex" episodes, of which the former are ExactlyWhatItSaysOnTheTin, and the latter are a handful of Sequel Episodes around one major StoryArc.
* In ''Anime/KirbyRightBackAtYa'', various episodes get this treatment, but special notability goes to "The School Scam" and "Teacher's Threat" (sequels to "[=eNeMeE=] Elementary"), which are actually titled [[NumberedSequels "Demon Teacher 2" and "Demon Teacher 3"]] in Japan.
* In the middle of the Johto Arc of the Anime/{{Pokemon}} Anime, the episode where Brock meets up with Suzie and her friend Zhane at a breeders' competition counts as it recalls a few points about breeding mentioned in Suzie's original appearance in Kanto and has Brock give back the Vulpix he got from her in said Kanto episode.
[[/folder]]

[[folder:ComicBooks]]
* One of the most popular ''IronMan'' stories was ''Armor Wars'' in the 80s. Subsequently there have been two sequels to the arc, ''Armor Wars II'' (in the 90s) and Armor Wars III (in 2012).
* Roger Stern's SpiderMan story, "Nothing Can Stop the Juggernaut" from the early 80s was followed up by 2009's "Something Can Stop the Juggernaut". And to make it even better, the sequel was written by Stern as well!
* Creator/DonRosa wrote several stories in the ComicBook/DisneyDucksComicUniverse that serve as sequels to stories by Creator/CarlBarks (Rosa was [[PromotedFanboy a big fan of Carl's works growing up]]). "The Money Pit" is a sequel to "The Trouble With Dimes", "Return to Plain Awful" is a sequel to "Lost in the Andes", and so on.
* ''ComicBook/{{Noob}}'': In Comic 5, Sparadrap turns out be a GeniusDitz at fluxball, the FictionalSport that has been added to the setting of the fictional {{MMORPG}} everyone is playing. This results in the titular guild winning a tournament of the sport that has been organized to promote the new activity. Starting Comic 6, the story turns into its own retelling of the franchise's MythArc, in which fluxball plays absolutely no role. In Comic 12, which happens during a time period other media of the franchise skipped over, the Noob guild goes to Japan to participate in an international fluxball tournament due to technically being the top team in France after the events of Comic 5.
[[/folder]]

[[folder:ComicStrip]]
* ''ComicStrip/FoxTrot'' did a months-long story where Jason and Marcus goes to a summer camp, with Eileen and her new friend Phoebe. Several years later, they did a follow-up where Phoebe visits their city.
* One ''ComicStrip/{{Retail}}'' story ended with Cooper getting Keith Sanzen arrested. Years later, Keith returned as an inventory supervisor, still bitter over his arrest.
* The ''ComicStrip/CalvinAndHobbes'' storyline with the duplicator had a sequel where Calvin perfected the device (he added a literal MoralityDial).
[[/folder]]

[[folder:Literature]]
* The ''Literature/{{Redwall}}'' series currently consists of several vaguely related stories that take place in the same universe. However, there are a few cases of Direct Sequels. Mattimeo was sequel to the Original book; Mossflower has a sequel in ''Legend of Luke'' and a prequel in ''Martin the Warrior'', and ''The Bellmaker'' is a direct sequel to ''Mariel of Redwall''.
* Literature/SpocksWorld reopens the events of "Amok Time" as the motive for the BigBad.
* Inverted in Creator/AgathaChristie's novels ''Literature/MurderOnTheOrientExpress'' (published 1934), ''Murder in Mesopotamia'' (published 1936) and ''Literature/DeathOnTheNile'' (published 1937), all of which take place on the holiday that Poirot takes in the Near East. The inversion is due to the fact that the stories are ''prequels'' to each other, for in Poirot's chronology, he goes down the Nile, visits Mesopotamia, and then travels on the Orient Express, the events occurring in ''reverse'' publishing order.
* Frequently happens with [[TabletopGame/{{Warhammer 40000}} Black Library]] stories, where authors often revisit plot threads from earlier books, often with many years and various different books passing between. This tends to happen a lot between ''Literature/HorusHeresy'' and "present day" stories, such as ''Titanicus'', which continues the story of the stolen book from ''Mechanicum'', though taken place thousands of years later (while also being a spinoff of the ''Literature/GauntsGhosts'' series that explains why the Titan legion that was supposed to back the eponymous team up in one of the earlier books couldn't make it).
[[/folder]]

[[folder:Live-Action TV]]
* ''Series/AccordingToJim'' has the season 6 episode ''The Grill II'', which is a sequel to the season 4 episode ''The Grill''.
* ''Series/{{Angel}}'' has several examples.
** In season 3 episode 2 "[[{{Recap/AngelS03E02ThatVisionThing}} That Vision Thing]]", a prisoner is freed from another dimension by Angel, who then returns 4 episodes later to cause havoc.
** Faith's return in season 4 may be considered this to her appearance in season 1, "[[{{Recap/AngelS01E18FiveByFive}} Five By Five]]" and "[[{{Recap/AngelS01E19Sanctuary}} Sanctuary]] ".
** "[[{{Recap/AngelS03E19ThePrice}} The Price]]" from the third season shows the consequences to the gang's actions in " [[{{Recap/AngelS03E17Forgiving}} Forgiving]]", 2 episodes before.
* ''Series/{{Bones}}'''s Gravedigger: first appearance in the 2nd season, caught in the fourth, put on trial in the fifth.
* ''Series/BuffyTheVampireSlayer'':
** In the episode "[[{{Recap/BuffyTheVampireSlayerS3E9TheWish}} The Wish]]" the vengeance demon Anyanka creates an AlternateUniverse where vampires rule Sunnydale. By the end of the episode TheVerse is returned to normal and Anyanka is left powerless. Later that season, the episode "[[{{Recap/BuffyTheVampireSlayerS3E16Doppelgangland}} Doppelgangland]]" was driven by Anyanka's attempts to regain her powers, and maybe [[RealityWarper warp reality]] back into a vampire run hellhole while she's at it.
** "[[{{Recap/BuffyTheVampireSlayerS5E15IWasMadeToLoveYou}} I Was Made To Love You]]", an episode about Warren's robot girlfriend running amok in Sunnydale, ended with Spike getting him to build another robot. The payoff came in "[[{{Recap/BuffyTheVampireSlayerS5E18Intervention}} Intervention]]" which involved Spike's newly-built Buffy-bot on the loose in Sunnydale.
* ''Series/CriminalMinds'' has ''Outfoxed'', where the UNSUB is a copycat of a killer who first appeared in ''The Fox''.
* ''Series/{{CSI}}'' did this with 'The Execution of Catherine Willows' and its sequel 'What's Eating Gilbert Grissom?" which aired a few seasons later. Both focused on the 'Blue Paint Killer', who was actually a pair of killers, though only in the end of the second ep was the whole setup explained.
** Also, there was storyline with the CreepyChild girl suspect in 'The Unsual Suspect' and 'Goodbye and Good Luck'
** CSI likes doing this with their serial killer cases...Paul Millander's storyline was spread over at least two seasons, with months of eps between them. Only the Miniature Killer's storyline episodes were relatively close together.
