The lush, detailed opening credits contain information about the cast or plot that nullifies surprises later in the series. Thus, it's pretty obvious that when someone apparently important shows up who isn't in the opening credits, they aren't going to be around for very long. Similarly, the series tries to pretend that someone isn't very important, but they're featured prominently in the credits.

Series that rely on PreviouslyOn in order to keep viewers up to speed are especially prone to this. Because only the parts of the story arc relevant to the current episode get recapped, the viewer is tipped off that those parts of the story arc are about to show up.

This is also particularly common in adaptations, because the producers often assume that many viewers will already be familiar with at least the basic outline plot, because many viewers are only there ''because'' they want to see spoilery stuff from far ahead in the plot, and because adaptations of LongRunners naturally have more they ''can'' spoil. In cases like those, it can also qualify as a LateArrivalSpoiler.

A series can get around this by shaping their opening credits to merely be foreshadowing, a new or edited differently opening at various points in the series, or have the opening have little to do with the actual plot.

A variation is where [[NarrowedItDownToTheGuyIRecognize vaguely famous]] names appear in the credits, so you can guess automatically that they're going to be fairly prominent in the episode before they even show up. In series with recurring characters that are not normally in the credits or a [[TheBusCameBack cameo from someone who left the show]] this can indicate their eventual presence in an episode ruining their unexpected entrance.
An overlap with ForegoneConclusion at times happens. Contrast with BaitAndSwitchCredits. If you're spoiled for the first season when you look up the opening for the second, that's a LateArrivalSpoiler. May be averted with EvolvingCredits, where credits change with the story instead of revealing everything at once. DeadStarWalking can be either a subtrope of this or an aversion, depending on how it's presented. Contrast NotNamedInOpeningCredits when an actor's name is omitted from the opening credits to maintain a surprise. See also FirstEpisodeSpoiler, which can often fall prey to this. As a WordOfGod once [[ explained]], the American Screen Actors Guild has strict rules about where credits can appear, at least partially justifying this trope.
!!'''Since this is a spoiler trope, there will be unmarked spoilers below.'''
* SpoilerOpening/AnimeAndManga
* SpoilerOpening/LiveActionTV
* SpoilerOpening/VideoGames

* ''Webcomic/OfMiceAndMayhem'', a ''WesternAnimation/ChipNDaleRescueRangers'' GraphicNovel, has a ''front cover'' that gives away half of the story.

[[folder:Films -- Animated]]
* Disney's ''Disney/RobinHood'' did this by ''showing detached scenes from the movie's plot points in the opening credits''. Every relevant character in the movie is shown with an animation of them solo from various important parts of the movie, and the animations for the rest of the credits is from ''the climax''.
* ''Disney/{{Tangled}}'': Flynn Rider announces he will die as the first line in the movie. He gets better.
* [[SubvertedTrope Subverted]] in ''WesternAnimation/{{Rango}}''. The owls say he'll die, implicitly at some point during the storyline. At the end, when it hasn't happened, one owl suggests he might die from a household accident. At some point after the timeframe of the movie.

