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* ''WesternAnimation/StevenUniverseTheMovie'' features Pearl, Amethyst, Garnet, Steven, and new enemy Spinel being hit by a rejuvinator, which resets gems to "factory default." In Steven's case, being a HalfHumanHybrid, only his powers are affected, but for the Gems, it means reseting their forms, memories, and personalities to the way they were first made. Spinel, reset to be a carefree best friend to Steven, suggests that their memories are like a puzzle: "If we give them all the pieces, eventually they'll get the picture." The focus of the movie is then trying to remind the Gems who they are, so that they can deal with the injector Spinel doesn't remember bringing to the planet.

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* ''WesternAnimation/StevenUniverseTheMovie'' features Pearl, Amethyst, Garnet, Steven, and new enemy Spinel being hit by a rejuvinator, which resets gems to "factory default." In Steven's case, being a HalfHumanHybrid, only his powers are affected, but for the Gems, it means reseting their forms, memories, and personalities to the way they were first made. Spinel, reset to be a carefree best friend to Steven, suggests that their memories are like a puzzle: "If we give them all the pieces, eventually they'll get the picture." The focus of the movie is then trying to remind the Gems who they are, so that they can deal with the injector Spinel doesn't remember bringing to the planet.


* Happens in the ''{{Franchise/DisneyFairies}}'' comic “Vidia Turns Nice.” Vidia loses her memory when she gets hit by a falling branch. The nursing-talent fairies tell Tinker Bell to hit Vidia on the head again, but she decides to convince Vidia that her talent is helping other fairies, hoping she’ll be nicer when she’s cured. But the other fairies start taking advantage of her, and Prilla convinces Tink to hit her again and cure her. It’s quickly clear after that Tink’s plan failed-Vidia’s back to her usual sour self.

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* Happens in the ''{{Franchise/DisneyFairies}}'' ''{{Franchise/Disney Fairies}}'' comic “Vidia Turns Nice.” Vidia loses her memory when she gets hit by a falling branch. The nursing-talent fairies tell Tinker Bell to hit Vidia on the head again, but she decides to convince Vidia that her talent is helping other fairies, hoping she’ll be nicer when she’s cured. But the other fairies start taking advantage of her, and Prilla convinces Tink to hit her again and cure her. It’s quickly clear after that Tink’s plan failed-Vidia’s back to her usual sour self.

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* Happens in the ''{{Franchise/DisneyFairies}}'' comic “Vidia Turns Nice.” Vidia loses her memory when she gets hit by a falling branch. The nursing-talent fairies tell Tinker Bell to hit Vidia on the head again, but she decides to convince Vidia that her talent is helping other fairies, hoping she’ll be nicer when she’s cured. But the other fairies start taking advantage of her, and Prilla convinces Tink to hit her again and cure her. It’s quickly clear after that Tink’s plan failed-Vidia’s back to her usual sour self.

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* Happens to Delia on ''Series/CallTheMidwife'' after she's hit by a car, after a brief coma. Most heartbreakingly, Delia doesn't recognize her girlfriend Patsy when Patsy visits her in the hospital. It's not resolved by the end of the episode... but by the next episode, set a couple of months later, it is (though Delia is still suffering from milder lingering consequences of her brain injury).


* Averted with ''Series/{{CSINY}}''. Mac has a kind of amnesia called aphasia due to his being shot in the back. He remembered most things but forgot random everyday words. It took several months for him to recover, though he's nearly there now.

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* Averted with ''Series/{{CSINY}}''. Mac has a kind of amnesia called aphasia due to his being shot in the back.back and flatlining during surgery. He remembered most things but forgot random everyday words. It took several months for him to recover, though he's nearly there now.once he did, he was fine.


* ''TabletopGame/DungeonsAndDragons''. In the ''Magazine/{{Dungeon}}'' magazine #22 adventure "Tomb It May Concern", a paladin is hit on the head and develops amnesia. He forgets about his CharacterClass (paladin), how to use his class abilities, where he is, how he got there, and why he's there. His memories eventually return during the adventure and over time.

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* ''TabletopGame/DungeonsAndDragons''. In the ''Magazine/{{Dungeon}}'' magazine #22 adventure "Tomb It May Concern", a paladin is hit on the head blown into a wall headfirst by an explosive gas trap and develops amnesia. He forgets about his CharacterClass (paladin), how to use his class abilities, where he is, how he got there, and why he's there. His memories eventually return return, either during the course of the adventure and or over time.time (within a month after the end of the adventure).


* ''TabletopGame/DungeonsAndDragons''. In the ''Magazine/{{Dungeon}}'' magazine #22 adventure "Tomb It May Concern", a paladin is hit on the head and develops amnesia. He forgets about his CharacterClass (paladin), where he is, how he got there, and why he's there.

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* ''TabletopGame/DungeonsAndDragons''. In the ''Magazine/{{Dungeon}}'' magazine #22 adventure "Tomb It May Concern", a paladin is hit on the head and develops amnesia. He forgets about his CharacterClass (paladin), how to use his class abilities, where he is, how he got there, and why he's there.there. His memories eventually return during the adventure and over time.

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[[folder:Tabletop Games]]
* ''TabletopGame/DungeonsAndDragons''. In the ''Magazine/{{Dungeon}}'' magazine #22 adventure "Tomb It May Concern", a paladin is hit on the head and develops amnesia. He forgets about his CharacterClass (paladin), where he is, how he got there, and why he's there.
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*In VideoGame/FallenLondon mere exposure to [[FictionalColour irrigo]], the colour of forgotten things, is enough to induce amnesia. It starts off mild, but before long you're forgetting things like who you are, where you're from, and so on. It's so dangerous that your body will start to grow bone over your eye sockets to protect you from its harmful effects. Occasionally people use it to remove traumas from their memory, while spies use it to forget details they don't want anyone getting their hands on.

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* ''{{VideoGame/Yakuza1}}'': Averted. After being abducted and nearly raped by Sohei Dojima, and forced to watch as Nishiki gunned down Dojima, Yumi was severely traumatized and it took her several years to recover. And then it took her another year to deal with the emotional fallout of her memories returning.