* ''Series/{{CSINY}}'' had a similar thing with Shane Casey, seemingly ending his case in season 3, then having him escape and start another arc in season 6.
* ''Series/DoctorWho'':
** "[[Recap/DoctorWhoS3E2MissionToTheUnknown Mission to the Unknown]]", the Dalek Cutaway, led into "[[Recap/DoctorWhoS3E4TheDaleksMasterPlan The Daleks' Master Plan]]", two serials later. The latter story also follows up "[[Recap/DoctorWhoS2E9TheTimeMeddler The Time Meddler]]" with the return of the Monk.
** "[[Recap/DoctorWhoS5E5TheWebOfFear The Web of Fear]]" is a sequel to "[[Recap/DoctorWhoS5E2TheAbominableSnowmen The Abominable Snowmen]]" featuring the return of the Great Intelligence and Professor Travers. That story got a sequel in "[[Recap/DoctorWhoS6E3TheInvasion The Invasion]]", which saw Colonel Lethbridge-Stewart promoted to Brigadier and UNIT established, plus a SuspiciouslySimilarSubstitute for Professor Travers and his daughter Ann.
** "[[Recap/DoctorWhoS8E1TerrorOfTheAutons Terror of the Autons]]" to "[[Recap/DoctorWhoS7E1SpearheadFromSpace Spearhead from Space]]".
** One notable example is "[[Recap/DoctorWhoS9E2TheCurseOfPeladon The Curse of Peladon]]" and "[[Recap/DoctorWhoS11E4TheMonsterOfPeladon The Monster of Peladon]]". They even reused the same sets.
** "[[Recap/DoctorWhoS9E3TheSeaDevils The Sea Devils]]" is a sequel to "[[Recap/DoctorWhoS7E2DoctorWhoAndTheSilurians Doctor Who and the Silurians]]", in that it established the titular monsters as cousins. "[[Recap/DoctorWhoS21E1WarriorsOfTheDeep Warriors of the Deep]]" was a sequel to both stories.
** All the Dalek stories from "[[Recap/DoctorWhoS12E4GenesisOfTheDaleks Genesis of the Daleks]]" until "[[Recap/DoctorWhoS25E1RemembranceOfTheDaleks Remembrance of the Daleks]]" follow an ongoing story involving the Doctor's conflict with Davros and set the Last Great Time War in motion.
** Creator/PeterDavison's first year had a story called "[[Recap/DoctorWhoS19E3Kinda Kinda]]", in which a plot point was a snake-like being called the Mara gaining influence over Tegan to further its goals. The next year saw the story "[[Recap/DoctorWhoS20E2Snakedance Snakedance]]", penned by the same writer, in which we learn that the Mara still has control over Tegan and possesses her once again in order to achieve physical form.
** "[[Recap/DoctorWhoS20E1ArcOfInfinity Arc of Infinity]]" is a sequel to "[[Recap/DoctorWhoS10E1TheThreeDoctors The Three Doctors]]", in that it saw the return of Omega.
** "[[Recap/DoctorWhoS22E1AttackOfTheCybermen Attack of the Cybermen]]" is a sequel to "[[Recap/DoctorWhoS21E4ResurrectionOfTheDaleks Resurrection of the Daleks]]", in that it brings back the mercenary Lytton.
** "[[Recap/DoctorWhoS22E5Timelash Timelash]]" is a sequel to an ''untelevised'' adventure the Third Doctor had with Jo.
** "[[Recap/DoctorWhoS24E1TimeAndTheRani Time and the Rani]]" to "[[Recap/DoctorWhoS22E3TheMarkOfTheRani The Mark of the Rani]]"
** "[[Recap/DoctorWhoS27E11BoomTown Boom Town]]" continues the story of a Slitheen who survived the events of "[[Recap/DoctorWhoS27E5WorldWarThree World War Three]]".
** "[[Recap/DoctorWhoS27E2TheEndOfTheWorld The End of the World]]", "[[Recap/DoctorWhoS28E1NewEarth New Earth]]" and "[[Recap/DoctorWhoS29E3Gridlock Gridlock]]" are season-apart stories loosely connected to the Face of Boe's final message to the Doctor.
** Satellite Five (and all the mess the Doctor's involvement caused) reappears in [[Recap/DoctorWhoS27E12BadWolf Bad Wolf]] / "[[Recap/DoctorWhoS27E13ThePartingOfTheWays The Parting of the Ways]]", after an assumed one-off encounter with the Mighty Jagrafess in "[[Recap/DoctorWhoS27E7TheLongGame The Long Game]]".
** While ''Series/{{Torchwood}}'' was a recurring {{Arc Word|s}} in series 2 (with the Doctor meeting a group identifying as the Torchwood Archive in "[[Recap/DoctorWhoS28E8TheImpossiblePlanet The Impossible Planet]]" / "[[Recap/DoctorWhoS28E9TheSatanPit The Satan Pit]]"), the Doctor's only direct encounters were at the founding in "[[Recap/DoctorWhoS28E2ToothAndClaw Tooth and Claw]]" and his capture by ([[spoiler:and the subsequent slaughtering of the team of by the real villains]]) Torchwood London in "Army of Ghosts".
** The Dalek episodes from "[[Recap/DoctorWhoS28E12ArmyOfGhosts Army of Ghosts]]" to "[[Recap/DoctorWhoS30E13JourneysEnd Journey's End]]" directly follow on from one another. [[spoiler:Depending on interpretation, the surviving Daleks from "[[Recap/DoctorWhoS31E3VictoryOfTheDaleks Victory of the Daleks]]" may have come from the Dalek invasion of "[[Recap/DoctorWhoS30E12TheStolenEarth The Stolen Earth]]".]] A similar use happens with Cybus Cyberman stories from "[[Recap/DoctorWhoS28E5RiseOfTheCybermen Rise of the Cybermen]]" to "[[Recap/DoctorWhoS30E14TheNextDoctor The Next Doctor]]", which, subsequently, also involves the aforementioned "Army of Ghosts".
** "[[Recap/DoctorWhoS30E17E18TheEndOfTime The End of Time]]" picks up from [[spoiler:The Master's death]] at the end of "[[Recap/DoctorWhoS29E13LastOfTheTimeLords Last of the Time Lords]]".
** Series 4, 5 and 6 have a recurring string of non-consecutive River Song episodes ("[[Recap/DoctorWhoS30E8SilenceInTheLibrary Silence in the Library]]" / "[[Recap/DoctorWhoS30E9ForestOfTheDead Forest of the Dead]]"; "[[Recap/DoctorWhoS31E4TheTimeOfAngels The Time of Angels]]" / "[[Recap/DoctorWhoS31E5FleshAndStone Flesh and Stone]]", "[[spoiler:[[Recap/DoctorWhoS31E12ThePandoricaOpens The Pandorica Opens]]" / "[[Recap/DoctorWhoS31E13TheBigBang The Big Bang]]"]]..., though from her point of view, they're prequel episodes.
