"Oh, yeah, I'm sure he's really gone. That's why the advertisements show him in about TWENTY more scenes that he wasn't in yet."Movie trailers are known to mislead, but sometimes they go in the opposite direction, giving away key plot points and twists (and sometimes what would have been a twist ending). The odds of this happening increase for the commercials aired after a movie's opening weekend. Of course, some of this depends on your definition of "spoiler". Given that a trailer consists mostly of clips from the movie itself, a fair bit of spoilerage, in this case footage from a later part in the movie, is often inevitable. There is also the matter of context. An action movie, for example, may preview a random fight scene between two characters, but when you actually see the movie itself and realize that the other dude the hero was fighting happened to be his best friend in the beginning (which may or not have also been part of that trailer), you realize in retrospect that the trailer's fight scene was actually a foreshadowing or Chekhov's Gun about the betrayal that occurs later. When a certain event is a foregone conclusion, like with The Film of the Book or films Based on a True Story, it's again debatable that it's really a spoiler. So if you read the examples below from a movie you haven't seen (either you have no intention of seeing it, or maybe you should reconsider continuing past this part), and find yourself thinking "I didn't even know that was a spoiler", don't worry about it. It should also be noted that in many cases, commercials released after a film's first week or so will contain a lot more spoilers than those leading up to the premiere. A related phenomenon can occur with DVD menu intro screens, which often include clips or montages of footage from the movie/episodes, thus potentially revealing them to the viewer out of context, before they have a chance to actually start playing the film proper. Often these will give away major plot points before the viewer has a chance to even start the film. These can be even more effective at spoiling the film's plot than trailers, since a viewer might plausibly be expected to go days between seeing a trailer and finally seeing the related movie, which might give them a chance to forget things from the trailer. With menu intro screens, on the other hand, the viewer is being shown clips from something that they are moments away from watching. Also related are the trailers which run immediately previous to the show you have already sat down to watch. Some shows give a "Next, on X:" segment, spoiling you on things you would just know in the next 30-60 minutes on a show you have already decided to watch. These are intended to pull in the new viewer, but can seem unfair to those already into a show as you are most likely to be already watching at the beginning of the episode. Can lead to Trailer Joke Decay. See also Spoiler Opening and Late-Arrival Spoiler. Compare The Namesake, when the title itself may be a spoiler. Or just see Spoiler Title. See Spoiled by the Merchandise for when plot points are spoiled by The Merch.
As this trope concerns spoilers, unmarked spoilers follow.
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- Almost anytime that a major character is going to die or there's going to be a major status quo change to The Verse the comic companies are bad about this and will announce the death of the major hero to the major news outlets in an effort to drum up sales. To make matters worse this is usually used to amplify stories that are already a bit spoiled by Tonight Someone Dies or Oh, and X Dies.
- The Clone Saga was such an example. Marvel announced several months in advance that the Spider-Clone would return with interviews in Wizard magazine and advertisements. During this time, the titles saw a "mysterious drifter" covered in shadows spying on Peter and visiting the graves of Parker's parents. It was obvious that it was the clone but the titles still treated it as some sort of huge mystery even to the point where, when they revealed the clone's face, it was played off as some surprise twist.
- Marvel tried to keep the plot of the infamous One More Day under wraps, but an interview with J.Michael Strazynski revealed exactly what would happen, who would be involved, and what the outcome would be. Despite this Marvel ran a promotional campaign for the story which gave readers a multitude of options as to who could help Spider-Man in his darkest hour, but thanks to the JMS interview, everyone knew it was Mephisto, they also knew the outcome resulted in the retconning of the Spider-Marraige in the 616 continuity.
- When Marvel announced that X-23 would be joining the cast of All-New X-Men, they effectively spoiled that she'd survive the events of the then-still running Avengers Arena series, ruining the supposed Anyone Can Die element. The writer of Arena even jokingly acknowledged this at New York Comic-Con.