* Something similar happens in the ''Series/{{Batman}}'' series with King Tut, an archaeology professor who gained a NapoleonDelusion after a bump to the head. Being knocked on the head again restores his sanity and true personality, but sadly for him, he tends to relapse (and make return appearances) just as easily.

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* Something similar happens in the ''Series/{{Batman}}'' ''Series/Batman1966'' series with King Tut, an archaeology professor who gained a NapoleonDelusion after a bump to the head. Being knocked on the head again restores his sanity and true personality, but sadly for him, he tends to relapse (and make return appearances) just as easily.


* ''Series/TheLegendOfDickAndDom'' has an episode, "Forget Me Nuts", where all the characters (including a mysterious one we have not seen before) wake up with no memory and have to try and work out who they are, what happened, and what they need to do next. By the end, they have [[spoiler: managed to get the BigBad to lose his memory too]], and convinced him that he is a travelling sandal saleswoman. [[SugarWiki/FunnyMoments And then the narrator loses his memory.]]

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* ''Series/TheLegendOfDickAndDom'' has an episode, "Forget Me Nuts", where all the characters (including a mysterious one we have not seen before) wake up with no memory and have to try and work out who they are, what happened, and what they need to do next. By the end, they have [[spoiler: managed to get the BigBad to lose his memory too]], and convinced him that he is a travelling sandal saleswoman. [[SugarWiki/FunnyMoments And then the narrator loses his memory.]]

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* People with [[AttentionDeficitOohShiny ADD/ADHD]] can sometimes experience a limited form of this, because their brain's internal sense of what stimulus or information is needs to be stored in the long-term memory is often muddled; their brain basically thinks of everything as equally "important" and may discard parts of memories seemingly at random or fixate on trivial or unrelated details. A person with ADHD might, after having an important meeting with their boss, only vaguely recall the content of the meeting itself, but remember in exact detail what kind of tie their boss was wearing. In extreme cases, people who experience this forget the details of the conversations they're ''currently having''.


On TV, amnesia is just a plot device for the current episode or movie or whatever, and it's pretty much always organic and originated by some kind of funny injury or physical impact. Everything and anything the character knows about him or herself may be lost, or just the last 24 hours may disappear -- it's [[LaserGuidedAmnesia completely dependent on the plot]]. This is often used to avoid AsYouKnow exposition by making it so the character ''doesn't'' know things they should be familiar with; whether it's actually an improvement is down to the individual viewer.

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On TV, amnesia is just a plot device for the current episode or movie or whatever, and it's pretty much always organic and originated by some kind of funny injury or physical impact. Everything and anything the character knows about him or herself may be lost, or just the last 24 hours may disappear -- it's [[LaserGuidedAmnesia completely dependent on the plot]]. This is often used to avoid AsYouKnow exposition by making it so the character ''doesn't'' know things they should be familiar with; whether it's actually an improvement is down to the individual viewer.






[[folder:Comic Strips]]
* ''ComicStrip/ModestyBlaise'': In "A Present for the Princess'', Willie loses his memory after hitting his head on a rock in the river, although he retains all of his skills. This leads to a CriminalAmnesiac situation.
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* A particularly infamous example occurred in the first series of ''Series/TwentyFour'' [[spoiler: where Teri goes into shock and forgets nearly everything about her life, only to recover suddenly a few hours later]]. It should be noted that the first series of ''[[Series/TwentyFour 24]]'' was much less tightly written than later ones, and the writers have admitted that they just needed a way to keep the character away from the action for a few episodes.

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!!!'''In General:'''
* Subverted on most [[SoapOpera soap operas]]. While characters being injured and not remembering anything about their past life is a very common plot, the recovery is somewhat realistic--occurring over a period of time, with intermittent flashbacks.
** Completely averted with ''Series/GeneralHospital'''s Jason Quartermaine after he suffered brain damage in a car accident. When he woke up not remembering anything about his life beforehand, viewers naturally assumed this trope would play out. Only for him to never remember anything and adapt a completely new identity as Jason Morgan.
!!!'''By Series:'''
* Harry from ''Series/ThirdRockFromTheSun'' gets it after getting sucked into a tornado. Not from the crash, [[RuleOfFunny but from a flower pot falling on his head.]] Which leads to him finding out that AliensAmongUs, [[HilarityEnsues but not knowing he's one of them.]] He gets better after getting [[LightningCanDoAnything hit by a lightning bolt.]] The lightning cure might be justified with the chip in his head.
* A particularly infamous example occurred in the first series of ''Series/TwentyFour'' [[spoiler: where Teri goes into shock and forgets nearly everything about her life, only to recover suddenly a few hours later]]. It should be noted that the first series of ''[[Series/TwentyFour 24]]'' ''24'' was much less tightly written than later ones, and the writers have admitted that they just needed a way to keep the character away from the action for a few episodes.



* In one episode of ''Series/StarTrekEnterprise'', Captain Archer actually gets anterograde amnesia. Earth is destroyed by the Xindi, and Archer has been unable to form any new memories for years. Every morning he wakes up and thinks it's the same day, when in reality it's about 13 years after the event. Of course, Dr. Phlox eventually cures him (it's due to a virus), but because it's a time-based virus, curing it in the present also cures it in the past; meaning Archer never lost his memory and Earth was never destroyed.
* ''Series/StarTrekTheNextGeneration'':
** The typical "amnesia plot" was subverted in the episode "Future Imperfect". After an away mission goes awry, Commander Riker wakes up sixteen years in the future, with Doctor Crusher explaining that he has acquired a brain disease which has ravaged all memory of the intervening years since he contracted the infection during the away mission. [[spoiler: This turns out to be an elaborate ruse - he's still in the present, and his mind is being probed to construct this future reality in the hopes that he will keep a lonely alien company.]]
** The episode "Thine Own Self" has Data getting amnesia while on a pre-industrial alien world. This at least is justified somewhat, since Data is an [[RidiculouslyHumanRobots Android]] and thus his "memory loss" can be explained away as a malfunction.
** And yet another has the entire crew losing their memories as the result of a cunning plan by an alien intruder to have them help him make war on an enemy. Naturally, this leads to all kinds of hijinks and hilarious misunderstandings as the crew misinterpret their true roles on the ship.
** Yet another episode has them gradually discover they have amnesia after being led to believe they'd been knocked unconscious for 30 seconds and going through a wormhole. In actuality, they voluntarily had their memories of the previous day wiped, but failed to eliminate all the clues that indicated more time had passed.