** Series 5's "[[Recap/DoctorWhoS31E11TheLodger The Lodger]]", a BreatherEpisode just before the series 5 finale, was followed by series 6's "[[Recap/DoctorWhoS32E12ClosingTime Closing Time]]", a BreatherEpisode just before the series 6 finale.
** The 50th anniversary special "[[Recap/DoctorWho50thASTheDayOfTheDoctor The Day of the Doctor]]" has two sequel multi-part episodes in Series 9 (which aired two years later):
*** "[[Recap/DoctorWhoS35E7TheZygonInvasion The Zygon Invasion]]" / "[[Recap/DoctorWhoS35E8TheZygonInversion The Zygon Inversion]]" is a sequel to the B-plot, revealing what happened to the Zygons after the Doctor foiled their scheme.
*** The finale three-parter "[[Recap/DoctorWhoS35E10FaceTheRaven Face the Raven]]"/"[[Recap/DoctorWhoS35E11HeavenSent Heaven Sent]]"/"[[Recap/DoctorWhoS35E12HellBent Hell Bent]]" is a sequel to the A-plot as [[spoiler: the Doctor returns to Gallifrey at last]]. "Face the Raven" itself doubles as a sequel to both Series 8's "Flatline", as Rigsy needs Clara and the Doctor's help once more, and "The Girl Who Died"/"The Woman Who Lived" from earlier in this season, as [[spoiler: Ashildr/Me returns]].
* In ''Series/TheFlash1990'', the episodes "The Trickster" and "Trial of the Trickster" were several episodes apart but they were combined into one two-part "movie" for VHS release.
* ''Series/{{Friends}}'' : "TOW the Embryos" and "TOW All the Haste" about Rachel & Monica and Joey & Chandler switching apartments. They both even start the same, with Rachel being rudely awakened in the morning.
* ''Series/HerculesTheLegendaryJourneys'' has done this a number of times. For example, there was the episode 'King For A Day', where Iolaus has to impersonate a missing king. A season or two later came 'Long Live The King', where Iolaus has to impersonate the king again.
* ''Series/TheHauntingHour'' has Season 4's "Dead Bodies", which picks up from the end of Season 1's "The Dead Body."
* ''Series/HowIMetYourMother'': First there was "Slap Bet" where Marshall won the right to slap Barney in the face five times, as hard as he can, at any moment he chooses. Next season, we got the episode "Slapsgiving", where Marshall decides to dole out one of his slaps on [[ThanksgivingEpisode Thanksgiving Day]] and spends the whole episode putting Barney through a ParanoiaGambit. Two more years pass, and finally "Slapsgiving 2: Revenge of the Slap" arrives: it's [[ThanksgivingEpisode Thanksgiving]] again and Marshall decides to let Ted and Robin slap Barney in his place, and, once more, Barney spends the whole episode tortured by the knowledge of what's to come.
** The first season HalloweenEpisode "The Slutty Pumpkin" establishes how Ted once met a girl in a pumpkin costume at a Halloween party who he had amazing chemistry with, but lost her number and has spent every Halloween since hoping to find her again. He finally meets her for real in the seventh season episode "The Slutty Pumpkin Returns".
* ''Series/ICarly'': ''iThink They Kissed'', where Carly finds out that Sam and Freddie shared a FirstKiss is the SequelEpisode to ''iKiss'' where the FirstKiss occurred.
** "iPsycho" and "iStill Psycho" (and the ''Series/SamAndCat'' episode "#[=SuperPsycho=]").
* ''Series/ItsAlwaysSunnyInPhiladelphia'':
** "Gun Fever 2: Still Hot" (season 9) is a sequel to "Gun Fever" (season 1).
** "The Gang Makes Lethal Weapon 6" (season 9) is a sequel to "Dee Reynolds: Shaping America's Youth" (season 6).
** "The Nightman Cometh" (season 4) expands on a plot point from "Sweet Dee is Dating a Retarded Person" (season 2).
** The plot of "The Gang Finds a Dead Guy" (season 1) gets continued in "Pop-Pop: the Final Solution" (season 8).
** "The World Series Defense" (season 5) and "The Gang Gets Stranded in the Woods" (season 6) both deal with the Gang's fondness for the Philadelphia Phillies and Mac's CelebCrush on Chase Utley.
** "The Gang Gives Back" (season 2) is a sequel to "The Gang Goes Jihad", which precedes it by a couple of episodes.
* ''Series/LawAndOrder'' brought back its [[NoCelebritiesWereHarmed Not-O-J-Simpson]] character when "If I did it" was news. Keep in mind the character was from many ''seasons'' ago. Two other examples:
** "Coma" featured comedian Larry Miller as a nightclub owner whose first wife died under mysterious circumstances. He was the prime suspect until a junkie came forward and confessed to the crime. The last scene of that episode was the cops viewing a videotape where the junkie was shown to have performed at the suspect's nightclub. Two years later (in an episode called [[ExactlyWhatItSaysOnTheTin "Encore"]]), Miller's character returns after his second wife is murdered. He looks like he's able to evade justice again, but this time [[spoiler:his would be ''third wife'' is revealed to have helped screw up the investigation. The cops get her to cooperate by reminding her of what happened to the suspect's first two wives]].
** The first season episode "Indifference", is based on the [[http://en.wikipedia.org/wiki/Joel_Steinberg Joel Steinberg]] case. In that episode, [[InspiredBy not-Steinberg]] was convicted and sent to jail. Around the time the real Steinberg was released (a decade and a half later), the episode "Fixed" had the not-Steinberg character be released from jail, only to be gunned down and become the [[AssholeVictim victim]] of the story.
* ''Series/{{Merlin}}'' has three Lancelot-centric episodes (though he appeared in a couple more) that encompass his CharacterArc: ''Lancelot'', ''Lancelot and Guinevere'' and ''Lancelot du Lac,'' making him the only character to have three episodes named after him.
* ''Series/ModernFamily'''s second-season ValentinesDayEpisode, "Bixby's Back", is a sequel to the first season's "My Funky Valentine", at least as it applies to Claire and Phil.
* ''Series/{{Psych}}'':
** The series has an episode called "Extradition: Canada" and another more recent one called "Extradition: Canada 2 (The Actual Extradition Part)".
** The {{season finale}}s of seasons 3-5: [[SerialKiller "An Evening With Mr. Yang"]], "Mr. Yin [[ThemeSerialKiller Presents ..."]], and "Yang 3 in 2D".
* The fifth-season ''Series/QuantumLeap'' episode "[[{{Recap/QuantumLeapS5E07DeliverUsFromEvil}} Deliver Us From Evil]]" is a sequel to the second-season episode "[[{{Recap/QuantumLeapS2E08Jimmy}} Jimmy]]": Sam leaps into Jimmy [=LaMotta=] a second time, a couple years after his first leap, and finds that the happy future he should have caused is failing to occur (thanks to an EvilCounterpart whose goal is to MakeWrongWhatOnceWentRight). This episode gets its own sequel later that season when the evil leaper returns in "[[{{Recap/QuantumLeapS5E16ReturnOfTheEvilLeaper}} Return of the Evil Leaper]]".
