[[caption-width-right:350:[-The trailer for the second season of our ''WebVideo/EchoChamber'' webshow.-] ]]

->''"Considering what we get, it's highly possible that Movie Trailer Voiceover Guy also sells billions of dollars worth of used cars and swampland real estate every year."''
-->-- '''''Website/TheAgonyBooth''''' [[http://www.agonybooth.com/recaps/Star_Trek__Insurrection.aspx on]] ''Film/StarTrekInsurrection''

If CoversAlwaysLie, trailers can, too. Sometimes TonightSomeoneDies or hyping TheReveal might not be enough. And with the Internet an open window these days for writers and directors to viewers' likes, dislikes, hopes, predictions, and {{Shipping}} loyalties, it's easy to know exactly how to bait fans into watching the next episode. Be careful not to believe everything you see, though, because as all FanVid makers know, any scene can be mixed-and-matched with another to look completely different from their real context.

Of course, TropesAreNotBad, as used correctly this can be a very clever way of averting TrailersAlwaysSpoil (by not mentioning or downplaying the real main plot) or HypeBacklash (by underselling the quality and letting word of mouth do the rest once it actually is out). But a few of us are a cynical bunch here at TV Tropes, and even the optimists among us know that in the worst examples it'll actually drive away those who would have otherwise enjoyed it, by completely confusing the relevant demographic.

Indeed, the creation of fake trailers to make a movie look like it's from a completely different genre has become one of the Internet's most beloved recent art forms, such as ''Film/TheShining'' as a [[http://www.youtube.com/watch?v=KmkVWuP_sO0 family-oriented romantic comedy]], the one that started it all, ''Film/TheTenCommandments'' as a [[http://www.youtube.com/watch?v=u1kqqMXWEFs chick flick]], or ''Film/MaryPoppins'' as a [[http://www.youtube.com/watch?v=2T5_0AGdFic slasher horror flick]].

Another way it can backfire is if you ''can't find'' enough good footage to make a decent trailer, GenreSavvy audiences can extrapolate just how bad the rest of the material must be.

[[PolishTheTurd If it sounds too good to be true, it usually is.]]

See [[http://www.cracked.com/article_17585_5-things-movie-trailers-need-stop-doing.html this list]] for more examples.

'''Specific types:'''
* SirNotAppearingInThisTrailer: Where a major actor doesn't show up in the trailer.
* LadyNotAppearingInThisGame: The opposite of the above, a character featuring prominently in the promotional materials doesn't really play a significant role.
* AdvertisedExtra: The guy seems to be a major character, but isn't.
* BillingDisplacement: The big-name actor plays a smaller part than they were 'supposed' to get.
* MissingTrailerScene: Where the trailer includes a scene that's been cut from the film.
* TonightSomeoneKisses: Taking a kiss out of context.
* CoversAlwaysLie
** ContemptibleCover: The illustration on the front of the book is oversexualized, more violent than you'd think, or just downright ''wrong.''
** SuperDickery: For some reason, the hero is acting like an asshole. Open the book to find out why!
* RealTrailerFakeMovie: Someone--most likely fans--has created a very convincing trailer for a movie which is unlikely to ever be released.
* TrailerSpoof: The trailer pretends to be for a different movie.

Often a form of MisaimedMarketing (it's been said that trailers reflect the movie the studio wanted to make, rather than the one that actually got made). If it's a TV show's TitleSequence that lies, those are BaitAndSwitchCredits.

