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* Long before ''Film/LiarLiar'', ''Series/TheTwilightZone'' had an episode in which a used car salesman buys a car its previous owner claims is haunted and finds himself supernaturally being forced to tell the truth, which is especially inconvenient in his line of work. Eventually, a local politician (who for obvious reasons doesn't want the car for himself either) helps him fob the car off as an all-American souvenir to a foreign politician who happens to be in town for a visit: [[spoiler: Nikita Khrushchev]].

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* Long before ''Film/LiarLiar'', ''Series/TheTwilightZone'' ''Series/TheTwilightZone1959'' had an episode ("The Whole Truth") in which a used car salesman buys a car its previous owner claims is haunted and finds himself supernaturally being forced to tell the truth, which is especially inconvenient in his line of work. Eventually, a local politician (who for obvious reasons doesn't want the car for himself either) helps him fob the car off as an all-American souvenir to a foreign politician who happens to be in town for a visit: [[spoiler: Nikita Khrushchev]].


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* ''Series/TheTwilightZone1985'': In "Examination Day", Dickie Jordan is given a truth serum to ensure that he answers all of the questions on the government intelligence test as truthfully as possible.


** Played with in ''ComicBook/FiftyTwo'' when Comicbook/LexLuthor kidnaps a [[BroughtDownToNormal depowered]] Clark Kent and gives him an experimental truth serum which his scientists explain is a synthetic recreation of Wonder Woman's magic lasso (See above). He then asks Clark, who broke the story about new hero Supernova, why it is that Superman [[ItsAllAboutMe is toying with Luthor by pretending to be someone else]]. Clark, {{laughing mad}}ly, informs Lex that he does not know who is under the Supernova mask, but he is absolutely certain of one thing, [[ClarkKenting that it is not Superman]]. Creator commentary in the trade-paperbacks points out that this scene, and perhaps the entire future path of DC comics, could have gone so differently if Luthor had simply known to ask ''the right question''.[[note]]Or not. Luthor has previously had supercomputers and other sources tell him that Clark is Superman, but [[CasandraTruth Luthor refuses to believe it]], feeling that a being as powerful as Superman would never lower himself to acting like an ordinary human. It seems nothing short of witnessing Clark using his Superman powers would convince Luthor of the truth.[[/note]]

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** Played with in ''ComicBook/FiftyTwo'' when Comicbook/LexLuthor kidnaps a [[BroughtDownToNormal depowered]] Clark Kent and gives him an experimental truth serum which his scientists explain is a synthetic recreation of Wonder Woman's magic lasso (See above). He then asks Clark, who broke the story about new hero Supernova, why it is that Superman [[ItsAllAboutMe is toying with Luthor by pretending to be someone else]]. Clark, {{laughing mad}}ly, informs Lex that he does not know who is under the Supernova mask, but he is absolutely certain of one thing, [[ClarkKenting that it is not Superman]]. Creator commentary in the trade-paperbacks points out that this scene, and perhaps the entire future path of DC comics, could have gone so differently if Luthor had simply known to ask ''the right question''.[[note]]Or not. Luthor has previously had supercomputers and other sources tell him that Clark is Superman, but [[CasandraTruth Luthor refuses to believe it]], feeling that a being as powerful as Superman would never lower himself to acting like an ordinary human. It seems nothing short of witnessing Clark using his Superman powers would convince Luthor of the truth.[[/note]]

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* In chapter 2 of ''Fanfic/ToCatchARaven'', Jinx is tricked into taking a truth serum while undergoing a burglary trial. She thought she was just being given a shot to nullify her metahuman powers for the trial.


* In the ''ComicBook/XWingSeries'', it is mentioned that [=CorSec=] officers undergo a chemical interrogation as part of their training. When it was done to Corran Horn, he ended up confessing to every childhood misdeed committed in his entire life, which would have been amusing even at the time had the interrogator not provided a transcript to his father (a fellow officer). While also amusing and somewhat disturbing to the reader, the existence of not only such drugs used by a police force but stronger ones available to groups like, oh, the Empire, makes one wonder about how Leia managed to hold up to an interrogation by Darth Vader, when the arguably less-vicious Ysanne Isard had methods that would (with only mild exaggeration) have Corran "spilling secrets his ''mother'' had forgotten while he was in the womb".

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* In the ''ComicBook/XWingSeries'', ''Literature/XWingSeries'', it is mentioned that [=CorSec=] officers undergo a chemical interrogation as part of their training. When it was done to Corran Horn, he ended up confessing to every childhood misdeed committed in his entire life, which would have been amusing even at the time had the interrogator not provided a transcript to his father (a fellow officer). While also amusing and somewhat disturbing to the reader, the existence of not only such drugs used by a police force but stronger ones available to groups like, oh, the Empire, makes one wonder about how Leia managed to hold up to an interrogation by Darth Vader, when the arguably less-vicious Ysanne Isard had methods that would (with only mild exaggeration) have Corran "spilling secrets his ''mother'' had forgotten while he was in the womb".

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* ''Series/TheMagicians2016'':
** Quentin drugs Dean Fogg to find out who Eliza really was. Dean Fogg admits that, out of forty time loops, Quentin has managed this in 27 of them.
** Eliot drugs the drinks of his inner circle to find out who's responsible for turning half of the castle's inhabitants into rats.
** One of the powers of the second Golden Key is that anyone holding it is compelled to tell the truth -- while holding it, [[spoiler:Rupert's boyfriend]] was compelled to confess his love.


* In ''Literature/VioletEyes'' and the sequel ''Literature/SilverEyes'', they have what's called =TrueFalse=, administered through a patch on your skin. While it doesn't force you to tell the truth, it does force you to talk, and will make you sweat if you tell a lie. While it can be used in court, a person can refuse to have it used on them.

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* In ''Literature/VioletEyes'' and the sequel ''Literature/SilverEyes'', they have what's called =TrueFalse=, [=TrueFalse=], administered through a patch on your skin. While it doesn't force you to tell the truth, it does force you to talk, and will make you sweat if you tell a lie. While it can be used in court, a person can refuse to have it used on them.

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* In ''Literature/VioletEyes'' and the sequel ''Literature/SilverEyes'', they have what's called =TrueFalse=, administered through a patch on your skin. While it doesn't force you to tell the truth, it does force you to talk, and will make you sweat if you tell a lie. While it can be used in court, a person can refuse to have it used on them.


* In an episode of ''WesternAnimation/TheSmurfs'', Gargamel captures the Smurfette and prepares a truth serum to force her to reveal the Smurf village's location. Unfortunately for him, Azrael steps on the potions book and accidentally turns the page to a potion of compulsive lying.

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* In an episode of ''WesternAnimation/TheSmurfs'', Gargamel captures the Smurfette and prepares a truth serum to force her to reveal the Smurf village's location. Unfortunately for him, Azrael steps on the potions book and accidentally turns the page to a potion of compulsive lying. In another episode, Papa Smurf gives a SnakeOilSalesman an ointment that acted like this to prevent him from ever lying about his products.


** Played with in ''ComicBook/FiftyTwo'' when Comicbook/LexLuthor kidnaps a [[BroughtDownToNormal depowered]] Clark Kent and gives him an experimental truth serum which his scientists explain is a synthetic recreation of Wonder Woman's magic lasso (See above). He then asks Clark, who broke the story about new hero Supernova, why it is that Superman [[ItsAllAboutMe is toying with Luthor by pretending to be someone else]]. Clark, {{laughing mad}}ly, informs Lex that he does not know who is under the Supernova mask, but he is absolutely certain of one thing, [[ClarkKenting that it is not Superman]]. Creator commentary in the trade-paperbacks points out that this scene, and perhaps the entire future path of DC comics, could have gone so differently if Luthor had simply known to ask ''the right question''.