* ''Series/RedDwarf'' has the Series VI episode "[[Recap/{{Red Dwarf Season VI Emohawk Polymorph II}} Emohawk: Polymorph II]]", which is a sequel to the Series III episode "[[Recap/{{Red Dwarf Season III Polymorph}} Polymorph]]". The three-part special "[[Recap/{{Red Dwarf Back To Earth}} Back to Earth]]" also acts as a sequel to the Series V episode "[[Recap/{{Red Dwarf Season V Back To Reality}} Back To Reality]]".
* ''Series/{{Scrubs}}'': Some of the episodes are titled "His/Her/Their Story" (the usual episodes are titled as [[IdiosyncraticEpisodeNaming "My ___"]]) with [[NumberedSequels Roman Numerals used to indicate which part it is]]. These episodes focus on [[LowerDeckEpisode characters other]] than JD.
* ''Series/StargateSG1'' has what amounts to a ''{{prequel}}'' episode: "[[Recap/StargateSG1S4E162010 2010]]" is set entirely in a BadFuture, with the [[FutureLoser future versions]] of SG-1 working to send back a warning. The episode ends when they succeed, then a season later in "2001" the events referenced as history in 2010 start happening and they have to decypher the NoteToSelf to avert it.
* ''Franchise/StarTrek'' features several of these, spanning multiple series:
** The ''[[Series/StarTrekTheNextGeneration TNG]]'' episode "[[Recap/StarTrekTheNextGenerationS1E2TheNakedNow The Naked Now]]", for instance, was a sequel to the ''[[Series/StarTrekTheOriginalSeries TOS]]'' episode "[[{{Recap/StarTrekS1E4TheNakedTime}} The Naked Time]]".
** ''[[Series/StarTrekDeepSpaceNine DS9]]'' delighted in doing this to TOS, with "[[{{Recap/StarTrekDeepSpaceNineS05E06TrialsAndTribbleations}} Trials and Tribble-ations]]" as a sequel to the iconic "[[{{Recap/StarTrekS2E15TheTroubleWithTribbles}} The Trouble with Tribbles]]", and a whole series of sequels exploring the mirror universe introduced in TOS' "[[{{Recap/StarTrekS2E4MirrorMirror}} Mirror, Mirror]]".
** ''Film/StarTrekIITheWrathOfKhan'' could be seen as a feature-length sequel to "[[{{Recap/StarTrekS1E22SpaceSeed}} Space Seed]]".
** ''[[Series/StarTrekVoyager Voyager]]'': ''[[Recap/StarTrekVoyagerS5E17CourseOblivion Course: Oblivion]]'' is a sequel episode to ''[[Recap/StarTrekVoyagerS4E22Demon Demon]]''.
* ''Series/{{Supernatural}}'':
** The series has "Hell House" in season 1 and its sequel "Ghostfacers" in season 3.
** "{{LARP}} [[Film/LarsAndTheRealGirl and the Real Girl]]" and "Pac Man Fever", are sequels to "[[Literature/TheMillenniumTrilogy The Girl With The]] TableTopGame/DungeonsAndDragons [[Literature/TheMillenniumTrilogy Tattoo]], in which [[EnsembleDarkhorse Charlie]] first appeared.
* ''Series/TheWonderYears'': The fifth season premiered with "The Lake", where Kevin meets a girl named Cara while on vacation at the lake. The season ended with "Back to the Lake", where Kevin returns to the location specifically to reunite with Cara.
* ''Series/TheXFiles'':
** A first season episode "[[Recap/TheXFilesS01E21Tooms Tooms]]" was a sequel to an episode earlier in the season, "[[Recap/TheXFilesS01E03Squeeze Squeeze]]", one of the few they did like that. In the first ep they caught the MonsterOfTheWeek and in the later ep he was released from psychiatric ward. It's pretty damn hard to prosecute a supernatural crime...
** The episode "[[Recap/TheXFilesS02E13Irresistible Irresistible]]" had the sequel "[[Recap/TheXFilesS07E07Orison Orison]]". They featured a creepy serial killer obsessed with dead women and Agent Scully. In "Orison", he escapes from prison and tries to find Scully.
** "[[Recap/TheXFilesS03E17Pusher Pusher]]" had the sequel "[[Recap/TheXFilesS05E08Kitsunegari Kitsunegari]]". "Pusher" is considered a brilliant episode with a great antagonist for Mulder. "Kitsunegari" is disappointing as he inexplicably became helpful and his previously-not-mentioned twin sister has the same paranormal abilities (which he gained because of his untreated brain tumour).
* In ''Series/EnemyAtTheDoor'', the first-season episode "The Jerrybag" (in which a woman gets pregnant to a German soldier and has to decide whether to keep the baby after he's reassigned and killed in action) was followed up in the second-season episode "The Right Blood" (in which the soldier's family learns about the boy and tries to convince her to give him over to them).
* In ''Series/LegendsOfTomorrow'', the season 2 episode "Outlaw Country" is a sequel to the season 1 episode "The Magnificent Eight", as the Legends return to the Old West and once again work with Jonah Hex.
* In ''Series/TheFlash2014'', "King Shark" is a sequel to a minor plot in "The Fury of Firestorm", this time focusing on the titular villain, whose initial appearance lasted only about a minute.
[[/folder]]

[[folder:Music]]
* Music/IronMaiden had the tale of Charlotte the Harlot chronicled in 4 songs from 1980 to 1992: "Charlotte the Harlot" (''Iron Maiden'', 1980), "22 Acacia Avenue" (''The Number of the Beast'', 1982), "Hooks in You" (''No Prayer For the Dying'', 1990), and "From here to Eternity" (''Fear of the Dark'', 1992).
* Music/{{Metallica}} with "The Unforgiven" on their self-titled album in 1991, and then "The Unforgiven II" on the album ''Reload'' in 1997, and finally "The Unforgiven III" on the album ''Death Magnetic'' in 2008.
* Music/{{Megadeth}} had the fan favorite song "Hangar 18" on their 1990 album, ''Rust in Peace''. In 2001, they released a sequel song, "Return to Hanger" on the album ''The World Needs a Hero''.
* Music/{{Manowar}} had a unique case of prequel episode (song), with "Metal Warriors (Brothers of Metal Pt. 2)" released in 1992 on their ''Triumph of Steel'' album, and the "Brothers of Metal Pt. 1" released in 1996 on their ''Louder Than Hell'' album.
* Music/{{Overkill}} have: "Overkill", "Overkill II (The Nightmare Continues)", "Overkill III (Under The Influence)", "Overkill IV (E.Vil N.ever D.ies)" and "Overkill V (The Brand)". Confusingly, they covered the Music/{{Motorhead}} song "Overkill" as well (the source of the band's name, and a completely different song).
* Music/{{Queensryche}} broke through with their 1988 ConceptAlbum, ''Opertaion: Mindcrime''. They made a sequel album in 2006, ''Operation: Mindcrime II'' and performed both albums back-to-back while on tour that year, chronicled on the DVD, ''Mindcrime At The Moore''.
* Music/HeIsLegend's first album included the track "The Seduction" which was followed by "Dixie Wolf (the Seduction of...)" in their second album. They also had one of "China White" parts 1, 2, and 3 in each of their three albums.
