History Main / TwoHalvesMakeAPlot

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Closely related is an everyday object - a business card, a dollar bill, a coin, a plastic token, etc - that has been torn/broken in half as a means of identification; as it's extremely unlikely that another broken object will match up with either piece, it can be used as a relatively secure equivalent of a TrustPassword.

[[folder: Anime and Manga ]]

* ''[[Anime/LupinIIITheSecretOfTwilightGemini Secret of Twilight Gemini's]]'' plot centers around the search for both halves of the eponymous diamond. Lupin receives the first half from [[spoiler: his old mob boss]] Dalune, who tasks him with finding the other half. Which is eventually revealed to be [[spoiler: held by [[RebelliousPrincess Lara]], Dalune's granddaughter.]]

* ''Anime/TheCastleOfCagliostro'' has two rings, both have been inscribed with "Capran". Princess Clarisse and her uncle, Count Cagliostro, both have one. The rings have been passed down for generations, the "Light" and "Shadow" sides of the family. When held together, the rings combine to form a new inscription, but wearing the rings means that Lupin can't read it. [[spoiler:"When light and shadow are joined, face the Goat on high who faces the sun and tells time, and place me in his eyes."]] The inscription tells Lupin how to use the two rings to reveal the secret of the Castle of Cagliostro.
* In ''Anime/ACertainMagicalIndexMiracleOfEndymion'', Shutaura Sequenzia carries a broken bracelet as a TragicKeepsake from the plane crash that killed her father. She gets shocked when she runs into Arisa Meigo and finds that she carries the other half, even though they have never met before. [[spoiler:It turns out Arisa was [[LiteralSplitPersonality spawned from Shutaura]] during the plane crash and took the other half with her. When the two become one again, the bracelet becomes whole.]]
* In ''Manga/GunsmithCats'', Bean Bandit is given a half a dollar bill signed by a New York drug distributor when he accepts a high-value run. The majority of the resulting arc involves him being challenged and/or assaulted for it, as whoever shows up at the meet with the half-bill will be able to walk away with several million dollars in drugs.
* ''Literature/SoICantPlayH'': According to prophecy, the legendary sword "Gram" will appear when [[AnotherDimension Grimwald]] faces great peril. It was split in two and passed down among Grimwald's top ranking [[BlueBlood Houses]]: the Restall Family which guards the female lineage and the Galdrblog Family, which protects the male half. Lisara is the heiress of the Restall House and used her half of the sword to form a provisional contract with Ryosuke; not realizing the other half lay dormant inside his body and, thus, unwittingly reforged the blade.
* In ''Anime/PokemonTheOriginalSeries'', it's revealed that Ash and Gary [[WeUsedToBeFriends used to be friends]] (and neighbors), until one day when they found an old Poke Ball and fought over it, breaking it in half. It turns out each kept his half of the ball.

[[folder: Comic Books ]]
* ''ComicBook/{{Commando}}''. Just before World War 2 three triathlon athletes (two Brits and a German) are selected by an elderly Norwegian to recover the usual lost treasure. He gives each man a map with parts of it excised so they will have to work together. Circumstances force them to turn back, but during the war the German--now part of the occupation forces in Norway--captures the other two--there as British commandoes--and forces them to help him recover the treasure. He'd already tried to get the treasure's location from the Norwegian but he "died under interrogation".
* In the [[ComicBook/DisneyDucksComicUniverse Disney comic]] ''Il tesoro di Sierra Leone'' Uncle Scrooge comes upon a talkative parrot who knows the location of a treasure. He only manages to learn the name of the state where the treasure is buried before he must leave for a moment, and in the meanwhile [[TheRival Rockerduck]] comes along and learns from the parrot the name of the town, but not the state. Both reluctantly decide to pool their knowledge and find the treasure together.
* In Creator/BrianMichaelBendis's indie crime book ''Jinx'', a couple of grifters--one with a gun pointed at the other--happen to witness a car crash; the dying driver tells them about a car in a junkyard with a fortune hidden in its trunk. He tells one of them the name of the junkyard, and the other the license plate number, forcing them to work together to collect the reward. The book as a whole is a very deliberate homage to ''Film/TheGoodTheBadAndTheUgly'', right down to the structure; in one of the advertisements for the comic, [[AuthorAppeal characters have a film-school discussion]] about the meaning of the movie's title.

[[folder: Fan Works ]]

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

* In the remake of ''Film/{{The Parent Trap|1998}}'', Annie and Hallie both have half of the same picture and it's the only picture they have of their DisappearedDad or MissingMom. This is what makes them realize they are twins, even though they're rivals at this point. This kicks off the main plot, with them trying to get to know their respective missing parents.
* In ''Film/BedknobsAndBroomsticks'', Professor Brown has one half of the book that mentions the Substitutiary Locomotion spell, which appears to cut off just as it is about to mention the magic words that activate it. A bookseller has the other half, [[spoiler:and has been looking for Brown's half, thinking it has the spell. It turns out neither half has it.]]