[[folder:Films -- Live-Action]]
* The OntologicalMystery of ''Film/DarkCity'' is spoiled by the OpeningMonologue, which is taken from a scene halfway through the movie. (ExecutiveMeddling mandated the addition of the voiceover.) Future viewers: Do yourself a favour and watch the directors cut, which omits the monologue.
* Subverted in ''Theatre/{{Sleuth}}'', which deliberately features an opening cast list which proves to be wildly inaccurate.
* ''Film/SavingPrivateRyan'''s opening subverts the trope, with the prologue of the old man concluding with a graphic match cut to...John Miller. (The old man later turns out to actually be Ryan.) Played straight if you're a bit more knowledgable about the American Army: the old man is wearing a pin of the 101st Airborne (Screaming Eagles), and Ryan is the only principal character in the film in that division.
* Averted in ''Film/{{Se7en}}'': the actor playing John Doe is [[SirNotAppearingInThisTrailer missing from the opening credits]] instead receiving the first credit at the ending.
* TheMockbuster ''[[Film/ParanormalActivity Paranormal Entity]]'' takes this to extremes. Three minutes into the film, it is revealed that the protagonist's sister is dead, he went to jail for her murder, he hung himself, and then his mother (who got possessed) [[KillEmAll hung herself too]]. The remaining 87 minutes of the film are ''[[AntiClimax pointless]]''.
* The opening credits of ''Film/GoldenEye'' make it fairly plain that we haven't seen the last of Sean Bean, despite his character being "killed" before the credits even rolled.
* This is avoided in the opening of ''Film/StarTrekIIITheSearchForSpock''...but there is an extra long pause between WilliamShatner's credit and [=DeForest=] Kelley's where Nimoy's name would normally appear.
* Want to watch ''Film/BedknobsAndBroomsticks'' and not know the ending? Stop watching the opening credits when Donald [=McKayle=] is credited for the choreography!
* In the film adaptation of ''Film/{{Eragon}}'', along with being almost nothing like the book, the audience is informed of the fact that Arya is a princess during the opening narration and plot set up. A fact that readers didn't find out about until halfway through the second book.
* In the film ''Film/{{Horsemen}}'' (starring Dennis Quaid), Ziyi Zhang has second billing in the opening credits. Even if you didn't recognize the name, the fact that she's the only Asian actor in the movie gives away the fact that her character is more than she seems to be when she is first introduced.
* The opening narration of ''Film/MoulinRouge'' by Christian clearly states "the woman I loved is dead."
* The opening narration of ''Film/{{Hop}}'' spoils the fact that the main human character becomes the first human easter bunny. This concept isn't introduced untill a little before the climax, after a movie of basically nothing happening.
* The German version of Music/TheWho's ''Tommy'' has an opening narration that states "Tommy can not be dubbed!" in this exact words. The narrator then proceeds to give an overview of the films plot which means he gives away every plot twist until the very last moment of the film as if he was reading the synopsis off of Wikipedia. The narration also plays over the first two minutes of the film where Tommy's parents meet until the start of the war and cancels out any music. Then the movie proceeds with subtitles, making the inclusion of the narrator completely pointless.
* The opening several minutes of ''Film/{{Melancholia}}'' play out the entire plot in a series of stylized images.
* In the opening credits to ''[[Film/GeorgeOfTheJungle George of the Jungle 2]]'', the song gives away several plot points. The first movie's opening song cut off before it got to the extended cut's plot summary.
* Films shown as Fathom Events often like to put in making of featurettes before the movie, which often contain clips or information that can blow certain plot details for people seeing the films for the first time. [[ This video mentions the following three examples]]:
** During the making of featurette for ''[[Manga/DeathNote Death Note: The Last Name]]'', key scenes from the film were shown and it was revealed that the film was a two-parter.
** When ''Film/{{Rambo}}'' was shown in 2008, Sylvester Stalone showed the alternate ending of the first movie where Rambo died during the making-of documentary. The Rambo sequels were also mentioned in the preshow.
** The 2009 hi-definition event of ''Film/TheWizardOfOz'' spoiled many of the scenes from the film during the documentary shown before it, including the ending.
** An interview that played before the Insider Access to ''WesternAnimation/InsideOut'' event spoiled Bing Bong's death when talking about how his voice actor cried saying "Take her to the moon for me...okay?". What's even worse is that the '''trailers''' for the event spoiled some parts of the end of the film, including the scene where Joy runs through Imagination Land, the scene where Anger puts in the idea for Riley to run away and the scene where Joy and Sadness splat onto the window of Headquarters after Fear says "I wish Joy was here!"
** Thankfully, this is less frequent as it was before now, possibly due to the complaints they've recieved. Many events nowadays either put the bonus content after the movie (such as Doctor Who and The Iron Giant), use clips that don't spoil much of the movie (such as TeamHotWheelsOriginOfAwesome, which used clips from the first 20 minutes, which were already available for free on YouTube), use no clips at all (Some examples include the 2015 showings of The Wizard of Oz and Film/{{Grease}}, which had introductions by TCM hosts. For example, the Wizard of Oz screening had a brief explanation of how the film found success when it was shown on TV, since it didn't do well in theaters when it first came out.) or interview the cast (such as One Direction: Where We Are and Dragon Ball Z: Ressurection F).