[[/folder]]

[[folder:Webcomics]]
* ''Webcomic/SluggyFreelance'' gave us the horror movie spoof "KITTEN", and naturally it couldn't parody horror movies without parodying the inevitable sequels; hence, "KITTEN II".
* [[http://www.drunkduck.com/dragon_city Dragon City]] does this from time to time with story arcs. There was at least one story arc that have about four or five story arcs that were sequels of it and of each other since the latter ones were consequences of the first story arc.
* WebComic/{{Jix}}, which is by the same person who created Dragon City, also does this from time to time, but possibly not as extensively as Dragon City.
* The "Sister II" arc of ''Webcomic/ElGoonishShive'' is rather predictably a sequel to the much earlier "Sister" arc. The initial "Sister" arc dealt with the events surrounding Ellen's creation via the Dewitchery Diamond, and the start of her journey to become her own person separate from Elliot who's memories she shared. The sequel primarily dealt with the fallout, such as the wizard who made the diamond, and swore to destroy any "abominations" created by it, and the fact that touching the diamond in the first place had a slightly greater effect on both Elliot and Ellen than anyone realized at the time.
[[/folder]]

[[folder:Web Original]]
* ''20 Ways to Lose Your Man Card'' by [[WebVideo/MatthewSantoro Matt Santoro]] details a symbolic representation of one's manliness. It recieved a followup called ''20 MORE Ways to Lose Your Man Card''.
* [[Music/GiIvaSunner SiIvaGunner]]'s high quality "[[https://www.youtube.com/watch?v=kKKOsq-SglU Main Theme - Ubisoft E3 Conference 2016]]" rip is mostly him ranting about the lack of ''VideoGame/BeyondGoodAndEvil2'' in Creator/{{Ubisoft}}'s [[UsefulNotes/ElectronicEntertainmentExpo E3]] conference that year. The following year, his "[[https://www.youtube.com/watch?v=0MzGCXpXUn0 Main Theme - Ubisoft E3 Conference 2017]]" rip has him travel to 2017 (when [[VideoGame/KirbyPlanetRobobot Max Profitt Haltmann]] [[ItsALongStory has taken over his channel while he's asleep]]) to discover that Ubisoft is indeed making the game.
[[/folder]]

[[folder:Western Animation]]
* In ''WesternAnimation/{{Futurama}}'' the episode "[[{{Recap/FuturamaS2E19TheCryonicWoman}} The Cryonic Woman]]" is essentially a sequel to the pilot episode (showing how far Fry's come, reminding us of what his life was like before he was frozen and showing how someone might suffer for being a FishOutOfWater in his situation). They even pointed this out in the DVD commentary.
** During the episode "[[{{Recap/FuturamaS3E2ParasitesLost}} Parasites Lost]]", among the many changes to himself via a beneficial worm infestation in his body, Fry gains the ability to play a holophonor (it is said that not many people in the whole universe can play it, and the few that ''could'' can't play it well), cementing his relationship with Leela. However, to find out whether or not she loves the real him, Fry induces a PygmalionSnapBack by driving the worms out of his body. He tries playing the holophonor again, and as expected, he lost both his talent and his seduction over Leela. The episode ends with Fry practicing on the holophonor, but this is not revisited until "[[{{Recap/FuturamaS4E18TheDevilsHandsAreIdlePlaythings}} The Devil's Hands Are Idle Playthings]]", a SeriesFauxnale centering on Fry's ability to play the holophonor.
* ''WesternAnimation/AdventureTime'' has a lot of episodes that are continuations of others.
** "Return to the Nightosphere"/"Daddy's Little Monster" for "It Came From the Nightosphere".
** "Crystals Have Power" for "Tree Trunks".
** "Too Young" for "Mortal Recoil". "You Made Me" for "Too Young". "All Your Fault" for "You Made Me".
** "Incendium" for "Too Young". [[ThemeNaming Any episode with]] a fire-related {{pun}} as the title will feature Flame Princess, as "Hot to the Touch" and "Burning Low" both follow "Incendium".
** "The Creeps" for "Mystery Train", and "The Vault" for "The Creeps".
** "From Bad to Worse" for "Slumber Party Panic".
** "Beautopia" for "Susan Strong"
** "In Your Footsteps" for "Mortal Recoil".
** "The Lich" and [[TwoPartEpisode "Finn the Human"/"Jake the Dog"]] for "In Your Footsteps".
** "Jake the Dad" for "Lady and Peebles".
** "King Worm" for "Evicted!".
** "I Remember You" for "Holly Jolly Secrets," and even more directly, "Simon and Marcy" for "I Remember You."
** [[TwoPartEpisode The "Lemonhope" two parter]] for "Too Old".
** "James II" for "James".
** "The Pit" for "Play Date".
** "[[TwoPartEpisode "Wake Up"/"Escape from the Citadel"]] for "Billy's Bucket List"
** "The Tower" for [[TwoPartEpisode "Wake Up"/"Escape from the Citadel"]]
** "Breezy" for "The Tower"
** "Is That You" for [[TwoPartEpisode "Wake Up"/"Escape from the Citadel"]]
* ''WesternAnimation/KimPossible'':
** The second season episode "Return to Wannaweep" is a sequel to the first season ep "Sink or Swim", in which Gill, a mutated former camper "buddy" of Ron's wreaks havoc. In the sequel episode, Wannaweep has been re-opened, and Gill has returned to his human form.
** In the fourth season, "Oh No, Yono!" follows up on the introduction of Hana, Ron's [[{{Tykebomb}} adoptive baby sister]] in "Big Bother", with plotlines set up in the "Big Bother" coming to fruition in "Oh No, Yono!".
** The events of the GrandFinale "Graduation" are triggered by Warmonga (and her mate Warhok) returning to Earth to get revenge on Kim and Drakken for defeating and making a fool of [[ThirdPersonPerson Warmonga]] in "Mad Dogs and Aliens".
* ''WesternAnimation/TheAngryBeavers'', the episodes "Up All Night" and "Up All Night 2: Up All Day. The Reckoning". The first one concerns the beavers trying to stay up until morning, and eventually staying up until TheFuture. In the second one, they get back via a DeusExMachina and decide to go to sleep, eventually [[spoiler:falling asleep for so long that they wake up in TheFuture again]]. Also, the "Muscular Beaver" episode managed to have ''four'' {{Numbered Sequel}}s.
* ''WesternAnimation/SouthPark'':
** In the first episode (titled "[[{{Recap/SouthParkS1E1CartmanGetsAnAnalProbe}} Cartman Gets an Anal Probe]]"), alien visitors probe Cartman. This wasn't brought up again (aside from a ClipShow ParodyEpisode) until the 100th episode, "[[Recap/SouthParkS7E1Cancelled Cancelled]]".
