-> ''"And I don't want to hear anything about "I don't believe in vampires" because '''I''' don't believe in vampires, but I believe in my own two eyes, and what '''I''' saw is fucking vampires!"''
->-- '''Seth Gecko''', ''FromDuskTillDawn''


Bob is a dyed-in-the-wool AgentScully. No matter what Alice tells him, he cannot accept that the truth is anything other than what his own common sense and experience tells him. Usually Alice, the hero, gets about as fed up as she can get with Bob, because Alice knows the truth and Bob. Will. Not. Listen. But then Bob runs into the monster, and suddenly finds that he can no longer pass it off as [[MenInBlack swamp gas from a weather balloon that was trapped in a thermal pocket and reflected the light from Venus]]. This shocks Bob into dropping the IdiotBall very quickly, and very heavily.

In the blink of an eye, he goes from being AgentScully to being AgentMulder.

Often PlayedForLaughs, since the former skeptic is almost always the most rational denier up to this point. Bonus points are given if the skeptic is also an ObstructiveBureaucrat who suddenly comes to his senses. This sort of occurrence also helps to kick the action along since now they can treat it as SeriousBusiness.

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!!Examples:

[[foldercontrol]]

[[folder: Anime and Manga ]]

* Kyon from ''SuzumiyaHaruhi'' initially thinks he's the OnlySaneMan after Nagato, Mikuru and Itsuki tell him the truth about their nature as well as Haruhi's. Then, Ryoko tries to stab him, traps him in a sealed dimension, turns her arms into energy tentacles, then Nagato arrives, survives getting impaled by twenty spears, chants a couple of spells, and Ryoko dissolves. Needless to say, he's afterwards quick to believe in whatever he sees or hears from these three.
* Chisame in MahouSenseiNegima goes from the {{only sane man}} into... the only sane man aware that the universe she lives in doesn't make sense at ''all'' but whatever. She gets cool age changing pills and magic hacking powers if she plays along, right?

[[/folder]]

[[folder: Film ]]

* The marines in ''{{Aliens}}'' were pretty much uniformly contemptuous of Ripley's description of the xenomorphs, refusing to believe that they could be as effectively lethal as she was saying. After all, they were rough, tough hardcore marines. Suffice to say they found religion pretty damned quick...
* Captain Lorenzo in ''DieHard 2: Die Harder'' believes John [=McClane=] that Colonel Stuart and Major Grant are working together only after [=McClane=] empties an automatic rifle (the same kind used by the soldiers in their attack against the terrorist) full of blanks at him. Lorenzo then calls in the cavalry.
* The page quote comes from ''FromDuskTillDawn'', where the fact that vamprires are real comes as a shock to everyone... but they get over it quickly.
* In ''TheSixthSense'', Doctor Malcolm Crowe believes that Cole Sear's problems stem from some sort of schizoaffective disorder... until he encounters something that turns his skepticism on its head.
* In ''Split Second'', Detective Dick Durkin refuses to believe that the SerialKiller he and Harley Stone (his partner) are tracking isn't actually a human being at all, but rather some kind of monster. And then he runs face-to-face with the thing.
--> '''Stone:''' Did you see him?
--> '''Durkin:''' "That wasnae a him, that was a fucking ''it''!"
** Seeing the monster also leads to Durbin's line, "We need to get bigger guns!", which under the circumstances was a very rational reaction.
* Doctor Peter Silberman encountered proof that [[CassandraTruth Sarah Connor wasn't crazy]] in ''{{Terminator}} 2: Judgment Day''. By ''TheSarahConnorChronicles'', he's living in isolation, away from major cities, raising dogs and keeping a healthy sense of paranoia about killer robots disguised as human beings. He even apologizes for not believing in {{Terminator}}s, not that it does him much good.

[[/folder]]

[[folder: Literature ]]

* Paksenarrion, from Elizabeth Moon's ''TheDeedOfPaksenarrion'', gradually changes from a skeptic to a believer to a full-blown Paladin of St. Gird; the Girdish medallion Canna left to Paks when Canna died gives the first signs when it starts warning Paks of dangers.
* At the end of ''[[{{Temeraire}} Victory of Eagles]]'', [[spoiler:General Wellesy declares himself a convert to the idea that the [[OurDragonsAreDifferent Dragons of the]] [[LivingShip Aerial Corps]] are in fact fully sentient... then declares that he "will be damned if they will become political" and manages to get [[HonorBeforeReason convicted traitor]] William Laurence's sentence of death commuted to Transportation to Australia on the condition that he take the most obvious prospective rabble-rouser (Temeraire himself) with him.]]

[[/folder]]

[[folder: Live Action TV ]]

* In the ''HowIMetYourMother'' episode "Matchmaker" Marshall and Lily (both a bit superstitious) are convinced their apartment is infested by a mutant combination of a cockroach and a mouse (which they dub a cockamouse). Robin plays the role of skeptic until the end when she finally sees the cockamouse herself ([[TakeOurWordForIt though we never do]]), and it's revealed that somehow the cockamouse can fly too.
* In ''TheXFiles'', [[AgentScully Dana Scully]] herself became the believer (with her new partner, Agent Doggett, as the skeptic) when [[AgentMulder Fox Mulder]] was PutOnABus.

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