* From the ''introduction'' of ''Literature/SlaughterhouseFive'':
--> I've finished my war book now... It begins like this:
--> ''Listen:''
--> ''Billy Pilgrim has come unstuck in time.''
--> It ends like this:
--> ''Poo-tee-weet?''
* The cover of the third book of Literature/TheIcewindDaleTrilogy shows the heroes fighting demons in Tartarus, which only happens at the very end of the book. Also, Bruenor is shown on the cover, who was thought dead in the previous book and makes a surprising return in this book.
* MyBrotherSamIsDead. Guess who dies at the very end of the book.
* Creator/StephenieMeyer managed to spoil ''Literature/{{Twilight}}'''s plot twist on the back of the book. Then again, Edward being a vampire is the entire premise, so it's not like anyone picked the book up without already knowing the twist.
* The first page of ''[[Literature/ArtemisFowl The Last Guardian]]'' says (at the bottom, in Gnommish): The Last Will and Testament of Artemis Fowl.
* If you're reading one of Edward Rutherford's multi-generation historical novels (''Sarum'', ''London'', etc), don't even glance at the family tree at the front of the book until you've read the whole thing: it'll spoil who has kids with whom, etc.

* Many Shakespeare plays spoil the ending in the prologue, which was basically their point. The enjoyment of the story wasn't to be surprised by the outcome, but to see how it gets there. For example, ''Theater/RomeoAndJuliet'' states that Romeo and Juliet die. In fact, many plays are referred to as tragedies right on the title pages of printed editions, so you know that things turn out poorly before you've read a word.
* The 2005 stage musical ''Willy Wonka'' is a ''Literature/CharlieAndTheChocolateFactory'' adaptation that's TruerToTheText than the [[Film/WillyWonkaAndTheChocolateFactory 1971 film version]] but uses its songs. The opening scene takes place in the factory, with Willy Wonka the first character the audience meets, and he goes on to reveal that he's planning to retire, but not before he finds an heir. In the book and most adaptations, he does not appear until the other characters arrive at the factory for the Golden Ticket tour and TheReveal that he's been seeking an heir all along is the climax of the story (he does appear in a few flashbacks in the first half of the 2005 film in order to explain the backstory, but his face is usually obscured and by the time he appears in the second half, he's...changed a bit). While the story is well-known and [[CharlieAndtheChocolateParody parodied]] enough to qualify as ItWasHisSled, and Mr. Wonka ''is'' the most memorable character in it, this opening not only spoils the whole show, but negates the attempts in subsequent scenes to build up any mystery surrounding Mr. Wonka.

* The fourth season of ''Series/FlandersCompany'' has Clara appearing in the credits along the other employees, completely spoiling both her return and her HeelFaceTurn.
* The first season of ''RedVsBlue'' had Tex appearing in the credits... along with ''her'' voice actor. There goes the plot twist that [[SamusIsAGirl Tex Is a Girl]]. Has since fallen into ItWasHisSled territory.
* In ''WebAnimation/{{RWBY}}'', it takes several episodes before the titular military team is formed, and there is much angst on the protagonist's part as she wonders who she will be partnered with...which is all well and good, except for the part where three other girls are prominently depicted in the intro, even fighting alongside her in one scene. (The other characters aren't given half so much screentime.) The DVD cover also spoils this plot point, describing Ruby's teammates in detail and showing them in a suitably badass pose.
** The intro also depicts Cinder in an ObviouslyEvil fashion- surrounded by flames and minions- which is odd, as she only appears in the season finale's [[TheStinger stinger]].
* ''WebVideo/SplinterCellExtinction'': the shot with Julian Hunter [[TakeMyHand reaching out to Corbin]] from the helicopter, spoiling the penultimate episode and finale.
* ''WebVideo/VideoGameHighSchool'': {{Inverted}} in Season 3. The closing credits don't change between episodes, so attentive viewers will notice that Nathan Kress plays "New Law" as early as Season 3 Episode 1.