** Season 13's "[[Recap/SouthParkS13E2TheCoon The Coon]]", in which Cartman adopts a superhero identity a la ''Franchise/{{Batman}}'' and encounters his "archrival", Mysterion, is revisited near the end of the fourteenth season, where Cartman, back as the Coon, has gathered up the South Park kids in a superhero team reminiscent of ''ComicBook/JusticeLeague'' or ''ComicBook/{{Watchmen}}'', and the story proceeds to involve the gang dealing with BP (now renamed DP)'s reckless spilling that inadvertently unleashes Cthulhu and his minions upon the Earth in a massive three-episode story arc ([[ItMakesSenseInContext Don't ask.]]) right before the 14th season finale.
** [[Recap/SouthParkS14E5TwoHundred 200]]" and [[Recap/SouthParkS14E6TwoHundredOne 201]]", while being a MilestoneCelebration, were likewise sequel episodes to "[[Recap/SouthParkS5E4ScottTenormanMustDie Scott Tenorman Must Die]]" and the "[[Recap/SouthParkS2E2CartmansMomIsStillADirtySlut Cartman's Mom is Still a Dirty Slut]]" two-parter.
* ''WesternAnimation/{{Recess}}'': "The Big Prank" is about T.J. attempting to pull a prank on King Bob so he can officially earn the latter's former title of "Prankster Prince". "The Madness of King Bob" has Bob, jealous of T.J. getting more admiration for his pranks than he did when he held the title, abandon his post so he can pull a prank on T.J.
* ''WesternAnimation/ThePowerpuffGirls'':
** "Supper Villain" is an episode about a neighbor of the Powerpuff Girls who decides to become a supervillain when they visit his house. "Just Deserts" sees his family joining him.
** "Monkey See, Doggy Two" is about Mojo Jojo trying to redo his plan from "Monkey See, Doggy Do" more successfully.
** "Aspirations" has Sedusa trying to restore her power after having her PrehensileHair cut at the end of "Something's a Ms.".
* ''WesternAnimation/TeenTitans'':
** In the season 1 episode "Masks", Robin creates the supervillain persona of Red X, with which he tries to deceive both his enemies and friends. In the Season 3 episode "X", a thief steals the supersuit Robin used and [[TheRealRemingtonSteele assumes said identity]], with Robin dwelling over his previous actions.
** The StoryArc of the second season surrounded [[SixthRangerTraitor Terra]], which ended with her [[spoiler:[[TakenForGranite turning to stone]] [[SuperpowerMeltdown from using her powers]] [[RedemptionEqualsDeath to save the city]]]]. After the fifth and final seasons resolved its own story arc, the very last episode, "Things Change", picks Terra's story back up when [[spoiler:Beast Boy finds a girl who appears to be her, but with no memory of being so]].
* In ''WesternAnimation/TheSimpsons'' episode "[[Recap/TheSimpsonsS10E10VivaNedFlanders Viva Ned Flanders]]", Homer and Ned get married to two floozies while drunk in UsefulNotes/LasVegas. The episode ends with Homer and Ned leaving town and their second wives behind. Three seasons later in "[[Recap/TheSimpsonsS13E7BrawlInTheFamily Brawl in the Family]]", the two women reappear, having tracked them to Springfield.
** "[[Recap/TheSimpsonsS2E15OhBrotherWhereArtThou Oh Brother, Where Art Thou?]]" shows Homer meeting his successful, [[LongLostRelative long-lost half-brother]] Herb, and ends with Homer ruining his brother's career and their relationship. "[[Recap/TheSimpsonsS3E24BrotherCanYouSpareTwoDimes Brother, Can You Spare Two Dimes?]]" shows a down-on-his-luck Herb returning, regaining his fortune with the Simpsons' help, and reconciling with Homer.
** "[[Recap/TheSimpsonsS14E7SpecialEdna Special Edna]]" was continued in "[[Recap/TheSimpsonsS15E17MyBigFatGeekWedding My Big Fat Geek Wedding]]".
** Season 28 has "[[Recap/TheSimpsonsS28E15KampKrustier Kamp Krustier]]", which is a sequel to Season 4's "[[Recap/TheSimpsonsS4E1KampKrusty Kamp Krusty]]".
* ''WesternAnimation/StarTrekTheAnimatedSeries'' had several episodes that were sequels to episodes in ''Series/StarTrekTheOriginalSeries''.
** "[[Recap/StarTrekTheAnimatedSeriesS1E10MuddsPassion Mudd's Passion]]" to the episodes "[[{{Recap/StarTrekS1E6MuddsWomen}} Mudd's Women]]" and "[[{{Recap/StarTrekS2E8IMudd}} I, Mudd]]"
** "[[Recap/StarTrekTheAnimatedSeriesS1E5MoreTribblesMoreTroubles More Tribbles, More Troubles]]" to "[[{{Recap/StarTrekS2E15TheTroubleWithTribbles}} The Trouble with Tribbles]]".
** "[[Recap/StarTrekTheAnimatedSeriesS1E2Yesteryear Yesteryear]]" to "[[{{Recap/StarTrekS1E28TheCityOnTheEdgeOfForever}} The City on the Edge of Forever]]" (both involve time travel using the Guardian of Forever).
* The ''WesternAnimation/FamilyGuy'' episode "[[Recap/FamilyGuyS10E23InternalAffairs Internal Affairs]]" is a continuation of "[[Recap/FamilyGuyS9E17ForeignAffairs Foreign Affairs]]", both go into Joe and Bonnie's deteriorating relationship.
** "[[Recap/FamilyGuyS12E11BriansABadFather Brian's a Bad Father]]" for "[[Recap/FamilyGuyS6E11TheFormerLifeOfBrian The Former Life of Brian]]".
* ''WesternAnimation/TheAvengersEarthsMightiestHeroes'':
** The episode "A Day Unlike Any Other" ends with Captain America getting abducted by Skrulls. "Prisoner of War" later shows how Cap escapes them.
** "Nightmare in Red" has the Incredible Hulk get arrested for false pretenses, and "The Deadliest Man Alive" has his teammates try to free him.
* ''WesternAnimation/TeenageMutantNinjaTurtles1987'' had a couple. One was "Mr. Nice Guy," which was a sequel to the episode "Leonardo Lightens Up," as both plots involved one of the Turtles being affected by Donatello's personality ray. "Michelangelo meets Bugman," had a sequel that was naturally called, "Michelangelo Meets Bugman Again." "Adventures in Turtle Sitting" was a spiritual sequel to "Back to the Egg," as both had some of the Turtles reduced to five years old which left the one(s) who kept their natural age to look after them (notably, Leonardo was turned into a five-year-old in ''both''). "Menace, Maestro Please," was a sequel to "Name That Toon," and is notable for immediately following the previous episode unlike most cases.
* ''WesternAnimation/BatmanTheAnimatedSeries'' had "His Silicon Soul," which was a direct sequel to the 2-part "Heart of Steel", and "Day Of The Samurai" which was a sequel to the earlier "Night Of The Ninja." When the show became ''The New Batman Adventures'', "Joker's Millions" followed up on a plot point briefly mentioned in the "World's Finest" {{Crossover}} with ''WesternAnimation/SupermanTheAnimatedSeries''.