- If you can believe it, the same convention also spoiled that Deathlocket, Hazmat, Anachronism, Cammi, and Cullen Bloodstone would survive when Marvel announced the Spiritual Successor, Avengers Undercover.
- In 2011 Marvel Comics was especially bad about this, saying that now they'll probably kill off a major character every quarter to raise sales:
- February saw the death of The Human Torch in the conclusion of the "Three" arc in Fantastic Four, the title of which heavily implied one of the titular four dying. While the story's title managed to avert the typical Oh, and X Dies nature of alot of "The Death of X" stories Marvel ruined any potential surprise by spoiling it to the press the day before the release.
- Early June saw the death of Bucky Barnes, the second Captain America, in Fear Itself #3 to the surprise of almost nobody as Marvel had already announced that original Captain America Steve Rogers would return to the uniform a month later (due to the movie). The only reason it didn't make any sort of media splash was because DC Comics one upped them the day before by announcing their reboot.
- Secret Wars (2015) was marketed on the premise that the Marvel Universe was being Killed Off for Real, and that nobody was sure what new universe would be taking it's place. The subsequent sneak peeks for books like All-New, All-Different Avengers and Invincible Iron Man, coupled with Word Of God confirmation that books like Ms. Marvel (2014) would continue, more or less confirmed that the "new" Marvel Universe was essentially the same one as the old one.
- This was solidified when Marvel released its new line-up of post-Secret Wars books, which spoiled a number of plot points about the ending, such as the Marvel Universe being restored, and characters like Old Man Logan joining the mainstream continuity.
- In 2013, DC Comics spoiled the death of Damian Wayne, the most recent Robin, days before it actually occurred in Batman Incorporated. This of course gave media outlets ample time to cover the story.
- The Darkwing Duck story "F.O.W.L. Disposition" has Steelbeak doing an Enemy Mine with Darkwing after F.O.W.L. goes too far. Whether this is believable or not in the first place is debatable, but every single cover shows him as an evil figure, including the back of the trade.
- After initially teasing it as one of the big mysteries of the All-New Marvel NOW! launch, Marvel informed the New York Times that the new Ms. Marvel would be a Muslim teenager named Kamala Khan.
- In yet another Marvel example, a released script for Mighty Avengers spoiled that the new Ronin was Blade a full eight months before the writer's intended reveal date.
- For those who have read the comic enough, the cover of The Walking Dead's Compendium One has quite a few spoilers in the illustrations the cover.
- A few weeks before Forever Evil kicked off, DC announced that Trinity War would see the Crime Syndicate of Earth 3 removing the Justice Leagues from the picture & taking over the Earth, with Lex Luthor's alliance of villains fighting back.
- Marvel basically confirmed that Hunger would end with a Failure Is the Only Option scenario by revealing that their next Crisis Crossover for the Ultimate line, Cataclysm, would see Galactus reaching Earth and beginning his assault. To those unaware, the entire premise of Hunger was that Silver Surfer and Rick Jones were desperately trying to stop Galactus before he could get to Earth.
- A plot point in Original Sin involved Nick Fury recruiting Black Panther, the Winter Soldier, Gamora, Doctor Strange, Emma Frost, Scott Lang, and The Punisher for a mysterious purpose. Eventually, it was revealed that Fury was dying of old age, and needed one of them to be his successor. Marvel treated the news as The Reveal and made it seem like a serious "Who will Fury choose?!" Cliffhanger, despite the fact that they'd already revealed that Fury's successor would be the Winter Soldier several weeks earlier.
- The same basic thing happened in Rick Remender's Captain America run. Marvel revealed on The Colbert Report that Sam Wilson would be the new Captain America, yet still treated it like a big secret in-story, and even tried to make it seem like Sam had died pulling a Heroic Sacrifice just before he emerged as the new Cap.
- A large plot point of Infinity War is that the heroes fighting the Magus have no idea what his end goal actually is. Both the heroes and the reader are meant to be surprised by the revelation. But if you glance at the back cover of the trade paperback, you'll find out instantly.