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** Played with in ''ComicBook/FiftyTwo'' when Comicbook/LexLuthor kidnaps a [[BroughtDownToNormal depowered]] Clark Kent and gives him an experimental truth serum which his scientists explain is a synthetic recreation of Wonder Woman's magic lasso (See above). He then asks Clark, who broke the story about new hero Supernova, why it is that Superman [[ItsAllAboutMe is toying with Luthor by pretending to be someone else]]. Clark, {{laughing mad}}ly, informs Lex that he does not know who is under the Supernova mask, but he is absolutely certain of one thing, [[ClarkKenting that it is not Superman]]. Creator commentary in the trade-paperbacks points out that this scene, and perhaps the entire future path of DC comics, could have gone so differently if Luthor had simply known to ask ''the right question''.[[note]]Or not. Luthor has previously had supercomputers and other sources tell him that Clark is Superman, but [[CasandraTruth Luthor refuses to believe it]], feeling that a being as powerful as Superman would never lower himself to acting like an ordinary human. It seems nothing short of witnessing Clark using his Superman powers would convince Luthor of the truth.[[/note]]


** One rather brilliant episode, "Never Fear", later on had Scarecrow make a gas that rendered people subjected to it incapable of fear. While this didn't exactly stop them from lying, it pretty effectively removed their motivations for keeping any socially inconvenient truths to themselves, leading them to do and say all kinds of things they normally wouldn't for fear of the consequences. When Batman himself fell under the influence of the gas, we learned, among other things, that his code of honor [[ThouShaltNotKill against killing]] is driven largely by fear, either fear of regret after the fact, or possibly the fear that once he kills one person, he will go on to kill again and again.

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** One rather brilliant episode, "Never Fear", later on had Scarecrow make a gas that rendered people subjected to it incapable of fear. While this didn't exactly stop them from lying, it pretty effectively removed their motivations for keeping any socially inconvenient truths to themselves, leading them to do and say all kinds of things they normally wouldn't for fear of the consequences. When Batman himself fell under the influence of the gas, we learned, among other things, that his code of honor [[ThouShaltNotKill against killing]] is driven largely by fear, either fear of regret after the fact, or possibly the fear that once he kills one person, he will go on to [[ItGetsEasier kill again and again.again]].


* ''Battlelords of the 23rd Century'' supplement ''Lock-N-Load: The Battlelord's War Manual''. Truth serum puts the recipient in a highly suggestible state for two hours and is 95% effective in getting them to tell the truth.

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* ''Battlelords ''TabletopGame/{{Battlelords of the 23rd Century'' Century}}'' supplement ''Lock-N-Load: The Battlelord's War Manual''. Truth serum puts the recipient in a highly suggestible state for two hours and is 95% effective in getting them to tell the truth.

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* ''Battlelords of the 23rd Century'' supplement ''Lock-N-Load: The Battlelord's War Manual''. Truth serum puts the recipient in a highly suggestible state for two hours and is 95% effective in getting them to tell the truth.


# In many cases, the subject seems compelled to not only tell the truth, but to talk, period. Simply shutting up and not speaking, which isn't a lie, never occurs to them -- or, if they do try to shut up, they are physically unable to do so.

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# In many cases, the subject seems compelled to not only tell the truth, truth but to talk, period. Simply shutting up and not speaking, which isn't a lie, never occurs to them -- or, if they do try to shut up, they are physically unable to do so.



If the trope-generator is positioned more towards the "Science Fiction" end of the scale, invariably the injectee will start babbling about the KillerRabbit / NinjaPirateZombieRobot / LittleGreenMen, and be instantly dismissed as crazy or, at best, programmed to spout gibberish under interrogation.

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If the trope-generator is positioned more towards the "Science Fiction" end of the scale, invariably the injectee injected will start babbling about the KillerRabbit / NinjaPirateZombieRobot / LittleGreenMen, LittleGreenMen and be instantly dismissed as crazy or, at best, programmed to spout gibberish under interrogation.



* In the ''Franchise/{{Tintin}}'' story ''Flight 714'', Laszlo Carreidas is injected with a truth serum to try and pry the number of his SwissBankAccount from him. He, however, [[MistakenConfession starts confessing to every misdeed he has every done in his life]]. When BigBad Rastapopoulos is accidentally injected with the same serum, he and Carreidas [[HamToHamCombat get into an argument]] about [[EvilerThanThou who is the most evil]].

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* In the ''Franchise/{{Tintin}}'' story ''Flight 714'', Laszlo Carreidas is injected with a truth serum to try and pry the number of his SwissBankAccount from him. He, however, [[MistakenConfession starts confessing to every misdeed he has every ever done in his life]]. When BigBad Rastapopoulos is accidentally injected with the same serum, he and Carreidas [[HamToHamCombat get into an argument]] about [[EvilerThanThou who is the most evil]].evilest]].



* In ''Comicbook/{{Marvel 1602}}: [[Comicbook/FantasticFour Fantastick Four]]'', Sir Richard Reed used sodium thiopental (in gaseous form, which the victim inhales), which he's discovered over 300 years early, because he's Richard Reed.

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* In ''Comicbook/{{Marvel 1602}}: [[Comicbook/FantasticFour Fantastick Four]]'', Sir Richard Reed used sodium thiopental (in gaseous form, which the victim inhales), which he's discovered over 300 years early, early because he's Richard Reed.



* ''{{Series/Emergency}}'': John Gage is given truth serum in ''[[http://www.tbillingsemergencyfanfic.com/internationaincidentpart1.htm International Incident]]'' as a foriegn diplomat tries to torture him into revealing where his daughter has gone. As is common in these fics, John has a negative reaction to the high dose and is only saved because Roy and the cavalry arrive to free him.

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* ''{{Series/Emergency}}'': John Gage is given truth serum in ''[[http://www.tbillingsemergencyfanfic.com/internationaincidentpart1.htm International Incident]]'' as a foriegn foreign diplomat tries to torture him into revealing where his daughter has gone. As is common in these fics, John has a negative reaction to the high dose and is only saved because Roy and the cavalry arrive to free him.



* The factuality of truth serums is discussed in ''Film/AntManAndTheWasp'' when Sonny Burch's thugs use one on Luis, prompting an argument about whether it's a truth serum or not. Luis of course is already a MotorMouth, so it's not as helpful as Burch would like. [[spoiler:At the end of the movie, the tables are turned and Burch and his men confess their crimes to the police under the drug's effects.]] The question of whether it should be considered a "truth serum" is also brought out, with Burch's thug insisting that there's no such thing and it should be called something else; [[spoiler:he ends up coming around to [[InsistentTerminology Luis's terminology]] when he gets a dose of it at the end.]]

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* The factuality of truth serums is discussed in ''Film/AntManAndTheWasp'' when Sonny Burch's thugs use one on Luis, prompting an argument about whether it's a truth serum or not. Luis Luis, of course course, is already a MotorMouth, so it's not as helpful as Burch would like. [[spoiler:At the end of the movie, the tables are turned and Burch and his men confess their crimes to the police under the drug's effects.]] The question of whether it should be considered a "truth serum" is also brought out, with Burch's thug insisting that there's no such thing and it should be called something else; [[spoiler:he ends up coming around to [[InsistentTerminology Luis's terminology]] when he gets a dose of it at the end.]]