* ''WesternAnimation/TazMania'' had "Here, Kitty, Kitty, Kitty," and its follow up "Here, Kitty, Kitty, Kitty Part II," which saw an evil housecat owned by Taz's sister Molly try to kill Taz, and every single time Molly saw the two the cat would [[WoundedGazelleGambit pretend to be the victim]].
* ''WesternAnimation/RockyAndBullwinkle'' had the story arcs "Moosylvania" and the series finale "Moosylvania Saved."
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' episode "Skeletons in the Water Closet" ends with Billy's mom going crazy because of Grim. "Grim vs. Mom" has her coming back to settle the score. And then there's the Nigel Planter episodes, and the Secret Snake Club episodes.
* ''WesternAnimation/{{Arthur}}'': "The Blizzard" (Season 4) features the town pooling their food and coming together to deal with a power outage. A radio broadcaster makes wildly inaccurate forecasts. Much of this happens again during "The Blackout" (Season 12), with Dave Read remembering how bad the forecasts were.
** Likewise the two episodes that deal with D.W's Snowball.
* ''[[WesternAnimation/RenAndStimpy Ren & Stimpy: Adult Party Cartoon]]'' has "Fire Dogs 2" which is a sequel to an episode of the original series, though it has little to do with it apart from it starting where the original episode ended.
* In ''WesternAnimation/MickeyMouseClubhouse'', the episode "Goofy Babysitter" is a followup to "Goofy Baby", except instead of Goofy getting turned into a baby, Mickey and the rest of his friends end up transformed.
* ''WesternAnimation/MrBogus'' had "[[Recap/MrBogusS3E7SuperBogusFliesAgain Super Bogus Flies Again]]", as a follow-up episode to "[[Recap/MrBogusS2E8BogusToTheRescue Bogus To The Rescue]]".
* On ''WesternAnimation/HongKongPhooey'', there was always something connecting the two 11-minute segments.
* ''WesternAnimation/JusticeLeague'' had "The Return", a sequel to "Tabula Rasa" and "Ancient History", the sequel to "Shadow of the Hawk".
* ''WesternAnimation/TheTransformers'' was not as continuity-driven as later installments, but it did have a few episodes that connected to each other despite not being a multi-parter. For one impressive example, the "Five Faces of Darkness" five-parter comes directly after the [[WesternAnimation/TransformersTheMovie movie]]. "Thief in the Night" reveals what happened to Trypticon after fighting Metroplex in "Five Faces of Darkness". "Thief in the Night" is used to explain why Octane was banished by the Decepticons in "Starscream's Ghost". The ghost of Starscream would later reappear in both "Ghost in the Machine" and the ''WesternAnimation/BeastWars'' episode "Possession". Starscream's immortality would later be used to explain Rampage's in "Bad Spark".
* ''WesternAnimation/TheLooneyTunesShow'' has "Best Friends" and "Best Friends Redux".
* ''WesternAnimation/TheSmurfs'' had "Smurfette Unmade" as a sequel for "The Smurfette" and "Dreamy's Pen Pals" as a sequel for "The Astro Smurf".
* ''WesternAnimation/CodenameKidsNextDoor'': Had plenty over it's run they may have well been [[StoryArc Story Arcs]].
** ''Operation C.A.K.E.D'' (which were all named with a number at the end, save S.I.X) dealt with the K.N.D confronting the Delightful Children and trying to take their birthday cake away from them [[spoiler: Only failing in the the sixth one due to some clever manipulation by the [=DCfdtL=].]] Likewise the final episode, Operation I.N.T.E.R.V.I.E.W.S, was centered around this.
** "Operation C.A.B.L.E.-T.V." lead into "Operation E.N.D".
** "Operation: J.E.W.E.L.S.", "Operation: R.A.B.B.I.T.", "Operation: C.H.O.C.O.L.A.T.E.", and "Operation: L.I.C.O.R.I.C.E." and "Operation: C.A.R.A.M.E.L." detailed the story around Numbuh Five and her arch-rival, Heinrich
** "Operation: E.N.D", "Operation: T.R.A.I.N.I.N.G." and "Operation: G.R.A.D.U.A.T.E.S." which focused on Numbuh 2's brother, Tommy, training to be a K.N.D agent.
** "Operation: P.R.E.S.I.D.E.N.T.", and "Operation: S.N.O.W.I.N.G." set up "Operation: E.L.E.C.T.I.O.N.S." Detailing the fiasco with the school president and the consequences that followed.
* ''[[WesternAnimation/MyLittlePonyFriendshipIsMagic My Little Pony: Friendship is Magic]]'':
** [[Recap/MyLittlePonyFriendshipIsMagicS3E5MagicDuel "Magic Duel]] is a sequel episode to [[Recap/MyLittlePonyFriendshipIsMagicS1E6BoastBusters "Boast Busters"]].
** [[Recap/MyLittlePonyFriendshipIsMagicS5E8TheLostTreasureOfGriffonstone "The Lost Treasure of Griffonstone"]] is a sequel episode to [[Recap/MyLittlePonyFriendshipIsMagicS1E5GriffonTheBrushOff "Griffon the Brush Off"]], which aired five years prior.
** [[Recap/MyLittlePonyFriendshipIsMagicS5E12AmendingFences "Amending Fences"]] is a sequel episode to [[Recap/MyLittlePonyFriendshipIsMagicS1E1MareInTheMoon the first episode]] [[Recap/MyLittlePonyFriendshipIsMagicS1E2ElementsOfHarmony of the show]]. More specifically, ''the first three minutes of the first episode of the show''.
* ''WesternAnimation/TeenTitansGo'': "Be Mine" for both "Terra-ized" and "Opposites"; after a PreviouslyOn segment, it picks up where "Terra-ized" left off.
* ''WesternAnimation/WanderOverYonder'': "The Gift" for "The Gift 2: The Giftening"--despite the name, the ''first'' one is the POVSequel that continues slightly past where the first left off.
* ''WesternAnimation/StevenUniverse'' is normally a continuity-heavy series where things that change in one episode are regularly called back to in another, and some episodes' plots are directly derived from earlier ones:
** The episodes "Steven's Lion", "Lion 2: The Movie", and "Lion 3: Straight to Video" [[SubvertedTrope don't actually have much to do with each other]] as far as their individual plots are concerned, aside from Lion having a major role in each. "Lion 2" and "Lion 3" receive an ''actual'' follow-up in "Rose's Scabbard", which revisits certain elements of the previous episodes (in particular, Rose's armory and her CoolSword). "Lion 4: Alternate Ending" follows up on "Lion 3" in a different way, as Steven reassesses the message from his mother to find some hidden purpose.
** "House Guest", the first episode of the first season's second half, deals with one of the immediate consequences of "Mirror Gem"/"Ocean Gem", the half-season finale (Greg's broken leg, an injury he suffered in "Ocean Gem").
** "Open Book" is one to "Rose's Room". Both are set in the eponymous room, and both have a similar plot where Steven has to deal with the room's strange effects.
** "The Test" kicks off when Steven discovers that the Sea Spire mission from "Cheeseburger Backpack" was a test, which he thinks he failed.