[[folder: Western Animation ]]
* The first season of ''WesternAnimation/JusticeLeagueUnlimited'' showed clips from the current episode during its opening, occasionally spoiling plot points.
* An animated FunnyAnimal version of ''WesternAnimation/AdventuresOfOliverTwist'' features a montage of all the plot points from an episode, from beginning to ending, put just before the episode begins.
* ''WesternAnimation/LegionOfSuperheroes'' pilot 'Man Of Tomorrow' had spoilers in the opening credits, showing Timber Wolf who wouldn't be making an appearance until the next episode.
* ''WesternAnimation/KimPossible'': Lord Monty a.k.a. Monkey Fist appears in the opening theme from the very first episode onwards, however his first appearance was not until episode 13, where it was written as if Monty turning out to be the bad guy was a big twist.
** This happens again in the last season when the Opening changed, spoiling Warmonga well before her episode appearance. Once more her episode is written as if we're not supposed to have any idea who this ''other'' green skin lady who's helping Drakken who isn't Shego was.
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' not only gives away its central philosophy in the very title (notable since Part 1 of the two-part series premiere was a {{deconstruction}} of [[MyLittlePony the show's parent franchise]] and [[GirlShowGhetto other such "little girl shows"]]), but summarizes the main protagonist's [[CharacterDevelopment character arc]] over the course of said premiere in the first few lines of its theme song.
-->'''[[TheHero Twilight Sparkle]]:''' ''I used to wonder what friendship could be / Until you all shared its magic with me.''
** The Japanese dub opening sequences, however, runs with the trope; the 3rd opening spoils the ''[[Recap/MyLittlePonyFriendshipIsMagicS2E25ACanterlotWeddingPart1 Canterlot]] [[Recap/MyLittlePonyFriendshipIsMagicS2E26ACanterlotWeddingPart2 Wedding]]''.
* The intro for ''WesternAnimation/{{Gargoyles}}'' is comprised of scenes from the show's PilotMovie, which causes problems when you're watching it as a five-part episode.
* ''WesternAnimation/ExoSquad'': The opening narration talks about a war between the Neo-Sapiens and the Humans... a war which only STARTS in the sixth episode. This is made all the more confusing by the fact that that a Human/Neo-Sapien war took place in the show's backstory (but not the war the opening narration shows clips of).
* ''WesternAnimation/FamilyGuy'' somewhat subverted this in their two part special "100th episode". The title of the first part, "Stewie Kills Lois", spoils the plot point near the beginning where Stewie does just that. The conclusion's title, "Lois Kills Stewie", not only spoils Lois's return, but also the apparent resolution of the episode. But when that moment actually came, it was Peter who killed Stewie. Not that it matters anyway, since it was [[AllJustADream all just a simulation]].
* The intro to ''WesternAnimation/XMenEvolution'' shows all of the X-Men gathered together and shows them off by name, despite the fact that half of them don't show up for several episodes. The most notable case is Rogue, who is introduced early on as a character, but keeps her allegiance uncertain until halfway through the season.
* ''WesternAnimation/AvatarTheLastAirbender'':
** Episodes will often open with a recap of ''anything from an earlier episode that is related to the current one in any way''; if scenes from the episode "Jet" shows up in the recap, don't be surprised about the character Jet suddenly showing up in the episode. The Order of the White Lotus was given obvious importance extremely early because of this, for one example.
** The opening to the season 2 finale "Crossroads of Destiny" ends with a flashback to Roku ominously telling Aang "If you are killed in the Avatar State, the reincarnation cycle will be broken, and the Avatar will cease to exist." No points for guessing what very nearly happens at the climax of the episode.
** An alternate opening narration for the first episode averts this trope, as it gives more information on the war and the Avatar but doesn't mention Aang. Before long, though, the opposite problem develops, as the narration becomes wildly outdated by the end of season 1.
* The theme song for ''WesternAnimation/TotalDramaAction'' features Courtney, who came back halfway through to the surprise of the castmates and (maybe) Chris. However, the flipbook itself had no intention of this ever being a spoiler.