- It's a pain trying to find a surprise twist in Fan Fiction because so many writers think "summary" means "tell me everything that happens in the story". This is especially the case when the surprise twist involves a ship. We get such hilarity as "Which girl will Harry choose? Harry/Hermione."
- A summary that spoils the work it's based on from a piece of Death Note fanfiction: What if Rem never finished writing L's name in the Death Note? How will L cope with the loss of the only father figure he's ever had in his life? May contain spoilers. Just in case there was any doubt at all, the story is titled Watari.
- The very fact that "character death" is considered a required warning for fanfiction means that any fic that features a character's shocking death, or a character thought dead who turns up alive, will be spoiled from the get-go based on whether there is a warning or not. On the other hand, in Dark Fic, there could be more than one character death, or death might come as a surprise.
- Along the same lines of "character death" warnings, authors will often also put warnings for sex-related plot points such as Slash Pairings, Lemon scenes, and Mpreg. While this is nice for readers that find these things Squicky, it makes it all the less surprising when Mr. X and Mr. Y reveal themselves to be gay, have sex together, and end up pregnant as a result.
- In general, any fanfic tagged as "Tragedy" cannot possibly have a happy ending, by genre convention. So if you see it in the tags, you're near the end and it looks like the characters are going to survive, expect a Diabolus ex Machina.
- The summary of Thirty Hs is basically a summary of the events of the first few chapters.
- Fanfiction.Net put a massive TRON: Legacy spoiler in their "filter by character" view. This was before the film hit DVD.
- In the fic MVP, the accompanying image outright spoils its punchline (the identity of a character).
- In the Total Drama story, Legacy, the brief Introduction suggests pretty strongly that the story's "for want of a nail" premise will end badly for a certain character. Sure enough, it does.
Film - Animated
- Megamind probably had one of the worst offending trailers, in which it revealed that Metro Man was not dead and had simply given up superheroing. The entire film revolved around the fact that Megamind was trying to cope with having killed Metro Man.
- In Shrek 2, the nature of Puss N Boots (a cute little kitty who just happens to be a mercenary) is clearly meant to be a comedic twist, but the trailers practically made it the main selling point. Shrek the Third's merchandise spoiled the birth of the Shreklings (Shrek and Fiona's children) and the dragon/donkey hybrids (Donkey and Dragon's children), as well as the Distressed Damsel princesses going Action Girl.
- TV spots also showed Donkey as a white stallion, though they didn't show Shrek in his human form.
- Coraline. The trailer shows the scene where the Other Mother gives Coraline the buttons and sewing needles.
- The trailer for Up spoiled that Charles Muntz is the villain.
- Most trailers for Up were actually a remarkable aversion to this trope. Other than the presence of a talking dog and a floating balloon house, nothing else was really shown.
- In Paranorman the trailer spoils nearly every joke, even if it does not spoil the plot for the most part.
- Even worse, the Japanese trailer did spoil the plot.
- Meet the Robinsons had a trailer that showed the future Lewis in a group with the Robinson family, with his arm around Franny from one of the final scenes in the movie, making the big reveal completely predictable.
- The original trailer for Lady and the Tramp, all the way back in 1955, shows us that not only do Lady and Tramp get together, but have puppies to boot.
- A home video trailer for Titan A.E. showed the entire movie, start to finish, in order, including the final scenes of a new Earth being formed and the lead characters on it. Why bother to see the movie?
- Chicken Run: As shown in one of the TV commercials, the chickens manage to escape by making their own pedal powered plane!
- The trailer for Don Bluth's Anastasia spoils the fact that Anya is Anastasia, and then shows her in the palace, in formal attire, being addressed as "the princess" and "Your Highness." The previous spoiler isn't so bad, since it's to be expected, but did they have to show she's recognized as such?
- The trailer for Bartok the Magnificent spoils Ludmilla's transformation into a dragon.