!!Example Subpages
* NeverTrustATrailer/{{Anime}}
* Film
** NeverTrustATrailer/AnimatedFilms
** [[NeverTrustATrailer/{{Film}} Live-Action Films]]
* NeverTrustATrailer/LiveActionTV
* NeverTrustATrailer/VideoGames
* NeverTrustATrailer/WesternAnimation

!!Other Examples

[[folder: Advertising]]
* [[https://www.youtube.com/watch?v=18ya0-OZ58s This trailer]] for Snickers' Super Bowl ad leads you to believe that the guys in it really have Betty White on their team. [[https://www.youtube.com/watch?v=18ya0-OZ58s In the actual commercial]] she is called "Mike" and is told, "You play like Betty White!" She then eats a Snickers, and after a brief cutaway, she's replaced by a guy, proving that she only appears in the ad to support the {{tagline}}: "You're not you when you're hungry." [[spoiler:And so does Abe Vigoda.]]
* In the print ads for ''Son of {{Svengoolie}}'', if a film was called "X of {{Dracula}}" or "Franchise/{{Frankenstein}}'s X" they always ran a picture of Creator/BelaLugosi or Creator/BorisKarloff in costume as the title monster, even if they weren't in the film and it wasn't a UniversalHorror film.

[[folder: Comic Books]]
* Most of the hype for ''ComicBook/{{Earth2}}'' focused on that world's versions of the Big Three: Superman, Batman, and Wonder Woman. [[spoiler: [[FirstEpisodeSpoiler They're killed off in the first issue.]]]]
** DC also tried to spin the marketing for the series as a DarkerAndEdgier take on the Golden Age heroes, when it actually falls ''heavily'' on the "Idealistic" side of the SlidingScaleofIdealismVersusCynicism.
* When ''ComicBook/ForeverEvil'' was first anounced, DC billed it as Lex Luthor allying the various villains of the DCU to systematically take down the Justice Leagues & every other costume vigilante.
* The solicit introducing the new post-''Comicbook/FearItself'' [[Comicbook/TheAvengers Avengers]] line-up showed the teenage version of TheVision from ''YoungAvengers''. When the book actually dropped, the cover had been altered to instead show the classic, adult Vision. Presumably, this was to hide the fact that the Teen!Vision was being killed off in ''Comicbook/TheChildrensCrusade''.

[[folder: Fan Works]]
* The [[http://youtu.be/pWgIzraQWu4 trailer]] for ''WebAnimation/TurnaboutStorm'' shows [[VisualNovel/AceAttorney Phoenix Wright]] using his HotBlooded attitude to scare and intimidate [[WesternAnimation/MyLittlePonyFriendshipIsMagic Fluttershy]]. In the actual story, however, Fluttershy will only speak to Phoenix, [[ADogNamedDog since she thinks]] he's an actual kind of phoenix. [[HarsherInHindsight Though that part does manifest in the form of]] [[spoiler:Phoenix having to accuse Fluttershy to buy time]].
* In ''Fanfic/ThePrayerWarriors'', Chapter 10 of "The Evil Gods Part 2" is titled, ""Piper and Jerry goes to Washington DC to Find out Who the [[TheMole Trac]][[RougeAnglesOfSatin tor]] is and Defeat them Once and for All so they would not terrorized by them ever again for as long as God allows Time to go on For." The Prayer Warriors go to "[[FreudianSlip Washing Dick]]", but do not identify or defeat the traitor.
* The "previews" for ''Fanfic/MassEffectHumanRevolution'' will often have details changed from what actually happens.
* At the end of ''[[Fanfic/ShadowchasersBackwater Shadowchasers Twice Told Tales]]'', the author provides a rather vivid and dramatic "trailer" for ''Fanfiction/ShadowchasersBackwater'' that he admits should not be taken fully at face-value, claiming it contains many scenes where the contexts are probably either misinterpreted and/or incomplete.

[[folder: Theater]]
* When ''WaitingForGodot'' made its American debut in Miami, its marketing prominently featured stars Bert Lahr (The Cowardly Lion) and Tom Ewell (from ''The Seven-Year Itch''). Posters declared the play to be "the laugh sensation of two continents."