* The ''Literature/HarryPotter'' books feature a magical truth serum called Veritaserum. It's mentioned quite a lot, but the only time it's actually used was on an unconscious [[spoiler:Barty Crouch Jr., disguised as Mad-Eye Moody]]. However, [[WordOfGod according to J. K. Rowling,]] all magical truth serums are fallible when used on a victim who is prepared for it, and its effects can be counteracted. Of course this still makes you wonder why they didn't administer it to more unconscious people, as ''that'' worked entirely well. In [[Film/HarryPotterAndTheOrderOfThePhoenix the film version]] of ''[[Literature/HarryPotterAndTheOrderOfThePhoenix Order of the Phoenix]]'', Umbridge uses veritaserum successfully on Cho Chang, off-screen. [[AdaptationDistillation This serves to streamline the plot,]] giving Harry a reason to break up with Cho without having her ultimately responsible for the betrayal. It also writes out Marietta Edgecombe, the original (serum-less) tattle-tale, as well as Hermione's "SNEAK" jinx.

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* The ''Literature/HarryPotter'' books feature a magical truth serum called Veritaserum. It's mentioned quite a lot, but the only time it's actually used was on an unconscious [[spoiler:Barty Crouch Jr., disguised as Mad-Eye Moody]]. However, [[WordOfGod according to J. K. Rowling,]] all magical truth serums are fallible when used on a victim who is prepared for it, and its effects can be counteracted. Of course course, this still makes you wonder why they didn't administer it to more unconscious people, as ''that'' worked entirely well. In [[Film/HarryPotterAndTheOrderOfThePhoenix the film version]] of ''[[Literature/HarryPotterAndTheOrderOfThePhoenix Order of the Phoenix]]'', Umbridge uses veritaserum successfully on Cho Chang, off-screen. [[AdaptationDistillation This serves to streamline the plot,]] giving Harry a reason to break up with Cho without having her ultimately responsible for the betrayal. It also writes out Marietta Edgecombe, the original (serum-less) tattle-tale, as well as Hermione's "SNEAK" jinx.



** However, as fast-penta is a drug, not everyone reacts the same way. Most exceptions are fatal allergies. People whose work involves sensitive or classified information can have the allergy artificially induced, unless their lives are deemed more important than the secrets they know. Bujold often uses artificial allergies to keep the characters from learning too much too soon. Another exception to the norm is Miles Vorkosigan. Due to his screwed up body chemistry, fast-penta induces a temporary mania in addition to the typical long-windedness. He uses this to his advantage, forcing himself to be discursive and bouncing off the walls reciting ''[[Creator/WilliamShakespeare Richard III]]'' until his interrogators give up and put him back in his cell (And he still doesn't shut up until he finishes reciting the entire play, to his cellmate's discomfort).

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** However, as fast-penta is a drug, not everyone reacts the same way. Most exceptions are fatal allergies. People whose work involves sensitive or classified information can have the allergy artificially induced, induced unless their lives are deemed more important than the secrets they know. Bujold often uses artificial allergies to keep the characters from learning too much too soon. Another exception to the norm is Miles Vorkosigan. Due to his screwed up body chemistry, fast-penta induces a temporary mania in addition to the typical long-windedness. He uses this to his advantage, forcing himself to be discursive and bouncing off the walls reciting ''[[Creator/WilliamShakespeare Richard III]]'' until his interrogators give up and put him back in his cell (And he still doesn't shut up until he finishes reciting the entire play, to his cellmate's discomfort).



** Unknown to Heralds in most time periods, the spell works by attracting a (previously bound to Heralds) non-sentient air elemental to the subject, and then inducing it to possess him or her. Based on the more detailed description, stage one is actually a slightly more focused polygraph, and there's nothing to prove it lacks the same weaknesses. We tend to see the truth spell used against people lying to hide powerful and violent feelings, and the spell tends not to show up in time periods where people who can resist possession are present.
* ''[[Literature/TheExecutioner Phoenix Force]]'' uses scopalomine, administered by its [[TheMedic team medic]] Calvin James due to the risk of possible heart failure. In one novel the prisoner has a heart condition, so they try hypnosis instead, getting enough details to work out the information they're looking for. In another some mooks who were injured in the fight that led to their capture start babbling their cover stories after they're injected with an anesthesia. This causes Phoenix Force to realise they're professional intelligence agents who have been given hypnotically-induced cover stories in case they were injected with a truth serum.

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** Unknown to Heralds in most time periods, the spell works by attracting a (previously bound to Heralds) non-sentient air elemental to the subject, subject and then inducing it to possess him or her. Based on the more detailed description, stage one is actually a slightly more focused polygraph, and there's nothing to prove it lacks the same weaknesses. We tend to see the truth spell used against people lying to hide powerful and violent feelings, and the spell tends not to show up in time periods where people who can resist possession are present.
* ''[[Literature/TheExecutioner Phoenix Force]]'' uses scopalomine, administered by its [[TheMedic team medic]] Calvin James due to the risk of possible heart failure. In one novel the prisoner has a heart condition, so they try hypnosis instead, getting enough details to work out the information they're looking for. In another another, some mooks who were injured in the fight that led to their capture start babbling their cover stories after they're injected with an anesthesia. This causes Phoenix Force to realise they're professional intelligence agents who have been given hypnotically-induced cover stories in case they were injected with a truth serum.



* Subverted in Creator/ThomasPynchon's ''Literature/GravitysRainbow''. Slothrop is administered sodium amytal twice in the course of the narrative. In both cases he is reduced to surreal babblings and squicky nightmares instead of volunteering information.

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* Subverted in Creator/ThomasPynchon's ''Literature/GravitysRainbow''. Slothrop is administered sodium amytal twice in the course of the narrative. In both cases cases, he is reduced to surreal babblings and squicky nightmares instead of volunteering information.



On another occasion the heroes capture TheDragon and inject them with a conveniently-left-lying-around dose. The information they obtain turns out to be false, but their boss is quick to point out that the dose was ''too'' conveniently left lying around, and for all they knew they were injecting them with distilled water. Later, it's discovered that TheDragon is [[spoiler:a humaniform android]], and it could have been the real thing.

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On another occasion occasion, the heroes capture TheDragon and inject them with a conveniently-left-lying-around dose. The information they obtain turns out to be false, but their boss is quick to point out that the dose was ''too'' conveniently left lying around, and for all they knew they were injecting them with distilled water. Later, it's discovered that TheDragon is [[spoiler:a humaniform android]], and it could have been the real thing.



* In the first ''Literature/{{Quiller}}'' spy novel, the title character is injected with a drug designed to make him high and therefore talkative; they get some facts out of the subsequent WordSalad, but not enough. Quiller does reveal too much about his obsession for a girl he's met however, so they decide to use that angle to force his co-operation.

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* In the first ''Literature/{{Quiller}}'' spy novel, the title character is injected with a drug designed to make him high and therefore talkative; they get some facts out of the subsequent WordSalad, but not enough. Quiller does reveal too much about his obsession for a girl he's met met, however, so they decide to use that angle to force his co-operation.



* ''Literature/TheElminsterSeries'': The wizard who accosts Elminster outside his village in the hills herding sheep places him under a {{mind control}} spell, and uses it to make him answer questions truthfully. Thankfully he doesn't realize that Elminster is the son of the man he's looking for (a [[KingIncognito hidden prince]] who's being targeted over his claim to the throne) or he'd have been killed as well. As it is, he still orders Elminster to [[PsychicAssistedSuicide run off a cliff]]. Fortunately Elminister has a latent magical ability he uses to save himself. Later he uses it himself on another mage to compel the truth from him.
* ''Piège pour un homme seul'': In fact it was just a provocation.