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* In one ''Series/TheAddamsFamily'' episode of ''Series/StarTrekEnterprise'', Captain Archer actually "Amnesia in the Addams Family" is entirely about this.
* ''Series/{{ALF}}''
gets anterograde amnesia. Earth is destroyed by it after a bump on the Xindi, head [[note]] originally it was using an egg beater in the tub to make a hot tub, but some kid tried it in RealLife and Archer has been unable it had to form any new memories for years. Every morning he wakes up be [[Bowdlerize Bowdlerized]] [[/note]] and thinks it's he's an insurance agent named Wane Shlaygil (he was reading insurance brochures right before the same day, when in reality it's about 13 years after bump), triggering the event. Of course, Dr. Phlox FlashbackEpisode.
* In the ''Series/{{Andromeda}}'' episode "Music of a Distant Drum" [[TokenHeroicOrc Tyr]] gets this from some NanoMachines, his Nietzschean immune system
eventually cures him (it's due to a virus), fights them off but because it's a time-based virus, curing it in the present also cures it in meantime he becomes somewhat attached to the past; meaning Archer never lost his memory and Earth was never destroyed.
* ''Series/StarTrekTheNextGeneration'':
** The typical "amnesia plot" was subverted in the episode "Future Imperfect". After an away mission goes awry, Commander Riker wakes up sixteen years in the future, with Doctor Crusher explaining that he has acquired a brain disease which has ravaged all memory of the intervening years since he contracted the infection during the away mission. [[spoiler: This turns out to be an elaborate ruse - he's still in the present, and his mind is being probed to construct this future reality in the hopes that he will keep a lonely alien company.]]
** The episode "Thine Own Self" has Data getting amnesia while on a pre-industrial alien world. This at least is justified somewhat, since Data is an [[RidiculouslyHumanRobots Android]] and thus his "memory loss" can be explained away as a malfunction.
** And yet another has the entire crew losing their memories as the result of a cunning plan by an alien intruder to have them help him make war on an enemy. Naturally, this leads to all kinds of hijinks and hilarious misunderstandings as the crew misinterpret their true roles on the ship.
** Yet another episode has them gradually discover they have amnesia after being led to believe they'd been knocked unconscious for 30 seconds and going through a wormhole. In actuality, they voluntarily had their memories of the previous day wiped, but failed to eliminate all the clues that indicated more time had passed.
fisherwoman who finds him.



* ''Series/AreYouBeingServed'': Subverted in "Memories Are Made of This". Mrs. Slocombe gets hit on the head with a golf ball, and [[spoiler: uses the opportunity to pretend to have lost all her memories past the age of 5 so she can get a free coat]].
* Something similar happens in the ''Series/{{Batman}}'' series with King Tut, an archaeology professor who gained a NapoleonDelusion after a bump to the head. Being knocked on the head again restores his sanity and true personality, but sadly for him, he tends to relapse (and make return appearances) just as easily.



* In a two-part episode of ''Series/DiffrentStrokes'', Dad loses his memory after being in a car accident. He recovers by the end, though.

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* In a two-part episode The whole point of ''Series/DiffrentStrokes'', Dad loses his ''Series/{{Blindspot}}'' is a woman being found in a large bag in Times Square, her body covered in fresh tattoos and her completely lacking in memory. The doctor examining her explains that her body was flooded with an experimental drug capable of causing temporary memory after being in loss. She eventually starts getting flashes of her past. [[spoiler:It turns out she agreed to the procedure as part of a car accident. He highly complex BatmanGambit by her adoptive terrorist mother. In Season 2, she zaps her brother with the same drug, but he only gets a single dose and eventually recovers by the end, though.all his memories, extremely pissed at her.]]



* The ''Series/{{Castle}}'' episode "The Fifth Bullet" featured a case of this. Possibly subverted in that the character in question never recovers.
* Averted on ''Series/{{Chuck}}''. In the series finale, [[spoiler: Sarah's memory is virtually destroyed by the faulty Intersect 3.0 after she is captured by [[BigBad Quinn]] and forced to Flash repeatedly, which he then uses to brainwash her into working for him. Even after the team helps her throw off Quinn's influence, there is no way to restore her memory again after Chuck uploads the sole remaining copy of the Intersect himself to save a theater full of people from being blown up by a bomb. Although there are fragments of memories remaining that strongly imply she could eventually recover some of what she lost, the series still ends on a somewhat ambiguous note over her future.]]
* David in ''Series/CoronationStreet'' shoves his mother down the stairs after finding out she convinced his girlfriend to abort their baby. Gail develops amnesia after the event and is temporarily led to believe that she just fell down the stairs. A few years later David himself spontaneously develops epilepsy - resulting in black-out periods where he can't remember what he's done.
* The [=UnSub=] in the ''Series/CriminalMinds'' episode "Tabula Rasa" got amnesia after falling off a building and being put into a coma for three years.
* Averted with ''Series/{{CSINY}}''. Mac has a kind of amnesia called aphasia due to his being shot in the back. He remembered most things but forgot random everyday words. It took several months for him to recover, though he's nearly there now.
* In a two-part episode of ''Series/DiffrentStrokes'', Dad loses his memory after being in a car accident. He recovers by the end, though.



* Jarod developed amnesia on an episode of ''Series/ThePretender'' after a criminal he was going after turned out to have an accomplice, who whopped him in the head.

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* Jarod developed amnesia on an episode of ''Series/ThePretender'' after a criminal he was going after turned out to have an accomplice, who whopped him ''Series/DoctorWho'': Inverted in the head.case of [[spoiler:Donna Noble]]. In [[Recap/DoctorWhoS30E13JourneysEnd "Journey's End"]], [[spoiler:the Doctor has to wipe her memories of him to save her life. Her memory isn't wiped very easily, but the Doctor warns her family that anything that reminds her of those memories will restore them and kill her.]] However, in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], it turns out [[spoiler:the Doctor put in a defence mechanism release valve that can help somewhat.]]