- Toy Story 3 had trailers that spoiled that the new toys were the villains. And while they never explicitly stated who the Big Bad was, many viewers were able to tell just from what was shown (and if not that, then from the other marketing). In the later trailers it almost revealed that the real plot was an emotional rollercoaster.
- The Japanese trailer was even worse about this, as is showed pretty much every main plot point.
- The Lion King's trailer spoils most of the plot. Movie posters and the DVD cover show Mufasa's ghost as well.
- The DVD cover for How to Train Your Dragon not only shows Hiccup riding Toothless, but Astrid riding her new dragon as well. Astrid and the other young vikings didn't ride dragons until the Big Damn Heroes moment in the film's climax.
- How To Train Your Dragon 2's trailer takes no issue with spoiling The Reveal of Hiccup's mother.
- The trailers for the sequel to Hoodwinked stress the fact that Red and co. are trying to save two innocent kids from a wicked witch. Save for the one which shows said "innocent" children with creepy grins saying: "You've been hoodwinked! Too!"
- Watch ANY of the commercials for The Powerpuff Girls Movie and you've watched the whole thing (and this could've been why the movie didn't do so well). It also doesn't help that Cartoon Network aired these commercials on practically every commercial break when the movie came out.
- A TV spot for Wallace & Gromit: The Curse of the Were-Rabbit spoiled that the were-rabbit is Wallace, showing fuzzy fur popping out of his trademark sweater-vest. It even had the announcer say "What started as a little mistake became a big problem" over scenes of the mind-manipulator accident and said transformation scene.
- This official preview for Monsters University spoils the entire plot.
- The toy commercials for the BIONICLE's Glatorian Legends line of figures showed glimpses of the then-upcoming movie, The Legend Reborn. Among them, the very shot of the four heroes unleashing the final blast at the Skrall and Bone Hunter army, from the end of the climax! Website promos also spoiled Metus' transformation into a snake, thereby revealing that he was to be the traitor. This was also spoiled by the site's behind-the-scenes videos, which showed the actors recording lines — fans have narrowed the identity of the traitor down to Berix and Metus, and then the clips showed Berix's VA talking to the traitor...
- The DVD trailer for Kung Fu Panda 2 completely spoiled the fact that Po's biological father, and several other pandas, are still alive, which wasn't revealed until the last few seconds of the film.
- The trailer for Life's a Jungle: Africa's Most Wanted clearly shows the ending of the movie.
- A fan-edited trailer for Frozen parodies this. The video makes some Retraux attempts at emulating an ad from The '90s, with a love ballad playing in the background, some idents from Disney's VHS tapes serving as bookends, and a clip revealing some major points about the climax (the scene in which a freezing Anna tries to stop Hans from killing Elsa) appearing before the title card.
- Official trailers show some spoileriffic clips, such as Elsa bringing back summer and saving Olaf from melting. A more subtle example is Elsa giving Anna a hug, when Elsa had previously been too scared to approach, much less touch, Anna. It's also apparent on closer examination that this happens after Anna's aforementioned Heroic Sacrifice frees herself from the curse.
- One preview of The LEGO Movie showed bits from Emmet's vision, including a live-acted human hand. Also, Bad Cop's fate was revealed by his toy, released prior to the movie. The LEGO sets actually gave away many details, such as Bad Cop's parents getting frozen in glue or Uni-Kitty disguising herself as Business-Kitty, but not always the exact interpretation of the scenes.
- This Mulan trailer in which it shows the Emperor's big speech at the end, which in turn gives away big chunks of the movie. It even shows the scene with her turning around and all of China bowing to her.
- The TV commercials for 9 try their best to hide things by cutting rapidly from scene to scene, but they still manage to spoil 2's funeral, the destruction of the Fabrication Machine, the Cat Beast's death, and several of the dolls having their souls sucked out by the talisman. Geeze!
- The original BMG Video trailer for Mumfie's Quest shows Mr. and Mrs. Admiral being reunited, Whale being freed from a net by the electric eels and part of the scene where Secretary of Night gets turned into by the Cloak of Dreams.