[[folder: Web Animation]]
* An egregious example is the [[http://www.newgrounds.com/portal/view/161186 trailer]] for the third ''WebAnimation/{{Arfenhouse}}'' movie. The [[http://www.newgrounds.com/portal/view/268387 actual movie]] turned out to be a few seconds long (not counting credits) and was a TakeThat to all the creator's fans who were nagging him to deliver on his promise of a sequel, though real sequels were eventually made.
* Parodied by Legendary Frog in the One Ring to Rule Them All: Special Edition, in which a "One Ring 3" Teaser includes shout outs to the movie Speed, the Incredible Hulk, and Charlie's Angels. Lampshaded by Sauron, who asks "Will any of this be in the actual movie?" His goblin assistant, Wayne, tells him that it'll all be cut in post-production.
* The season 7 trailer for ''Machinima/RedVsBlue'' showed both Church and Tex watching over the Red and Blue teams in Valhalla. Neither actually appears in that season. In fact, according to WordOfGod, [[spoiler:the "original" Church actually ''died'' at the end of the last season, so it seems likely Tex did as well.]] The difference here is that ''Red vs. Blue'' trailers are more like prelude episodes than actual previews. The season 7 trailer contained no footage from later episodes because it wasn't supposed to. Church and Tex seem to have been inserted into it to encourage WildMassGuessing as to what unseen role they may have had in the season.
* This ended up backfiring a bit for the initial episodes of ''WebAnimation/{{RWBY}}'', as early trailers made it look like a fairy tale-themed ''WebAnimation/DeadFantasy''.
** The first few episodes turned out to be more gradual and comedic with little fight scenes, causing some disappointment among fans. Creator/RoosterTeeth admitted they gave a pretty poor showing with that choice a little around the time of the series debut.
** They messed with the fans a little more deliberately with the trailer for Volume 2, altering scenes to disguise their true context. The most obvious is a shot of Ruby cradling Weiss's unconscious body; the trailer makes this look like a serious moment in a real battle, since they're both in their normal fighting clothes and Weiss is holding her sword. This seemingly promised fans that this volume would be DarkerAndEdgier than the first. However, this shot's counterpart in the show itself (same animation, but a different render) is played completely for laughs, because they're actually just participating in a food fight, wearing their school uniforms, and Weiss is just holding a swordfish instead of a real weapon. While Volume 2 ''did'' eventually deliver some pretty dark moments, and Weiss does get messed up pretty badly later on, it's ''Blake'' who eventually ends up cradling her, and in a completely different shot.

[[folder: Web Comics]]
* If you aren't familiar with Webcomic/SluggyFreelance then the first half of [[http://www.youtube.com/watch?v=OPoA5qAHqFU this video]] would have you convinced that the comic revolves around... Well a relatively minor side character. After that it breaks down into half a dozen tiny trailers not to be entirely trusted, before finally giving up and summarizing the comic in one sentence.
* Not a trailer, but a preview fragment. [[http://www.furaffinity.net/view/14904662/ These 2 panels]] give the impression that the heroes of ''Swords and Sausages'' are going to wake up in bed together, naked, under the same blanket. [[http://www.tigerknight.com/ss/8-20 The full page]] reveals that Tor was only shirtless and Silver slept fully dressed -- her hair partially obscured her vest, which has the same colour as Tor's pants.

[[folder:Web Original]]
* More of a case of Never Trust An End-of-Episode Preview: The end of {{LetsPlay/Chuggaaconroy}}'s semifinal episode of his LetsPlay of [[VideoGame/PokemonRubyAndSapphire Pokémon Emerald]] shows a dramatic reveal of [[spoiler:[[BrickJoke Pokemaniac Steve]] wanting a rematch,]] leaving a {{Cliffhanger}} for the finale. In the finale, [[spoiler:Chugga beats Steve in under half a minute and spends most of the actual episode fighting [[BonusBoss Steven]].]]
* Inverted by Screen Junkies' ''WebVideo/HonestTrailers'' which pick apart plot holes and mock the movies featured.
* ''WebVideo/AtopTheFourthWall'' ocassionally does this as a spoof "previously on" segment.
Dishonest as it may be, you gotta admit that it is kinda funny, too.