* Peter spends most of season two of ''Series/{{Heroes}}'' [[TrappedByMountainLions running around Ireland]] without his memory. He gets it back around the time he rejoins the main plot thread of the season. In this case, the amnesia was the result of the Haitian using his MindWipe ability on him.
* In the ''Series/FraggleRock'' episode "Boober Gorg", Boober loses his memory after being hit on the head by a falling rock, and begins thinking he's a Gorg. The Gorgs are actually fooled too, but only because there were rumors of a sorcerer roaming the area and one of them coincidentally going missing, leading the Gorgs to jump to the wrong conclusion...
* ''Series/TheFugitive'' episode "Escape Into Black" has Richard Kimble getting amnesia from an exploding stove, making him forget he's a wanted felon and thus vulnerable to capture.



* Series/HannahMontana gives Jackson amnesia through what seems like a blow to the head, and Miley uses his memory loss to her advantage, convincing Jackson that he is her idea of the perfect older brother (HappinessInSlavery). Subverted when Jackson's amnesia turns out to be an even more epic ZanyScheme to remind Miley that she would miss her brother if he were any different (given nearly every episode ends with AnAesop of some variety, this is the Disney Channel after all, so this is just par for the course for the show).

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* Series/HannahMontana ''Series/HannahMontana'' gives Jackson amnesia through what seems like a blow to the head, and Miley uses his memory loss to her advantage, convincing Jackson that he is her idea of the perfect older brother (HappinessInSlavery). Subverted when Jackson's amnesia turns out to be an even more epic ZanyScheme to remind Miley that she would miss her brother if he were any different (given nearly every episode ends with AnAesop of some variety, this is the Disney Channel after all, so this is just par for the course for the show).



* Subverted in ''Series/HeidiBienvenidaACasa'': After Toro finally asks Clara to be his girlfriend, he immediately falls down and hits his head. Given the timing and the soap opera nature of the show, one would assume that he just lost his memory of asking Clara. However, he turns out to be perfectly fine.
* An episode of ''Series/HumanTarget'' has the client lose his memory in a car bombing incident right as the team was about to meet him. Thus, they know almost nothing about him except that he's being targeted for murder, which is one more thing than he knows.



* An ''Series/IDreamOfJeannie'' episode has Jeannie getting amnesia from a bump on the head, and forgetting that she's a genie.
** In another episode, Tony bumps his head and forgets that Jeannie is a genie. He almost marries her, but another bump makes him recover.
* Subverted on ''Series/KenanAndKel''. When the two go to the airport to pick up Kenan's friend's girlfriend, they accidentally hit her on the head. When she wakes up, she claims she doesn't have a boyfriend and leaves. HilarityEnsues as they try to find her and get her back. In the end, it turns out they got the wrong girl. It was also lampshaded when Kel attempts to get her memory back by hitting her a second time.
* In the ''Series/KnightRider'' episode "Knightmares", Michael loses the last few years of his life. This is particularly stressful for him given that in that time he's acquired a) a completely new identity b) a new ''face'' and c) a partner who's a talking car.
* ''Series/TheLegendOfDickAndDom'' has an episode, "Forget Me Nuts", where all the characters (including a mysterious one we have not seen before) wake up with no memory and have to try and work out who they are, what happened, and what they need to do next. By the end, they have [[spoiler: managed to get the BigBad to lose his memory too]], and convinced him that he is a travelling sandal saleswoman. [[SugarWiki/FunnyMoments And then the narrator loses his memory.]]



* In the ''Series/LoisAndClark'' episode "All Shook Up", Clark attempts to destroy an asteroid heading for Earth by [[RammingAlwaysWorks ramming into it]], only to fall back to Earth and lose his memory. The asteroid is delayed on its mission due to destroy all life on Earth in a few days, but Superman didn't get it sufficiently pushed off its course -- and he's nowhere to be found. Everyone wonders where their hero is, including the amnesiac Clark. His parents try to explain to him that ''he'' is Superman. His dad succeeds by trying to hit Clark with a bat and having it shatter. He can't re-learn to fly in a few days, though. Eventually, just as all seems lost, [[StatusQuoIsGod he regains his memory and pushes the asteroid out of the way]]. Like a number of ''Lois and Clark'' episodes, this is based on [[Series/TheAdventuresOfSuperman the 1950s television series]] with George Reeves. This one is from the 1953 episode [[Recap/TheAdventuresOfSupermanS2E12PanicInTheSky "Panic in the Sky"]].



* In one episode of ''Series/MarriedWithChildren'', Peggy bumps her head and gets amnesia. Al tricks her into believing that she was a good housewife. Thelma does the same to Naomi on ''Series/MamasFamily''.
* ''Series/MacGyver1985'' became an amnesiac several times as a result of blows to the head. Given that he's knocked unconscious at least once an episode, he's lucky that's the worst he ever got.

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* In one episode of ''Series/MarriedWithChildren'', Peggy bumps her head and gets amnesia. Al tricks her into believing that she was a good housewife. Thelma does the same to Naomi on ''Series/MamasFamily''.
* ''Series/MacGyver1985''
''Series/{{MacGyver|1985}}'' became an amnesiac several times as a result of blows to the head. Given that he's knocked unconscious at least once an episode, he's lucky that's the worst he ever got.got.
* Averted on ''Series/MagnumPI''. In "Try to Remember", Thomas isn't just bopped on the head. He is in a terrible accident in the middle of a missing persons case, and has a serious concussion among various other injuries. When he wakes up, he has no difficulty remembering who he is, but not what happened immediately prior to the wreck, and he is the prime suspect in the murder of the woman he was supposed to find.



* In one episode of ''Series/MarriedWithChildren'', Peggy bumps her head and gets amnesia. Al tricks her into believing that she was a good housewife. Thelma does the same to Naomi on ''Series/MamasFamily''.
* ''Series/TheMentalist''
** Jane loses his memory after he almost drowns.
** Used in the episode "Red Badge" when Lisbon loses the memory of what happened in a certain night near a crime scene [[note]]they get tipped off that something is wrong when she can't remember even under hypnosis[[/note]] and fakes a breakdown afterwards to trick the killer to confess when reliving the moment. [[INeverSaidItWasPoison He told them about a cross that was on the inside of the door, somewhere that only the killer could see.]]