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* ''Literature/TheElminsterSeries'': The wizard who accosts Elminster outside his village in the hills herding sheep places him under a {{mind control}} spell, and uses it to make him answer questions truthfully. Thankfully he doesn't realize that Elminster is the son of the man he's looking for (a [[KingIncognito hidden prince]] who's being targeted over his claim to the throne) or he'd have been killed as well. As it is, he still orders Elminster to [[PsychicAssistedSuicide run off a cliff]]. Fortunately Fortunately, Elminister has a latent magical ability he uses to save himself. Later he uses it himself on another mage to compel the truth from him.
* ''Piège pour un homme seul'': In fact fact, it was just a provocation.



* ''Literature/SwordOfTruth'': This is the purpose of the Confessor's touch. It causes the person touched to feel love toward the Confessor so overwhelmingly that they will tell them anything which they did, or do anything else asked. Thus, it's used to insure a person accused of capital crimes is really guilty, gaining true confessions.
* In ''Literature/{{Pact}}'', being magically enslaved can have this affect if the master so wishes. When [[spoiler: Rose]] is unwillingly bound by [[HorsemenOfTheApocalypse Conquest]] (who unfortunately avoids asking her specific questions that would leave her some ExactWords wriggle-room), he commands her to "tell me everything you don't want me to know", forcing her to explain exactly how she and her allies were planning to outsmart him.

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* ''Literature/SwordOfTruth'': This is the purpose of the Confessor's touch. It causes the person touched to feel love toward the Confessor so overwhelmingly that they will tell them anything which they did, or do anything else asked. Thus, it's used to insure ensure a person accused of capital crimes is really guilty, gaining true confessions.
* In ''Literature/{{Pact}}'', being magically enslaved can have this affect effect if the master so wishes. When [[spoiler: Rose]] is unwillingly bound by [[HorsemenOfTheApocalypse Conquest]] (who unfortunately avoids asking her specific questions that would leave her some ExactWords wriggle-room), he commands her to "tell me everything you don't want me to know", forcing her to explain exactly how she and her allies were planning to outsmart him.



* Long before ''Film/LiarLiar'', ''Series/TheTwilightZone'' had an episode in which a used car salesman buys a car its previous owner claims is haunted, and finds himself supernaturally being forced to tell the truth, which is especially inconvenient in his line of work. Eventually, a local politician (who for obvious reasons doesn't want the car for himself either) helps him fob the car off as an all-American souvenir to a foreign politician who happens to be in town for a visit: [[spoiler: Nikita Khrushchev]].

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* Long before ''Film/LiarLiar'', ''Series/TheTwilightZone'' had an episode in which a used car salesman buys a car its previous owner claims is haunted, haunted and finds himself supernaturally being forced to tell the truth, which is especially inconvenient in his line of work. Eventually, a local politician (who for obvious reasons doesn't want the car for himself either) helps him fob the car off as an all-American souvenir to a foreign politician who happens to be in town for a visit: [[spoiler: Nikita Khrushchev]].



* ''Series/BurnNotice'' has a relatively realistic go at showing the real life effects of a 'truth serum'. James injects Michael with a hallucinogenic drug that makes it harder for Mike to lie and/or withhold information.
* The ''Series/{{Charmed|1998}}'' episode "The Truth Is Out There And It Hurts" has Prue casting a 24-hour "Truth Spell" which results in anyone who is asked a direct question having to answer with the truth. Unfortunately it also meant if anyone asked one of the sisters a question, ''they'' would have to answer with the truth.
** Paige later uses the same spell, and the effects are very different. The "applies to everyone under this roof" and "the caster must answer honestly" aspects are dropped. The boyfriend she used it for (to see how he'd react to the family secret, since the spell comes with automatic LaserGuidedAmnesia) provided some extra information [[spoiler: [[YourCheatingHeart he's married]]]], but was also able to lie. He just had to quickly correct himself.

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* ''Series/BurnNotice'' has a relatively realistic go at showing the real life real-life effects of a 'truth serum'. James injects Michael with a hallucinogenic drug that makes it harder for Mike to lie and/or withhold information.
* The ''Series/{{Charmed|1998}}'' episode "The Truth Is Out There And It Hurts" has Prue casting a 24-hour "Truth Spell" which results in anyone who is asked a direct question having to answer with the truth. Unfortunately Unfortunately, it also meant if anyone asked one of the sisters a question, ''they'' would have to answer with the truth.
** Paige later uses the same spell, and the effects are very different. The "applies to everyone under this roof" and "the caster must answer honestly" aspects are dropped. The boyfriend she used it for (to see how he'd react to the family secret, secret since the spell comes with automatic LaserGuidedAmnesia) provided some extra information [[spoiler: [[YourCheatingHeart he's married]]]], married]]]] but was also able to lie. He just had to quickly correct himself.



** ''Series/StarTrekDeepSpaceNine'' also revealed in some episodes that while the Vulcan mind meld can be used to extract information from unwilling subjects, some of the Cardassians (Gul Dukat, for one) had a conditioning technique to block the Vulcans from using it on them. Also, one alien government had developed a means to alter and block its agents' memories while they were working undercover so that they would actually ''believe'' they were who they were making themselves out to be if anyone tried using any of these methods on them, meaning their interrogators would get nothing useful out of them even though they were being completely honest.

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** ''Series/StarTrekDeepSpaceNine'' also revealed in some episodes that while the Vulcan mind meld mind-meld can be used to extract information from unwilling subjects, some of the Cardassians (Gul Dukat, for one) had a conditioning technique to block the Vulcans from using it on them. Also, one alien government had developed a means to alter and block its agents' memories while they were working undercover so that they would actually ''believe'' they were who they were making themselves out to be if anyone tried using any of these methods on them, meaning their interrogators would get nothing useful out of them even though they were being completely honest.



* ''Series/{{UFO}}'' episode "Computer Affair". The "GL-7 serum", one of the "new anodynes", is used on a captured alien at Straker's orders to lower his resistance so he'll talk. Unfortunately it kills him instead, due to either his different biology or him somehow [[InvoluntarySuicideMechanism committing suicide to prevent himself from talking]].

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* ''Series/{{UFO}}'' episode "Computer Affair". The "GL-7 serum", one of the "new anodynes", is used on a captured alien at Straker's orders to lower his resistance so he'll talk. Unfortunately Unfortunately, it kills him instead, due to either his different biology or him somehow [[InvoluntarySuicideMechanism committing suicide to prevent himself from talking]].



** The Scarrans are also mildly psionic and can use their powers to force truth out of people, though it can still be an evasive half-truth. In the same series of episodes, when John is captured attempting to free Aeryn, he claims that he decided to because Aeryn was prettier than the nurse, and that once he had freed her he was going to have lots of sex and babies with her.

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** The Scarrans are also mildly psionic and can use their powers to force the truth out of people, though it can still be an evasive half-truth. In the same series of episodes, when John is captured attempting to free Aeryn, he claims that he decided to because Aeryn was prettier than the nurse, nurse and that once he had freed her he was going to have lots of sex and babies with her.



* ''Series/{{Supernatural}}'' has an episode in which anyone who asks for the truth gets it, in full, from everyone who talks to them. In this case it's not due to a truth serum but a truth curse.

to:

* ''Series/{{Supernatural}}'' has an episode in which anyone who asks for the truth gets it, in full, from everyone who talks to them. In this case case, it's not due to a truth serum but a truth curse.



* ''Series/IDreamOfJeannie'' plays with this. Tony gets sick of Jeannie doing him favors and commands her that the next time he asks for anything, she deny it. He ends up getting kidnapped by terrorists, but due to his previous command Jeannie can't directly rescue him. The terrorists try to give him truth serum to make him talk, so Jeannie casts a spell on him that forces him to speak in a different language when under the effect of the serum.

to:

* ''Series/IDreamOfJeannie'' plays with this. Tony gets sick of Jeannie doing him favors and commands her that the next time he asks for anything, she deny it. He ends up getting kidnapped by terrorists, terrorists but due to his previous command command, Jeannie can't directly rescue him. The terrorists try to give him truth serum to make him talk, so Jeannie casts a spell on him that forces him to speak in a different language when under the effect of the serum.