** The leaked theme song for ''World Tour'' also FINALLY settled the issue of [[BaseBreaker Ezekiel's]] participation in the season or not. He's in. For now.
* The Japanese opening of ''WesternAnimation/TransformersAnimated'' spoils Longarm being a Decepticon, Blackarachnia commanding the Dinobots, and Starscream's Allspark fragment and clones. However, there's also so much stuff that [[BaitAndSwitchCredits simply doesn't happen]] that it's hard for a new viewer to tell what's important and what isn't.
** A lot of characters that don't show up until the second or third season are given a lot of prominence.
* The opening of ''WesternAnimation/TeenageMutantNinjaTurtles2003'' spoils that Darius Dun, initially a minor supporting character, is the BigBad (he is seen looming over all the other villains).
** Despite being introduced as Shredder's lieutenants, Chris Bradford and Xever are strangely absent from the intro of ''[[WesternAnimation/TeenageMutantNinjaTurtles2012 Teenage Mutant Ninja Turtles (2012)]]''. Instead, Shredder is shown standing with the [[{{Mutant}} mutants]] Dogpound and Fishface. No prizes for guessing what's going to happen to Bradford and Xever.
* An episode of the animated ''WesternAnimation/YoungJustice'' series has the team helped out by an arrow fired from the shadows. When they confront Green Arrow and accuse him of babysitting them and he proves it wasn't his arrow, they assume his sidekick, Speedy, is ready to join the team after storming out in the pilot. Yeah ... or maybe it's the female archer who appears in the opening credits of the show as a team member despite having not appeared in the actual show yet at that point.
** The team isnīt completely assembled in story before episode 6 but the intro shows the whole team since episode 1.
** Right before the show's logo is viewed, each ''Young Justice'' episode's opening contains a quick display of clips which previews events that occur later in whichever episode is airing at the moment which is at least less spoilery because of the rapid speed the images flash on the screen.
* In ''WesternAnimation/ReBoot'' every four episodes of season 3 had an opening sequence using clips from those four episodes. Naturally plot developments like Enzo's TimeSkip, the Saucy Mare's web armor, and Mainframe in ruins are spoiled. Averted with the {{Toonami}} broadcast, which replaced those openings with customized ones.
* The opening credits for ''WesternAnimation/TheSecretSaturdays'' features the Saturdays being charged by a quartet of villains. While one of them, Piecemeal, shows up relatively early in episode 4, the others are Eterno, a one-shot villain who doesn't show up for several more episodes, Rani Naga, who also doesn't appear until almost the end of the season, and Shoji Fuzen, who appears in episode 3, but is wearing blue samurai armor he won't don until many episodes later.
* ''WesternAnimation/JackieChanAdventures'':
** The intro for season 2 showed that Valmont would be possessed by Shendu for season 2.
** Even before Valmont and his three last Enforcers (Finn, Ratso and Chow) met Daolon Wong, the Season 3 intro revealed the Enforcers becoming Wong's Dark Chi Warriors and it did not feature Valmont, revealing the latter wouldn't appear as often as he did the previous story arcs.
** Season 4's first episode started with a PreviouslyOn showing scenes from when people other than Shendu controlled Shadowkhan and scenes from when Daolon Wong was [[BroughtDownToNormal depowered]]. Before the intro, Wong tried to regain control of Shadowkhan to make them break him out of prison but he instead awakens Tarakudo. Then the intro shows Tarakudo as that season's BigBad, the Enforcers working for him and Wong not being featured.
** Season 5's intro doesn't feature the Enforcers and, while Drago becoming the major antagonist was probably expected by the time the intro first started, his featured henchmen wouldn't appear before his third episode.
* ''WesternAnimation/AdventureTime''. Just pay attention to the first 5 seconds of the opening, and you will get spoiled with one of the biggest plot twist in the whole series-The fact that Ooo is actually the remains of Earth after a giant nuclear war.
* ''WesternAnimation/AvengersEarthsMightiestHeroes'' shows in its original intro that yes, Captain America survived getting thrown into an icy sea. His debut episode tried to make it seem ambiguous. It also shows Hank Pym becoming Giant-Man, an ability he doesn't demonstrate until his second appearance (chronologically speaking) Additionally, episodes set before the founding of the Avengers show eight members in the intro's TeamShot, revealing that Hawkeye won't remain an enemy of the heroes for long. The recaps attached to season two episodes also spoil the returns of certain antagonists by showing their previous appearances.