* ''Series/{{Monk}}'' once got temporary amnesia from a blow to the head. In the episode, his therapist did acknowledge that that kind of amnesia is quite rare.
* Used in an episode of ''Series/MyNameIsEarl''. Earls old buddy Sweet Johnny (cause he’s the sweetest guy anyone knew) is convinced by Earl to keep doing dangerous stunts that leave him laid up... so Earl can bang his girlfriend. After twice trying to confess, he finds out it wasn't his fault. Johnny bashed his head into a drawer, which resets his memory to the same day every time. Slightly subverted as there is no magic fix. After trying to kill himself, Johnny simply knocks himself out, resetting his memory once again. Earl finally resigns to the fact that this is the one list item he can never cross off. He circles it instead.
* The "Angels Revenge" episode of ''Series/MysteryScienceTheater3000'' opens with Crow believing he has amnesia, and asking Mike to "clear it up" by [[TapOnTheHead hitting him on the head]] with a [[HyperspaceMallet large wooden mallet]].
-->'''Mike:''' So, Crow, about this amnesia of yours...\\
'''Crow:''' Oh, it's terrible, Mike. The list of things I can't remember is endless! I can't remember you, I can't remember Cambot, I can't remember Fisk's home run off the foul pole in the bottom of the 12th in Game Six of the '75 World Series!\\
'''Servo:''' ''[working a crossword puzzle]'' Okay, 'Mythical beast', eight letters, beginning with...\\
'''Crow:''' Minotaur.
* Gibbs suffers a two-part amnesia arc [[spoiler:after being blown up]] in the third season finale of ''Series/{{NCIS}}''. It's mostly an excuse to drag out the search for the bad guy while still allowing Gibbs to be conscious in many scenes. Also, to make Ziva cry. In an ironic twist, a bonk to ''Ziva's'' head (courtesy of the [[FanNickname Gibbs slap]]) triggers some of his memories.
* ''Series/TheNewAvengers'': A variant in "To Catch a Rat". A agent suffering crippling injuries in an attempt on his life and loses all of his memories. Unlike most uses of this trope, his memory stays gone for 17 years. The Easy Amnesia comes into play when a blow to his head (from a child's swing) restores his memory instantly.



* The entire plot of ''Series/SamanthaWho''.
* After a car crash in the ''Music/SClub7'' Christmas Special, Paul gets amnesia, which is later cured by watching another patient at the hospital crash his wheelchair. Hannah is also left unable to speak correctly for a time due to the crash.
* Cameron in ''Series/TerminatorTheSarahConnorChronicles'' gets a kind of this in Alison from Palmdale. Her 'amnesia' is caused by a faulty chip however.
* Rachel [=McKenna=] from ''Series/ShortlandStreet'' lost her memory and underwent a total personality change when she was struck by lightning. After several weeks all it took was a simple electric shock from a lamp to get her memory and her old personality back. Only now she couldn't remember anything that happened when she suffered from the amnesia.
* ''Series/{{Smallville}}'': One StoryArc [[AvertedTrope doesn't use]] this trope. Lex Luthor, through his father's machinations, is given permanent amnesia through electroshock at a crooked psych ward, causing him to forget both his father's evil dealings and Clark's secret identity. Is also an example of LaserGuidedAmnesia, since it's convenient to the plot. That said ''Smallville'' has a lot of Easy Amnesia. 90% of the cast, Clark Kent included, ought to be suffering from severe head trauma by now. If someone sees Clark using his powers, especially in the early seasons, you can bet they'll get an instant bonk on the head to forget that. The bludgeoning might not even be needed, but although psychological shock is more likely to trigger something like this, they don't show any other signs of it. There's a vaccine: "If you learn Clark's secret and don't forget it immediately, you are henceforth immune to amnesia". Or you die.
* ''Series/{{Soap}}'' has a classic case of this with Chester forgetting who he was and only slowly recovering. For a while he thought his name was Chester Plate instead of Tate.
* An episode of ''Series/StargateSG1'' has Vala hooked up to a device meant to probe her memory. When a zat [[LightningCanDoAnything sends a power surge]] through it, she loses all knowledge of who she is (but apparently gains enough knowledge of Earth customs to pass unnoticed).



* David in ''Series/CoronationStreet'' shoves his mother down the stairs after finding out she convinced his girlfriend to abort their baby. Gail develops amnesia after the event and is temporarily led to believe that she just fell down the stairs. A few years later David himself spontaneously develops epilepsy - resulting in black-out periods where he can't remember what he's done.

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* David in ''Series/CoronationStreet'' shoves his mother down the stairs Happens to Cousin Larry on ''Series/PerfectStrangers'' after finding out she convinced his girlfriend to abort their baby. Gail develops amnesia after the event and is temporarily led to believe that she just fell he falls down the stairs. A few years later David himself spontaneously develops epilepsy - resulting HilarityEnsues.
** Balki coaching Cousin Larry on how to introduce himself...
--->'''Balki:''' Hello, My name is Cousin Larry Appleton.\\
'''Larry:''' Hello, My name is Cousin Larry Appleton.\\
'''Balki:''' How are you?\\
'''Larry:''' ''[in a sad tone]'' Fine.\\
''[Balki sighs]''
* The ''Series/PowerRangersInSpace'' episode "T.J.'s Identity Crisis" had T.J. suffer an injury that made him forget who he was and that he was the Blue Space Ranger.
* Jarod developed amnesia on an episode of ''Series/ThePretender'' after a criminal he was going after turned out to have an accomplice, who whopped him
in black-out periods where he can't remember what he's done.the head.