** In "Aletheia", a government agent gives Root alternating injections of a stimulant in one arm and a sedative in the other. This is a [[ShownTheirWork real technique]] developed by the CIA MKULTRA project. It failed spectacularly on Root, and apparently wasn't so hot for the CIA either (it was supposed to induce a cooperative trance, but as often as not the subject would just fall asleep).
** And in "4C", Shaw spikes Hersh's drink with scopalomine, which has the additional benefit that [[WhatDidIDoLastNight he won't remember what happened]]. Hersh not only reveals the information Shaw wants, the cold-blooded ImplacableMan also reveals his concern that his former protege whom he tried to murder is being treated well by her new employer. [[PetTheDog D'awwww...]]

to:

** In "Aletheia", a government agent gives Root alternating injections of a stimulant in one arm and a sedative in the other. This is a [[ShownTheirWork real technique]] developed by the CIA MKULTRA project. It failed spectacularly on Root, Root and apparently wasn't so hot for the CIA either (it was supposed to induce a cooperative trance, but as often as not the subject would just fall asleep).
** And in "4C", Shaw spikes Hersh's drink with scopalomine, which has the additional benefit that [[WhatDidIDoLastNight he won't remember what happened]]. Hersh not only reveals the information Shaw wants, but the cold-blooded ImplacableMan also reveals his concern that his former protege whom he tried to murder is being treated well by her new employer. [[PetTheDog D'awwww...]]



* In an episode of ''Series/HerculesTheLegendaryJourneys'', the heroes were searching for the Sword of Veracity, which made whomever held it incapable of lying. Iolaus and the GirlOfTheWeek found themselves in a cave full of swords, so Iolaus grabbed the first sword he could and said she was the ugliest girl he'd ever seen, explaining that the Sword should not allow him to lie. The duo then proceeded to do the same with each sword in turn ("My name is Hercules and I have two heads." "This is a rutabaga.") until she found the right one through a CssandraTruth moment, warning Iolaus of the monster behind him.

to:

* In an episode of ''Series/HerculesTheLegendaryJourneys'', the heroes were searching for the Sword of Veracity, which made whomever whoever held it incapable of lying. Iolaus and the GirlOfTheWeek found themselves in a cave full of swords, so Iolaus grabbed the first sword he could and said she was the ugliest girl he'd ever seen, explaining that the Sword should not allow him to lie. The duo then proceeded to do the same with each sword in turn ("My name is Hercules and I have two heads." "This is a rutabaga.") until she found the right one through a CssandraTruth moment, warning Iolaus of the monster behind him.



* ''Series/TerminatorTheSarahConnorChronicles'' : During the episode "Some Must Watch While Some Must Sleep," Sarah gets injected with something, and her assailant tells her she'll be talking within three hours.

to:

* ''Series/TerminatorTheSarahConnorChronicles'' : ''Series/TerminatorTheSarahConnorChronicles'': During the episode "Some Must Watch While Some Must Sleep," Sarah gets injected with something, and her assailant tells her she'll be talking within three hours.



* ''Series/LegendOfTheSeeker'': This is the purpose of the Confessor's touch. It causes the person touched to feel love toward the Confessor so overwhelmingly that they will tell them anything which they did, or do anything else asked. Thus, it's used to insure a person accused of capital crimes is really guilty, gaining true confessions.

to:

* ''Series/LegendOfTheSeeker'': This is the purpose of the Confessor's touch. It causes the person touched to feel love toward the Confessor so overwhelmingly that they will tell them anything which they did, or do anything else asked. Thus, it's used to insure ensure a person accused of capital crimes is really guilty, gaining true confessions.



** The spell ''Zone of Truth'' prevented anyone in it from knowingly lying. However, they are not compelled to answer, and can be evasive if they wish.

to:

** The spell ''Zone of Truth'' prevented anyone in it from knowingly lying. However, they are not compelled to answer, answer and can be evasive if they wish.



* There are a few in ''TabletopGame/{{GURPS}}''; the Truth potion from ''Magic'' as well as Sodium Pentothal and Sodium Amytal in ''High-Tech''. There's also the standard "Compel Truth" spell, and an equivalent psychic ability. Again, despite the name it only prevents victims from lying (if it works...) It does not force them to say anything.

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* There are a few in ''TabletopGame/{{GURPS}}''; the Truth potion from ''Magic'' as well as Sodium Pentothal and Sodium Amytal in ''High-Tech''. There's also the standard "Compel Truth" spell, spell and an equivalent psychic ability. Again, despite the name name, it only prevents victims from lying (if it works...) It does not force them to say anything.



* Subverted during the first ''VideoGame/SplinterCell'' game; at the end of a mission you are required to knock out a security guard between your extraction vehicle. Two of your allies keep him occupied by talking about interrogation techniques, the one mentioned involves a 'truth serum' that leaves them too drugged out to actually give up anything useful when they talk... but also too drugged out to remember what they actually said. You then convince them they already told you what you wanted to know, and thereby manipulate them into actually telling you.

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* Subverted during the first ''VideoGame/SplinterCell'' game; at the end of a mission mission, you are required to knock out a security guard between your extraction vehicle. Two of your allies keep him occupied by talking about interrogation techniques, the one mentioned involves a 'truth serum' that leaves them too drugged out to actually give up anything useful when they talk... but also too drugged out to remember what they actually said. You then convince them they already told you what you wanted to know, and thereby manipulate them into actually telling you.



* Discussed in ''VideoGame/MetalGearSolid'': after [[spoiler: Naomi]] is captured as a spy, Campbell mentions that the interrogation (already under a severe time constraint) isn't going well, and they don't have any sodium pentathol on the base. It's doubtful it would work on it's own, but the implication is that they're going to employed EnhancedInterrogationTechniques.

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* Discussed in ''VideoGame/MetalGearSolid'': after [[spoiler: Naomi]] is captured as a spy, Campbell mentions that the interrogation (already under a severe time constraint) isn't going well, and they don't have any sodium pentathol on the base. It's doubtful it would work on it's its own, but the implication is that they're going to employed EnhancedInterrogationTechniques.



* In ''Webcomic/TheOrderOfTheStick'', Zone of Truth works exactly like this. Taking insipiration from Burlew's work, Zone of Truth has the same effect in ''Webcomic/MurphysLaw''.
* Dr Auditore, the prison psychiatrist in ''Webcomic/StringTheory'', tries it on Dr Schtein. It [[http://www.stringtheorycomic.com/comics/chapter-three/page-thirtytwo/ backfires]].

to:

* In ''Webcomic/TheOrderOfTheStick'', Zone of Truth works exactly like this. Taking insipiration inspiration from Burlew's work, Zone of Truth has the same effect in ''Webcomic/MurphysLaw''.
* Dr Dr. Auditore, the prison psychiatrist in ''Webcomic/StringTheory'', tries it on Dr Dr. Schtein. It [[http://www.stringtheorycomic.com/comics/chapter-three/page-thirtytwo/ backfires]].