** The first episode of season 2, "Full Disclosure", picks up directly from the ending of the season 1 finale, "The Return"/"Jail Break", as Steven tries to cope in the aftermath of the latter.
** "We Need to Talk" is a direct follow-up to "Story for Steven", both being {{Whole Episode Flashback}}s centered on Greg and Rose.
** "Super Watermelon Island" is not only a sequel to "Watermelon Steven", it is also part of the resolution of two separate {{Story Arc}}s. (The arcs in question are [[spoiler: Malachite and the Cluster/Peridot's redemption]].)
** "Beach City Drift" is one to "Alone Together". The plot of the former is kicked off when a character from the latter reappears, causing other characters to remember him.
** "Monster Reunion" is a direct sequel to "Monster Buddies".
** In "Historical Friction", the characters [[ShowWithinAShow put on a play]] about the founding of Beach City. "Buddy's Book" picks up where the play's story left off. However, it stars the play's {{Deuteragonist}}, which makes it more of a SpinOff Sequel Episode.
* The ''WesternAnimation/MyLifeAsATeenageRobot'' episode "Raggedy Android" is about Dr. Wakeman making a suit that could disguise [[RidiculouslyHumanRobot Jenny]] as a human, but [[FlawedPrototype doing such a rushed job]] that people were far more scared of it than Jenny. "Return of Raggedy Android" centered on a newer version of the Exo-Suit that actually worked [[GoneHorriblyRight and far too well]]. The latter had a SequelHook for ''another'' possible SequelEpisode (the Exo-Suit was still alive and took Mr. Mesmer as a new host) [[WhatHappenedToTheMouse which was never resolved on-screen]] (though Mr. Mesmer was later shown to be fine, implying it was dealt with offscreen)[[note]]there actually was a plan for a third episode, in which the Exo-Suit kidnaps Brad and threatens to kill him if Jenny does not surrender herself to its control but Nickelodeon executives rejected it for being too disturbing[[/note]].
* ''WesternAnimation/AtomicPuppet'' does this a fair bit.
** "Atomic Detention" ends with Joey and AP accidentally driving Joey's [[ApatheticTeacher Apathetic]] SadistTeacher Ms. Erlenmeyer [[ItMakesSenseInContext into madness and supervillainy, and she ascends a portal into another dimension.]] It was seemingly forgotten for the next while, until "Erlenmeyer's Revenge", where Ms. Erlenmeyer returns to Joey's school, revealing that she has been transformed into the psychic Queen Mindbender by a malevolent alien entity from the dimension she entered.
** "Tick'D Off" picks up immediately after "Survival of the Feltest" with Joey, his dad, and AP coming back home from their camping trip, and Joey finding that a tick from the campsite has embedded into his neck and it becomes sentient when Joey and AP power up.
** "Monster Truck Invasion" sees the return of Zorp, the leader of the aliens from "Pizza Planet", in a new scheme ToServeMan. Then the episode ends with Zorp finding an astronaut chimp, which leads to the plot of "Buck Monkey".
** "Lacer Takes Over" is a sequel to "These Shoes", as it turns out the malicious A.I. of the [[TrickedOutShoes Lacer Hypertops]] has survived the destruction of its body to continue its scheme to lead machinekind in overthrowing humanity and find itself a new body.
* ''WesternAnimation/TheAmazingWorldOfGumball'' began doing sequel episodes during Season 3 as [[ContinuityCreep continuity began to play a larger part in the show]]:
** Both "The Burden" and "The Bros" act as sequel episodes to "The Shell", the latter moreso than the former. Each episode, all of which were aired on consecutive weeks, forms part of a loose trilogy about [[RelationshipUpgrade Gumball and Penny's relationship]] and [[FriendVersusLover Darwin's feelings towards it]].
** "The Nobody" deals with Darwin and Gumball finding out someone is living inside their house. [[spoiler:It turns out to be Rob, who they saw floating around in "The Void", but didn't help, and got out on his own.]] In turn, "The Nemesis" is a sequel to "The Nobody", about [[spoiler:Rob trying to take revenge for them abandoning him]].
** "The Man" is about Richard coping with his mother finding a new boyfriend and that his father abandoned him. "The Signature" follows this up as Richard attempts to prevent them getting married, [[spoiler:and ends up reuniting with his father]]. To a minor degree, "The Check" is a sequel to "The Signature", as the episode kicks off when Richard's new stepdad gives his grandkids a gift they start fighting over. "The Inside" follows up "The Signature", being about [[spoiler:the Wattersons spending time with Richard's father (and finding out why he left in the first place)]].
** "The Pest" deals with the (very minor) fallout from Anais rejecting Billy's friendship in "The Egg".
** "The Awkwardness" is a sequel to "The Hug", both of which are about the [[CringeComedy relentlessly awkward meetings]] between Gumball and someone he doesn't know.
** In "The Nest", the monster that's been kidnapping citizens of Elmore turns out to be [[spoiler: the Evil Turtle from "The Puppy".]]
* ''DangerMouse'': "The Hickory Dickory Dock Dilemma" had "The Clock Strikes Back" as its sequel.
* Occurs twice in ''WesternAnimation/DefendersOfTheEarth'':
** In "A House Divided", Ming turns the Phantom's estranged brother, Kurt (who believes he is the rightful Phantom) into N'Dama the Weather Demon and lures the Phantom and Jedda into a confrontation with him. Kurt/N'Dama reappears in "Family Reunion", where he is still out for revenge. His lust for power ultimately proves to be his undoing and he is KilledOffForReal.
** In "The Evil of Doctor Dark", Ming turns to the evil magician Doctor Damian Dark (a former Shadow Lord and an old enemy of Mandrake) to seek the three pieces of the Orb of Konos, which has the power to grant immortality. The episode's sequel, "The Return of Doctor Dark", sees the Defenders (along with their friend, Mara), Ming's forces and Dark racing to find the pieces of the Orb; in the end, Dark (like Kurt/N'Dama) is destroyed as a result of his own greed.
* ''WesternAnimation/BumpInTheNight'' featured some episodes that were continuations of older episodes.
** "It Sang from Beyond the Stars" and "Comfort Schmumfort" are both follow-ups to "Not of This Boy's Room", as they both featured the return of the alien duo Sleemoth and Gloog and alluded to Mr. Bumpy's first encounter with them.
** "Made in Japan II" serves as a sequel to the episode "Made in Japan" and focuses on the return of Little Robot.
* ''WesternAnimation/BuzzLightyearOfStarCommand'' had an episode called "Strange Invasion", which had Team Lightyear end up on Roswell, a planet inhabited by [[LittleGreenMen stereotypical green-skinned and large-headed aliens]] who mistook them for a threat. The episode had a sequel in "Stranger Invasion", where the heroes returned to Roswell and had to help the inhabitants fight back against the invading forces of Evil Emperor Zurg.
* The ''WesternAnimation/PoundPuppies1980s'' episode "Where Do Puppies Come From?", which had the Pound Puppies help out a dog named Rusty and his pregnant mate Lucy, was given a sequel episode in "Pups on the Loose", which had Rusty and Lucy entrust the Pound Puppies with looking after their new children.
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