* ''Series/StargateAtlantis'' has a rare example of both: Everyone in Atlantis [[spoiler: except Ronon and Teyla]] gets not only retrograde amnesia, but also loses their newly formed memories every few minutes. It's caused by [[spoiler: a common childhood disease similar to chicken pox that humans never encountered before and therefore isn’t immune to]].

to:

* The entire plot of ''Series/SamanthaWho''.
* After a car crash in the ''Music/SClub7'' Christmas Special, Paul gets amnesia, which is later cured by watching another patient at the hospital crash his wheelchair. Hannah is also left unable to speak correctly for a time due to the crash.
* In the ''Series/ShiningTimeStation'' episode "Stacy Forgets Her Name", Stacy Jones loses her memory after sniffing some flowers Mr. Conductor had sprinkled with a "Forgetting Dust" in order to shoo away some bees. Her nephew, Dan, and Mr. Conductor help jog her memory, and she makes a full recovery after taking a nap.
* ''Series/{{Shoestring}}'': Keith Amery from "Where Was I?" falls and hits his head on a rock. He isn't knocked out and starts running again almost immediately, but it's enough to give him total retrograde amnesia. He gets his memory back on time for the climax.
* Rachel [=McKenna=] from ''Series/ShortlandStreet'' lost her memory and underwent a total personality change when she was struck by lightning. After several weeks all it took was a simple electric shock from a lamp to get her memory and her old personality back. Only now she couldn't remember anything that happened when she suffered from the amnesia.
* ''Series/{{Sisters}}''. Second-oldest sister Teddy doesn't remember anything about her life after being shot in the head. But within one episode that only takes place over several days, she regains her memory and never again suffers any ill effects from her injury.
%%* Happens to the Governor in one episode of ''Series/TheSlammer''.
* ''Series/{{Smallville}}'': One StoryArc [[AvertedTrope doesn't use]] this trope. Lex Luthor, through his father's machinations, is given permanent amnesia through electroshock at a crooked psych ward, causing him to forget both his father's evil dealings and Clark's secret identity. Is also an example of LaserGuidedAmnesia, since it's convenient to the plot. That said ''Smallville'' has a lot of Easy Amnesia. 90% of the cast, Clark Kent included, ought to be suffering from severe head trauma by now. If someone sees Clark using his powers, especially in the early seasons, you can bet they'll get an instant bonk on the head to forget that. The bludgeoning might not even be needed, but although psychological shock is more likely to trigger something like this, they don't show any other signs of it. There's a vaccine: "If you learn Clark's secret and don't forget it immediately, you are henceforth immune to amnesia". Or you die.
* ''Series/{{Soap}}'' has a classic case of this with Chester forgetting who he was and only slowly recovering. For a while he thought his name was Chester Plate instead of Tate.
* ''Franchise/{{Stargate|Verse}}'':
** An episode of ''Series/StargateSG1'' has Vala hooked up to a device meant to probe her memory. When a zat [[LightningCanDoAnything sends a power surge]] through it, she loses all knowledge of who she is (but apparently gains enough knowledge of Earth customs to pass unnoticed).
**
''Series/StargateAtlantis'' has a rare example of both: Everyone in Atlantis [[spoiler: except Ronon and Teyla]] gets not only retrograde amnesia, but also loses their newly formed memories every few minutes. It's caused by [[spoiler: a common childhood disease similar to chicken pox that humans never encountered before and therefore isn’t immune to]].



* In one episode of ''Series/StarTrekEnterprise'', Captain Archer actually gets anterograde amnesia. Earth is destroyed by the Xindi, and Archer has been unable to form any new memories for years. Every morning he wakes up and thinks it's the same day, when in reality it's about 13 years after the event. Of course, Dr. Phlox eventually cures him (it's due to a virus), but because it's a time-based virus, curing it in the present also cures it in the past; meaning Archer never lost his memory and Earth was never destroyed.
* ''Series/StarTrekTheNextGeneration'':
** The typical "amnesia plot" was subverted in the episode "Future Imperfect". After an away mission goes awry, Commander Riker wakes up sixteen years in the future, with Doctor Crusher explaining that he has acquired a brain disease which has ravaged all memory of the intervening years since he contracted the infection during the away mission. [[spoiler: This turns out to be an elaborate ruse - he's still in the present, and his mind is being probed to construct this future reality in the hopes that he will keep a lonely alien company.]]
** The episode "Thine Own Self" has Data getting amnesia while on a pre-industrial alien world. This at least is justified somewhat, since Data is an [[RidiculouslyHumanRobots Android]] and thus his "memory loss" can be explained away as a malfunction.
** And yet another has the entire crew losing their memories as the result of a cunning plan by an alien intruder to have them help him make war on an enemy. Naturally, this leads to all kinds of hijinks and hilarious misunderstandings as the crew misinterpret their true roles on the ship.
** Yet another episode has them gradually discover they have amnesia after being led to believe they'd been knocked unconscious for 30 seconds and going through a wormhole. In actuality, they voluntarily had their memories of the previous day wiped, but failed to eliminate all the clues that indicated more time had passed.
* Cameron in ''Series/TerminatorTheSarahConnorChronicles'' gets a kind of this in "Alison from Palmdale". Her 'amnesia' is caused by a faulty chip however.
* ''Series/TheTimeTunnel'' episode "The Death Merchant". Tony is knocked unconscious by an artillery explosion and wakes up with amnesia. In a fight near the end of the episode, he's knocked unconscious again. When he comes to, his memory has returned.
* Cole on ''Series/{{Tracker}}'' recovers his memories fairly quickly in "Remember When". He lost them when he was zapped while working on his life force collector machine. Like the ''Series/DueSouth'' example, it was an excuse for a clip show.
* In ''Series/VazelinaHjulkalender'', Santa gets Easy Amnesia from hurting his head in the sledge crash. The injury didn't cause any permanent damage. In fact, it didn't even knock him unconscious.