* An episode of ''WesternAnimation/KimPossible'' had Kim hit by a Truth Ray, with the full effect of the entire trope: not only could she not lie, she was compelled to say anything and everything, in [[TooMuchInformation far more detail than was needed]]. She confessed a crush to members of the sports teams, and [[DinnerWithTheBoss told her dad's bosses]] everything her dad found annoying about them (one tells ''very bad'' jokes, one won't stop talking about his home country, and one obviously wears a wig). She ended up covering her mouth to suppress the truth compulsion. Ron, who was hit by the same ray, instead becomes more confident and popular. He does things like admitting to Mr. Barkin that not only did he not read the assigned book, but that it was boring and dumb, earning Barkin's respect by stating an opinion he'd secretly shared, and winning the heart of a beautiful girl by talking about the beauty of her eyes.
* Subverted in "The Incredible Mr. Brisby" episode of ''WesternAnimation/TheVentureBrothers'', when Dr. Venture is given a truth serum to reveal what his research on cloning has yielded. Apparently, it has an antagonistic reaction with one of the multitude of pills Venture is taking, and makes him think he is some sort of country milk maid and recite lines from ''Film/RearWindow'' (which might actually be a realistic reaction).

to:

* An episode of ''WesternAnimation/KimPossible'' had Kim hit by a Truth Ray, with the full effect of the entire trope: not only could she not lie, but she was also compelled to say anything and everything, in [[TooMuchInformation far more detail than was needed]]. She confessed a crush to members of the sports teams, and [[DinnerWithTheBoss told her dad's bosses]] everything her dad found annoying about them (one tells ''very bad'' jokes, one won't stop talking about his home country, and one obviously wears a wig). She ended up covering her mouth to suppress the truth compulsion. Ron, who was hit by the same ray, instead becomes more confident and popular. He does things like admitting to Mr. Barkin that not only did he not read the assigned book, but that it was boring and dumb, earning Barkin's respect by stating an opinion he'd secretly shared, and winning the heart of a beautiful girl by talking about the beauty of her eyes.
* Subverted in "The Incredible Mr. Brisby" episode of ''WesternAnimation/TheVentureBrothers'', when Dr. Venture is given a truth serum to reveal what his research on cloning has yielded. Apparently, it has an antagonistic reaction with one of the multitude of pills Venture is taking, and makes him think he is some sort of country milk maid milkmaid and recite lines from ''Film/RearWindow'' (which might actually be a realistic reaction).



* In an episode of ''WesternAnimation/RexTheRunt'' Bob and Rex start drinking what they assume is a truth serum (it was actually orange juice) and, presumably due to their [[YourMindMakesItReal minds making it real]] started admitting to old lies they'd told in the past, revealing secrets and plenty of assorted lampshading ("Why do you wear that {{eyepatch|OfPower}} anyway? You have two eyes!"). However at the end of the episode Wendy pours the real truth serum down the sink and we cut to a pair of rats in the sewer who start doing the same thing! Also, earlier on, [[CloudCuckoolander Vince]] stumbled upon the real serum and drank some of it. It caused him to see two creepy live action guys with cameras, presumably the show's animators, and start babbling "The horror...the horror...". Yes, it's a weird show.

to:

* In an episode of ''WesternAnimation/RexTheRunt'' Bob and Rex start drinking what they assume is a truth serum (it was actually orange juice) and, presumably due to their [[YourMindMakesItReal minds making it real]] started admitting to old lies they'd told in the past, revealing secrets and plenty of assorted lampshading ("Why do you wear that {{eyepatch|OfPower}} anyway? You have two eyes!"). However However, at the end of the episode episode, Wendy pours the real truth serum down the sink and we cut to a pair of rats in the sewer who start doing the same thing! Also, earlier on, [[CloudCuckoolander Vince]] stumbled upon the real serum and drank some of it. It caused him to see two creepy live action live-action guys with cameras, presumably the show's animators, and start babbling "The horror...the horror...". Yes, it's a weird show.



* In the ''WesternAnimation/{{Kaeloo}}'' episode "Let's Play Spies", Mr. Cat injects Kaeloo with a truth serum. Eventually, all of the main four get injected with it, and blurt out personal secrets to each other.
* An episode of ''WesternAnimation/StarWarsRebels'' shows that the Interrogation Droid seen in ''Film/ANewHope'' uses this to get information. The screaming is apparently because the needle is very big, and the injection itself rather painful. The effect is depicted fairly realistically, with Hera becoming very blunt and losing much of her vocal filter. The effects wore off pretty quickly, most likely due to the adrenaline caused by subsequent combat burning it out of her system, so that when she finally confessed her feelings for Kanan, she was completely sober.

to:

* In the ''WesternAnimation/{{Kaeloo}}'' episode "Let's Play Spies", Mr. Cat injects Kaeloo with a truth serum. Eventually, all of the main four get injected with it, it and blurt out personal secrets to each other.
* An episode of ''WesternAnimation/StarWarsRebels'' shows that the Interrogation Droid seen in ''Film/ANewHope'' uses this to get information. The screaming is apparently because the needle is very big, and the injection itself rather painful. The effect is depicted fairly realistically, with Hera becoming very blunt and losing much of her vocal filter. The effects wore off pretty quickly, most likely due to the adrenaline caused by subsequent combat burning it out of her system, system so that when she finally confessed her feelings for Kanan, she was completely sober.



* The closest things to a real truth serum we have... are [[InVinoVeritas alcohol]] and marijuana. [[GovernmentConspiracy Project MKULTRA]] found this out the hard way when they discovered that while the more "interesting" mind-bending substances they tried out on unsuspecting subjects were more likely to make such subjects want more substance rather than brainwash them, the FBI had actually gotten actionable intelligence on a bank heist by lacing a captured Mafioso's cigarettes with THC. And just as they were to be declassified, the said "interesting" mind-bending substances were discreetly experimented with by a handful of individuals, and spread through colleges, and... [[NewAgeRetroHippie you know]]..., and it led to telling ''another'' [[HigherUnderstandingThroughDrugs kind of truth]].

to:

* The closest things to a real truth serum we have... are [[InVinoVeritas alcohol]] and marijuana. [[GovernmentConspiracy Project MKULTRA]] found this out the hard way when they discovered that while the more "interesting" mind-bending substances they tried out on unsuspecting subjects were more likely to make such subjects want more substance rather than brainwash them, the FBI had actually gotten actionable intelligence on a bank heist by lacing a captured Mafioso's cigarettes with THC. And just as they were to be declassified, the said "interesting" mind-bending substances were discreetly experimented with by a handful of individuals, individuals and spread through colleges, and... [[NewAgeRetroHippie you know]]..., and it led to telling ''another'' [[HigherUnderstandingThroughDrugs kind of truth]].


!!Examples

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!!Examples!!Examples:



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[[folder:ComicBooks]][[folder:Comedy]]
* From a Steven Wright comedy routine (nothing to do with truth serums, really, but [[RuleOfFunny too funny to omit]]):
-->"Do you swear to tell the truth, the whole truth, and nothing but the truth, so help you God?"\
"Yes, I do. You're ugly. See that woman there in the jury box? I'd really like to sleep with her. Do I continue, or are you gonna ask me questions?"
[[/folder]]

[[folder:Comic Books]]



[[folder: Fan Works]]

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[[folder: Fan [[folder:Fan Works]]



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[[folder:Film--Animation]][[folder:Films -- Animation]]



[[folder:Film--Live-Action]]

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[[folder:Film--Live-Action]][[folder:Films -- Live-Action]]



* In ''Film/TrueLies'', Arnold Schwarzenegger's character is injected with a truth serum by terrorists, which also allows his wife, who has also been captured, to question him about his double life as a secret agent. When the interrogator comes back, Arnie tells him all about the plan he had for escaping and killing him, reveals that he picked his handcuffs, then proceeds to do exactly what he said he would.
** ''Film/TrueLies'' is a comedy, so this scene is deliberately a bit over the top.
** Also consider the answer he gives to Helen's first question: "Are we going to die?" Answer: "Yep." (She didn't ask, "Are they going to kill us?")