- The trailers for The Thief and the Cobbler had clearly shown the entire plot of the film which included the three golden balls being stolen from the kingdom, the climatic battle with the main villain One-Eye and Tak and Princess Yum-Yum getting married at the end of the film.
- Near the end of the second trailer for The Book of Life, it happens in a brief second but one can see the Sanchez ancestors near the climax.]]
- A French trailer for Song of the Sea spoils the plot from beginning to end, even going as far as to include the last shot of the film.
- The UK advertising for Big Hero 6 reveals that Hiro wants to kill Yokai.
- The trailers for Strange Magic: The scene where Roland makes out with some kind of insect is frequently shown in trailers
- The trailer for An American Tail Fievel Goes West didn't spoil itself so much, but the fact that the trailer of the sequel movie was included at the beginning of every VHS release of the first movie after 1991 meant that it revealed the ending of the movie before it even started (beginning with Fievel riding a pigeon with his sister and asking if he could see more of America, spoiling that he finds his family).
- As far as Inside Out goes, whatever you do, if you don't want to be spoiled, stay away from the Japanese trailers!
- Some of the American trailers spoil the movie as well. Two notable examples were the clip where Joy rides in Bing Bong's rocket to the top and we can clearly see that he is not in it, and the scene where Joy and Sadness return to Headquarters.
- One of the trailers for The Sponge Bob Movie Sponge Out Of Water clearly shows Plankton as Plank-Ton.
- Many RPG adventures' cover art, seeking to entice buyers with action scenes, inadvertently spoil the nature of the scenario's Final Battle or a major mid-story menace.
- Parodied in The Demented Cartoon Movie, which opens with a mock trailer that does the exact opposite: it doesn't reveal anything about the movie it's advertising because it's heavily censored, and parts of it have been replaced with stuff like [Dialogue Missing] and [Title Missing].
- In RWBY's Black trailer, which serves as an introduction to the character Blake Belladonna, the background music is "From Shadows", a song with lyrics about people suffering Fantastic Racism from humans and planning their revenge. One of the plot points in the series involves the Faunus race being subjected to prejudice by humans (the lyrics in the trailer include "treated like a worthless animal", to make it clear the song is about them). This ends up spoiling, or at least strongly hinting at the fact that Blake is actually a Faunus disguised as a human, which is a twist revealed in the second-to-last episode of Volume 1.
- Parodied with the second trailer for The Way of the Metagamer 2: In Name Only, which intentionally reveals many, many plot twists.
- The trailer for the Homestuck video game kickstarter was aimed entirely at people who had already read the comic, so it contained spoilers for ALL the major updates as of the time it was made. At least the spoilers were flashing by so fast that new readers missed half of them and didn't know enough to recognize many of the others as spoilery.
- Persona 4TW Add-On lampshades the fact that the big plot 'twist' was given away on the cover:
Shadow Labrys: Labrys is a robot? Heavens to murgatroyd. What a complete and utter surprise...or it mighta been if it hadn't been given away on the ***ing box art...
- The trailer for That Guy with the Glasses' two-year anniversary special Kickassia had Spoony shouting "Oh my gosh! It's 3D Lee!"
- More like "the preview always spoils", unless the YouTube user has found a way to muck with the video thumbnail of a movie, YouTube will default it to the middle of the movie. If it's say, for a race and the course is known, you can tell at least midway who's winning.
- A variation: if you're going to watch a comedy video, you'd do well to avoid looking at the top comments. They almost always contain the funniest jokes.
- Parodied by College Humor in the hypothetical "If Movie Trailers Ruined Endings", where the trailer guy goes out of his way to spoil the endings and plot twists. Warning: spoilers for Fight Club, The Usual Suspects, and Reservoir Dogs. Also includes references to Luke, I Am Your Father and All There Is to Know About "The Crying Game".
- After part one of the Tabletop episode in which the horror RPG Dread was played, a "next time" trailer manages to spoil every major plot development in part two, rather ruining the tension that had been built up in part one.