* Gibbs suffers a two-part amnesia arc [[spoiler:after being blown up]] in the third season finale of ''Series/{{NCIS}}''. It's mostly an excuse to drag out the search for the bad guy while still allowing Gibbs to be conscious in many scenes. Also, to make Ziva cry. In an ironic twist, a bonk to ''Ziva's'' head (courtesy of the [[FanNickname Gibbs slap]]) triggers some of his memories.
* ''Series/TheMentalist''
** Jane loses his memory after he almost drowns.
** Used in the episode "Red Badge" when Lisbon loses the memory of what happened in a certain night near a crime scene [[note]]they get tipped off that something is wrong when she can't remember even under hypnosis[[/note]] and fakes a breakdown afterwards to trick the killer to confess when reliving the moment. [[INeverSaidItWasPoison He told them about a cross that was on the inside of the door, somewhere that only the killer could see.]]
* In the ''Series/FraggleRock'' episode "Boober Gorg", Boober loses his memory after being hit on the head by a falling rock, and begins thinking he's a Gorg. The Gorgs are actually fooled too, but only because there were rumors of a sorcerer roaming the area and one of them coincidentally going missing, leading the Gorgs to jump to the wrong conclusion...
* ''Series/{{Monk}}'' once got temporary amnesia from a blow to the head. In the episode, his therapist did acknowledge that that kind of amnesia is quite rare.
* The ''Series/{{Castle}}'' episode "The Fifth Bullet" featured a case of this. Possibly subverted in that the character in question never recovers.
* Subverted on ''Series/KenanAndKel''. When the two go to the airport to pick up Kenan's friend's girlfriend, they accidentally hit her on the head. When she wakes up, she claims she doesn't have a boyfriend and leaves. HilarityEnsues as they try to find her and get her back. In the end, it turns out they got the wrong girl. It was also lampshaded when Kel attempts to get her memory back by hitting her a second time.
* ''Series/TheAddamsFamily'' episode "Amnesia in the Addams Family" is entirely about this.
* The "Angels Revenge" episode of ''Series/MysteryScienceTheater3000'' opens with Crow believing he has amnesia, and asking Mike to "clear it up" by [[TapOnTheHead hitting him on the head]] with a [[HyperspaceMallet large wooden mallet]].
-->'''Mike:''' So, Crow, about this amnesia of yours...\\
'''Crow:''' Oh, it's terrible, Mike. The list of things I can't remember is endless! I can't remember you, I can't remember Cambot, I can't remember Fisk's home run off the foul pole in the bottom of the 12th in Game Six of the '75 World Series!\\
'''Servo:''' ''[working a crossword puzzle]'' Okay, 'Mythical beast', eight letters, beginning with...\\
'''Crow:''' Minotaur.
* ''Series/TheFugitive'' episode "Escape Into Black" has Richard Kimble getting amnesia from an exploding stove, making him forget he's a wanted felon and thus vulnerable to capture.
* The [=UnSub=] in the ''Series/CriminalMinds'' episode "Tabula Rasa" got amnesia after falling off a building and being put into a coma for three years.
* An ''Series/IDreamOfJeannie'' episode has Jeannie getting amnesia from a bump on the head, and forgetting that she's a genie.
** In another episode, Tony bumps his head and forgets that Jeannie is a genie. He almost marries her, but another bump makes him recover.
* Peter spends most of season two of ''Series/{{Heroes}}'' [[TrappedByMountainLions running around Ireland]] without his memory. He gets it back around the time he rejoins the main plot thread of the season. In this case, the amnesia was the result of the Haitian using his MindWipe ability on him.
* Used in an episode of ''Series/MyNameIsEarl''. Earls old buddy Sweet Johnny (cause he’s the sweetest guy anyone knew) is convinced by Earl to keep doing dangerous stunts that leave him laid up... so Earl can bang his girlfriend. After twice trying to confess, he finds out it wasn't his fault. Johnny bashed his head into a drawer, which resets his memory to the same day every time. Slightly subverted as there is no magic fix. After trying to kill himself, Johnny simply knocks himself out, resetting his memory once again. Earl finally resigns to the fact that this is the one list item he can never cross off. He circles it instead.
* ''Series/AreYouBeingServed'': Subverted in the episode "Memories Are Made of This;" Mrs. Slocombe gets hit on the head with a golf ball, and [[spoiler: uses the opportunity to pretend to have lost all her memories past the age of 5 so she can get a free coat]].
* An episode of ''Series/HumanTarget'' has the client lose his memory in a car bombing incident right as the team was about to meet him. Thus, they know almost nothing about him except that he's being targeted for murder, which is one more thing than he knows.
* In the ''Series/LoisAndClark'' episode "All Shook Up", Clark attempts to destroy an asteroid heading for Earth by [[RammingAlwaysWorks ramming into it]], only to fall back to Earth and lose his memory. The asteroid is delayed on its mission due to destroy all life on Earth in a few days, but Superman didn't get it sufficiently pushed off its course -- and he's nowhere to be found. Everyone wonders where their hero is, including the amnesiac Clark. His parents try to explain to him that ''he'' is Superman. His dad succeeds by trying to hit Clark with a bat and having it shatter. He can't re-learn to fly in a few days, though. Eventually, just as all seems lost, [[StatusQuoIsGod he regains his memory and pushes the asteroid out of the way]]. Like a number of ''Lois and Clark'' episodes, this is based on [[Series/TheAdventuresOfSuperman the 1950s television series]] with George Reeves. This one is from the 1953 episode [[Recap/TheAdventuresOfSupermanS2E12PanicInTheSky "Panic in the Sky"]].
* In the ''Series/KnightRider'' episode "Knightmares", Michael loses the last few years of his life. This is particularly stressful for him given that in that time he's acquired a) a completely new identity b) a new ''face'' and c) a partner who's a talking car.
* ''Series/TheLegendOfDickAndDom'' has an episode, "Forget Me Nuts", where all the characters (including a mysterious one we have not seen before) wake up with no memory and have to try and work out who they are, what happened, and what they need to do next. By the end, they have [[spoiler: managed to get the BigBad to lose his memory too]], and convinced him that he is a travelling sandal saleswoman. [[SugarWiki/FunnyMoments And then the narrator loses his memory.]]
* In the ''Series/{{Andromeda}}'' episode "Music of a Distant Drum" [[TokenHeroicOrc Tyr]] gets this from some NanoMachines, his Nietzschean immune system eventually fights them off but in the meantime he becomes somewhat attached to the fisherwoman who finds him.