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* In ''Film/TrueLies'', Arnold Schwarzenegger's character is injected with a truth serum by terrorists, which also allows his wife, who has also been captured, to question him about his double life as a secret agent. When the interrogator comes back, Arnie tells him all about the plan he had for escaping and killing him, reveals that he picked his handcuffs, then proceeds to do exactly what he said he would.
** ''Film/TrueLies''
would. ''True Lies'' is a comedy, so this scene is deliberately a bit over the top.
**
top. Also consider the answer he gives to Helen's first question: "Are we going to die?" Answer: "Yep." (She didn't ask, "Are they going to kill us?")



* Parodied in ''Film/JohnnyEnglish'', when the titular inept super-spy gets two gadget rings mixed up. Instead of a strong sedative, he accidentally injects a {{mook|s}} with sodium thiopental. The {{mook|s}} becomes not only truthful but extremely helpful, happily obeying Johnny's request for safe directions out of the heavily guarded building before realising in horror what he's just done.

to:

* Parodied in ''Film/JohnnyEnglish'', when the titular inept super-spy gets two gadget rings mixed up. Instead of a strong sedative, he accidentally injects a {{mook|s}} with sodium thiopental. The {{mook|s}} becomes not only truthful but extremely helpful, happily obeying Johnny's request for safe directions out of the heavily guarded building before realising realizing in horror what he's just done.



* Creator/RobertDeNiro's period spy film ''Film/TheGoodShepherd'' subverts this trope in a disturbing, graphically realistic way. Edward Wilson, the head of the newly-formed CIA's counter-espionage branch, is confronted with a Soviet "defector" who may or may not be who he claims to be. In order to determine the man's real identity, [[spoiler: Wilson has his men administer [[JackBauerInterrogationTechnique a brutal physical beating]]. When they still aren't sure, they use a newly-developed truth serum called "[[MushroomSamba Lysergic Acid]]" (better known as LSD). Rather than the above-mentioned effects of "Hollywood" truth serums, the LSD does what you would expect from reality- the man babbles like an idiot and hallucinates. Later, when the drug begins to wear off somewhat, he delivers a ReasonYouSuckSpeech to his interrogators... then jumps out the window to his death.]] In case you were wondering, [[spoiler: he really ''was'' who he claimed to be, making the tragedy AllForNothing, and highlighting the ''in''effectiveness of the so-called "truth serum".]] This was based on [[RealitySubtext a real incident]] where a man who was given LSD without knowing threw himself out of a window while hallucinating. He wasn't a Soviet defector, though, but a ''CIA'' agent given the drug by his own agency to test its effect on unsuspecting subjects.

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* Creator/RobertDeNiro's period spy film ''Film/TheGoodShepherd'' subverts this trope in a disturbing, graphically realistic way. Edward Wilson, the head of the newly-formed CIA's counter-espionage branch, is confronted with a Soviet "defector" who may or may not be who he claims to be. In order to determine the man's real identity, [[spoiler: Wilson [[spoiler:Wilson has his men administer [[JackBauerInterrogationTechnique a brutal physical beating]]. When they still aren't sure, they use a newly-developed truth serum called "[[MushroomSamba Lysergic Acid]]" (better known as LSD). Rather than the above-mentioned effects of "Hollywood" truth serums, the LSD does what you would expect from reality- reality -- the man babbles like an idiot and hallucinates. Later, when the drug begins to wear off somewhat, he delivers a ReasonYouSuckSpeech to his interrogators... then jumps out the window to his death.]] In case you were wondering, [[spoiler: he [[spoiler:he really ''was'' who he claimed to be, making the tragedy AllForNothing, and highlighting the ''in''effectiveness of the so-called "truth serum".]] This was based on [[RealitySubtext a real incident]] where a man who was given LSD without knowing threw himself out of a window while hallucinating. He wasn't a Soviet defector, though, but a ''CIA'' agent given the drug by his own agency to test its effect on unsuspecting subjects.



* The factuality of truth serums is discussed in ''Film/AntManAndTheWasp'' when Sonny Burch's thugs use one on Luis, prompting an argument about whether it's a truth serum or not. Luis of course is already a MotorMouth, so it's not as helpful as Burch would like. [[spoiler: At the end of the movie, the tables are turned and Burch and his men confess their crimes to the police under the drug's effects.]] The question of whether it should be considered a "truth serum" is also brought out, with Burch's thug insisting that there's no such thing and it should be called something else; [[spoiler:he ends up coming around to [[InsistentTerminology Luis's terminology]] when he gets a dose of it at the end.]]

to:

* The factuality of truth serums is discussed in ''Film/AntManAndTheWasp'' when Sonny Burch's thugs use one on Luis, prompting an argument about whether it's a truth serum or not. Luis of course is already a MotorMouth, so it's not as helpful as Burch would like. [[spoiler: At [[spoiler:At the end of the movie, the tables are turned and Burch and his men confess their crimes to the police under the drug's effects.]] The question of whether it should be considered a "truth serum" is also brought out, with Burch's thug insisting that there's no such thing and it should be called something else; [[spoiler:he ends up coming around to [[InsistentTerminology Luis's terminology]] when he gets a dose of it at the end.]]



[[folder:{{Literature}}]]

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[[folder:LiveActionTV]]

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[[folder:LiveActionTV]][[folder:Live-Action TV]]



* In ''[[Series/{{V 1983}} V: The Final Battle]]'', the hero Mike Donovan is injected with an alien truth serum and fulfills this trope completely. This is an ''alien'' formula, so...
** Though the initial injection apparently wasn't strong enough.
-->'''Diana:''' What color is your hair?
-->'''Donovan:''' [[BlatantLies Blue.]] ''(Diana injects him again)''
* From a Steven Wright comedy routine:
-->"Do you swear to tell the truth, the whole truth, and nothing but the truth, so help you God?"\
"Yes, I do. You're ugly. See that woman there in the jury box? I'd really like to sleep with her. Do I continue, or are you gonna ask me questions?"
** Nothing to do with truth serums, really, but [[RuleOfFunny too funny to omit]].

to:

* In ''[[Series/{{V 1983}} V: The Final Battle]]'', the hero Mike Donovan is injected with an alien truth serum and fulfills this trope completely. This is an ''alien'' formula, so...
**
so... Though the initial injection apparently wasn't strong enough.
-->'''Diana:''' What color is your hair?
-->'''Donovan:'''
hair?\\
'''Donovan:'''
[[BlatantLies Blue.]] ''(Diana ''[Diana injects him again)''
* From a Steven Wright comedy routine:
-->"Do you swear to tell the truth, the whole truth, and nothing but the truth, so help you God?"\
"Yes, I do. You're ugly. See that woman there in the jury box? I'd really like to sleep with her. Do I continue, or are you gonna ask me questions?"
** Nothing to do with truth serums, really, but [[RuleOfFunny too funny to omit]].
again]''



* In an episode of ''Series/HerculesTheLegendaryJourneys'', the heroes were searching for the Sword of Veracity, which made whomever held it incapable of lying. Iolaus and the GirlOfTheWeek found themselves in a cave full of swords, so Iolaus grabbed the first sword he could and said she was the ugliest girl he'd ever seen, explaining that the Sword should not allow him to lie. The duo then proceeded to do the same with each sword in turn ("My name is Hercules and I have two heads." "This is a rutabaga.") until she found the right one through a CassandraTruth moment, warning Iolaus of the monster behind him.

to:

* In an episode of ''Series/HerculesTheLegendaryJourneys'', the heroes were searching for the Sword of Veracity, which made whomever held it incapable of lying. Iolaus and the GirlOfTheWeek found themselves in a cave full of swords, so Iolaus grabbed the first sword he could and said she was the ugliest girl he'd ever seen, explaining that the Sword should not allow him to lie. The duo then proceeded to do the same with each sword in turn ("My name is Hercules and I have two heads." "This is a rutabaga.") until she found the right one through a CassandraTruth CssandraTruth moment, warning Iolaus of the monster behind him.



[[folder:{{Mythology}}]]

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[[folder:{{Mythology}}]][[folder:Myths & Religion]]



[[folder:RolePlayingGames]]
* XERRD of Roleplay/DinoAttackRPG developed a substance called Veritaserum, named after the potion from ''Franchise/HarryPotter'', which shuts down the neurological pathways necessary for lying.

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[[folder:RolePlayingGames]]
[[folder:Roleplay]]
* XERRD of Roleplay/DinoAttackRPG ''Roleplay/DinoAttackRPG'' developed a substance called Veritaserum, named after the potion from ''Franchise/HarryPotter'', which shuts down the neurological pathways necessary for lying.



[[folder:TabletopGames]]

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[[folder:{{Theatre}}]]

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--->'''Alfred:''' You'll get nothing but gibberish out of me, madam. <singing> I come from haunts of cootenfern and knicker sudden Sally. Uh...dee-dum dee-dum dee-dum dee-dum, and bicker down the valley.
--->'''Red Claw:''' ''(shakes her head)'' And people wonder why no one takes Britain seriously anymore.

to:

--->'''Alfred:''' You'll get nothing but gibberish out of me, madam. <singing> ''[singing]'' I come from haunts of cootenfern and knicker sudden Sally. Uh...dee-dum dee-dum dee-dum dee-dum, and bicker down the valley.
--->'''Red
valley.\\
'''Red
Claw:''' ''(shakes ''[shakes her head)'' head]'' And people wonder why no one takes Britain seriously anymore.



* ''WesternAnimation/TheFairlyOddparents'' episode "A Bad Case of Diary-Uh" has Vicky twice use it on Timmy.
* In the "Bottomless Pit" episode of ''WesternAnimation/GravityFalls'', Mabel gets tired of Stan's [[ConMan constant lying]] and turns to [[TomeOfEldritchLore the journal]] for a magical solution: Truth Teeth. This turns out to be a [[BeCarefulWhatYouWishFor horrifying mistake]], as without a filter, Stan [[TooMuchInformation complains about his aging body]], insults his customers ([[{{Jerkass}} more than usual]]), and starts confessing his many crimes to the police, [[spoiler: forcing Mabel to [[LaserGuidedKarma tell a lie herself]] in order to save him.]]
-->'''Sheriff Blubs:''' So after further investigation, turns out there ''is'' no "[[LazyAlias Dr. Medicine]]" in Gravity Falls!
-->'''Deputy Durland:''' You better have a durn good explanation for this.
-->'''Stan:''' Oh, and I do! You see, [[ILied I lied to you]]. In addition, I've been parking in handicapped spaces, shoplifting fireworks, and smuggling endangered animals across multiple state lines. Also, you're fat.

to:

* ''WesternAnimation/TheFairlyOddparents'' ''WesternAnimation/TheFairlyOddParents'' episode "A Bad Case of Diary-Uh" has Vicky twice use it on Timmy.
* In the "Bottomless Pit" episode of ''WesternAnimation/GravityFalls'', Mabel gets tired of Stan's [[ConMan constant lying]] and turns to [[TomeOfEldritchLore the journal]] for a magical solution: Truth Teeth. This turns out to be a [[BeCarefulWhatYouWishFor horrifying mistake]], as without a filter, Stan [[TooMuchInformation complains about his aging body]], insults his customers ([[{{Jerkass}} more than usual]]), and starts confessing his many crimes to the police, [[spoiler: forcing [[spoiler:forcing Mabel to [[LaserGuidedKarma tell a lie herself]] in order to save him.]]
-->'''Sheriff Blubs:''' So after further investigation, turns out there ''is'' no "[[LazyAlias Dr. Medicine]]" in Gravity Falls!
-->'''Deputy
Falls!\\
'''Deputy
Durland:''' You better have a durn good explanation for this.
-->'''Stan:'''
this.\\
'''Stan:'''
Oh, and I do! You see, [[ILied I lied to you]]. In addition, I've been parking in handicapped spaces, shoplifting fireworks, and smuggling endangered animals across multiple state lines. Also, you're fat.



[[folder:RealLife]]

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[[folder:RealLife]][[folder:Real Life]]



* The closest things to a real truth serum we have... are [[InVinoVeritas alcohol]] and marijuana. [[GovernmentConspiracy Project MKULTRA]] found this out the hard way when they discovered that while the more "interesting" mind-bending substances they tried out on unsuspecting subjects were more likely to make such subjects want more substance rather than brainwash them, the FBI had actually gotten actionable intelligence on a bank heist by lacing a captured Mafioso's cigarettes with THC.
** And just as they were to be declassified, the said "interesting" mind-bending substances were discreetly experimented with by a handful of individuals, and spread through colleges, and... [[NewAgeRetroHippie you know]]..., and it led to telling ''another'' [[HigherUnderstandingThroughDrugs kind of truth]].
* Hypnosis was once thought to work like this. There is still a persistent myth that it provides perfect and accurate memory recall. Unfortunately, hypnosis is just as unreliable as any other real-life "truth serum," and the human brain is [[MrImagination very prone to modifying or making up memories]]--this might be said to be ''the'' main issue with the very concept as a whole: it assumes that human memory is infallible. (However, [[JustForFun/TropesExaminedByTheMythBusters it has been shown to be somewhat reliable in increasing someone's memory and recall of some kinds of information when objective proof of what the subject is trying to remember is on hand]].)

to:

* The closest things to a real truth serum we have... are [[InVinoVeritas alcohol]] and marijuana. [[GovernmentConspiracy Project MKULTRA]] found this out the hard way when they discovered that while the more "interesting" mind-bending substances they tried out on unsuspecting subjects were more likely to make such subjects want more substance rather than brainwash them, the FBI had actually gotten actionable intelligence on a bank heist by lacing a captured Mafioso's cigarettes with THC.
**
THC. And just as they were to be declassified, the said "interesting" mind-bending substances were discreetly experimented with by a handful of individuals, and spread through colleges, and... [[NewAgeRetroHippie you know]]..., and it led to telling ''another'' [[HigherUnderstandingThroughDrugs kind of truth]].
* Hypnosis was once thought to work like this. There is still a persistent myth that it provides perfect and accurate memory recall. Unfortunately, hypnosis is just as unreliable as any other real-life "truth serum," and the human brain is [[MrImagination very prone to modifying or making up memories]]--this memories]] -- this might be said to be ''the'' main issue with the very concept as a whole: it assumes that human memory is infallible. (However, [[JustForFun/TropesExaminedByTheMythBusters it has been shown to be somewhat reliable in increasing someone's memory and recall of some kinds of information when objective proof of what the subject is trying to remember is on hand]].)





* In ''WesternAnimation/{{Valiant}}'', a British homing pigeon is given a truth serum by the German falcons who have captured him. While he tells the truth, he still refuses to actually tell them what they want to know, and instead babbles on and on, annoying them until he accidentally gives them information they wanted to know in the first place.

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* In ''WesternAnimation/{{Valiant}}'', a British homing pigeon Mercury is given a truth serum by the German falcons who have captured him. him to get him to tell them the message's departure location. While he tells the truth, he still refuses to actually tell them what they want to know, and instead babbles on and on, annoying them until he accidentally gives them information they wanted to know in reveals the first place.location--St. Pierre. As Von Talon's minions then cover Mercury's cage, Mercury still continues to blurt out random secrets.

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