* Happens to Cousin Larry on ''Series/PerfectStrangers'' after he falls down the stairs. HilarityEnsues.
** Balki coaching Cousin Larry on how to introduce himself...
-->'''Balki:''' Hello, My name is Cousin Larry Appleton.\\
'''Larry:''' Hello, My name is Cousin Larry Appleton.\\
'''Balki:''' How are you?\\
'''Larry:''' ''[in a sad tone]'' Fine.\\
''[Balki sighs]''
* Cole on ''Series/{{Tracker}}'' recovers his memories fairly quickly in "Remember When". He lost them when he was zapped while working on his life force collector machine. Like the ''Series/DueSouth'' example, it was an excuse for a clip show.
* Averted with ''Series/{{CSINY}}''. Mac has a kind of amnesia called aphasia due to his being shot in the back. He remembered most things but forgot random everyday words. It took several months for him to recover, though he's nearly there now.
* Averted on ''Series/{{Chuck}}''. In the series finale, [[spoiler: Sarah's memory is virtually destroyed by the faulty Intersect 3.0 after she is captured by [[BigBad Quinn]] and forced to Flash repeatedly, which he then uses to brainwash her into working for him. Even after the team helps her throw off Quinn's influence, there is no way to restore her memory again after Chuck uploads the sole remaining copy of the Intersect himself to save a theater full of people from being blown up by a bomb. Although there are fragments of memories remaining that strongly imply she could eventually recover some of what she lost, the series still ends on a somewhat ambiguous note over her future.]]
* Happens to the Governor in one episode of ''Series/TheSlammer''.
* In ''Series/VazelinaHjulkalender'', Santa gets Easy Amnesia from hurting his head in the sledge crash. The injury didn't cause any permanent damage. In fact, it didn't even knock him unconscious.
* Averted on ''Series/MagnumPI''. In "Try to Remember", Thomas isn't just bopped on the head. He is in a terrible accident in the middle of a missing persons case, and has a serious concussion among various other injuries. When he wakes up, he has no difficulty remembering who he is, but not what happened immediately prior to the wreck, and he is the prime suspect in the murder of the woman he was supposed to find.
* Something similar happens in the ''Series/{{Batman}}'' series with King Tut, an archaeology professor who gained a NapoleonDelusion after a bump to the head. Being knocked on the head again restores his sanity and true personality, but sadly for him, he tends to relapse (and make return appearances) just as easily.
* ''Series/{{ALF}}'' gets it after a bump on the head [[note]] originally it was using an egg beater in the tub to make a hot tub, but some kid tried it in RealLife and it had to be [[Bowdlerize Bowdlerized]] [[/note]] and thinks he's an insurance agent named Wane Shlaygil (he was reading insurance brochures right before the bump), triggering the FlashbackEpisode.
* Harry from ''Series/ThirdRockFromTheSun'' gets it after getting sucked into a tornado. Not from the crash, [[RuleOfFunny but from a flower pot falling on his head.]] Which leads to him finding out that AliensAmongUs, [[HilarityEnsues but not knowing he's one of them.]] He gets better after getting [[LightningCanDoAnything hit by a lightning bolt.]] The lightning cure might be justified with the chip in his head.
* ''Series/TheNewAvengers'': A variant in "To Catch a Rat". A agent suffering crippling injuries in an attempt on his life and loses all of his memories. Unlike most uses of this trope, his memory stays gone for 17 years. The Easy Amnesia comes into play when a blow to his head (from a child's swing) restores his memory instantly.
* In the ''Series/ShiningTimeStation'' episode, "Stacy Forgets Her Name", Stacy Jones loses her memory after sniffing some flowers Mr. Conductor had sprinkled with a "Forgetting Dust" in order to shoo away some bees. Her nephew, Dan, and Mr. Conductor help jog her memory, and she makes a full recovery after taking a nap.
* ''Series/{{Sisters}}''. Second-oldest sister Teddy doesn't remember anything about her life after being shot in the head. But within one episode that only takes place over several days, she regains her memory and never again suffers any ill effects from her injury.
* Subverted on most [[SoapOpera soap operas]]. While characters being injured and not remembering anything about their past life is a very common plot, the recovery is somewhat realistic--occurring over a period of time, with intermittent flashbacks.
** Completely averted with ''Series/GeneralHospital'''s Jason Quartermaine after he suffered brain damage in a car accident. When he woke up not remembering anything about his life beforehand, viewers naturally assumed this trope would play out. Only for him to never remember anything and adapt a completely new identity as Jason Morgan.
* The whole point of ''Series/{{Blindspot}}'' is a woman being found in a large bag in Times Square, her body covered in fresh tattoos and her completely lacking in memory. The doctor examining her explains that her body was flooded with an experimental drug capable of causing temporary memory loss. She eventually starts getting flashes of her past. [[spoiler:It turns out she agreed to the procedure as part of a highly complex BatmanGambit by her adoptive terrorist mother. In Season 2, she zaps her brother with the same drug, but he only gets a single dose and eventually recovers all his memories, extremely pissed at her]].
* The ''Series/PowerRangersInSpace'' episode "T.J.'s Identity Crisis" had T.J. suffer an injury that made him forget who he was and that he was the Blue Space Ranger.
* ''Series/{{Shoestring}}'': Keith Amery from "Where Was I?" falls and hits his head on a rock. He isn't knocked out and starts running again almost immediately, but it's enough to give him total retrograde amnesia. He gets his memory back on time for the climax.
* ''Series/TheTimeTunnel'' episode "The Death Merchant". Tony is knocked unconscious by an artillery explosion and wakes up with amnesia. In a fight near the end of the episode, he's knocked unconscious again. When he comes to, his memory has returned.
* Subverted in ''Series/HeidiBienvenidaACasa'': After Toro finally asks Clara to be his girlfriend, he immediately falls down and hits his head. Given the timing and the soap opera nature of the show, one would assume that he just lost his memory of asking Clara. However, he turns out to be perfectly fine.



[[folder:Newspaper Comics]]
* ''ComicStrip/ModestyBlaise'': In "A Present for the Princess'', Willie loses his memory after hitting his head on a rock in the river, although he retains all of his skills. This leads to a CriminalAmnesiac situation.
[[/folder]]



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