* The ''wuxia'' ''Film/HeroesOfSung'' revolves around the ownership of two Imperial Royal seals, which ends up in possession of the heroes and the villains. Naturally, both sides are eager to kill each other for the other seal.
* In ''Franchise/StarWars Episode VII: Film/TheForceAwakens'', Poe Dameron receives the map leading to [[spoiler:the now-reclusive Luke Skywalker]], but it's eventually discovered that the map is incomplete. Towards the end, the remaining section of the map is found inside [[spoiler:the shut-down R2-D2]].
* In ''[[Film/TheWholeNineYards The Whole Ten Yards]]'', the MacGuffin is a torn dollar bill, the first earned by a dead mobster; [[spoiler:it's actually torn in such a way that each half only has half the ''serial number'', which the mobster used to identify a $280 million account]].
* This is the true nature of the mysterious envelope that the main character of ''Film/PremiumRush'' is tasked with delivering. When he opens it up, he finds [[spoiler:a torn half of a movie ticket with a smiley face drawn on it. Turns out it's a voucher for another character's mother and son to illegally immigrate to the USA.]]

[[folder: Literature ]]
* In the Literature/EightySeventhPrecinct novel ''Jigsaw'' a gang of thieves made a map of where they were going to hide their loot, then tore up the pieces (two for each gang member) and entrusted them to various friends and relatives. The gang all died in a shootout with the police and the novel follows the detectives and various criminals trying to get the pieces of the treasure map to recreate it and find the loot. The story was adapted for the ''Series/{{Columbo}}'' episode "[[Recap/ColumboS10E09 Undercover]]".
* In the second ''Literature/{{Dinotopia}}'' book, Arthur Denison finds a strange key with a spiral pattern on the base. He tries it on a door in the World Beneath but it doesn't work, and it's determined that it's only half a key. The other half is in the possession of a woman named Oriana, who enabled Arthur to continue his expedition, and eventually becomes a LoveInterest.
* The ''Literature/FightingFantasy'' Gamebook, ''Literature/TheForestOfDoom'' have its Macguffin, the Maul of Stonebridge, dismantled into half, where the hero must recover both the handle and hammerhead.

* Parodied rather savagely in ''Literature/MonstrousRegiment''. [[spoiler: The father of Shufti's baby went off to be a soldier in the Borogravian army, and said he was going to break a sixpence in two pieces and give her one so they'd know each other, but either he never got around to it or (more likely) just plain forgot about her. When they meet again, Shufti has developed enough as a character to turn him down for his unfaithfulness... but not before reminding "Johnny" that he still owes her sixpence.]]
* In Creator/PhilipKDick's ''Film/{{Paycheck}}'', one of the [[ItMayHelpYouOnYourQuest random bits of junk]] the protagonist has in his position after a LaserGuidedAmnesia treatment is half a poker chip - this grants him entry to a gambling den where he can escape his pursuers.
* ''Literature/VillainsByNecessity'': The protagonists need the ''six'' pieces of the Spectrum Key for saving the world.

[[folder: Live Action TV ]]

* An episode of ''Series/XenaWarriorPrincess'' included the search for a large, hidden treasure with a treasure map that had been ripped into several pieces. The different people looking for the map were forced to work together as they had memorized their portions of the map and then destroyed them.
* ''Series/{{Bones}}'': In one episode the VictimOfTheWeek is a man that Cam used to live with. She wants to adopt his now teenage daughter, who was about 10 when Cam left. At the time Cam gave her half of a hugging kitties salt-and-pepper shaker set, keeping the other half and saying that whenever the girl looked at it and thought of Cam, Cam would be looking at hers and thinking of her. In the present day the girl claims not to remember Cam, but when Cam pulls out her half the girl runs upstairs to bring out hers too.
* In ''Series/LegendOfEarthsea'' each of the protagonists unknowingly hold onto a half of the Amulet of Peace, the MacGuffin necessary to literally close the door on a realm full of unspeakable evil.
* In the pilot of ''Series/TheInvisibleMan'', Darien Fawkes goes to meet a government agent at a public meeting place, and is given a torn business card so he and his contact can identify each other. Parodied in that he finds ''an entirely different'' handler (or possibly just another bewildered asset like himself!) before finding his own contact - it's such a common trick in such circles that there were at least one and perhaps more sets of cards wandering around that same area!
* In the ''Series/StarTrekTheNextGeneration'' episode ''The Chase'', an old professor of Picard's has discovered pieces of an algorithm in the genetic material of species on different planets--indicating that some [[{{Precursors}} incredibly advanced ancient civilization]] had seeded a message of some kind across a wide chunk of the galaxy. The ''Enterprise'' has several pieces and is searching for more when they run across the [[FriendlyEnemy Klingons]] and Romulans, who are also on the hunt. Each faction has multiple pieces, and together they have all but ''one''. The race to find the final piece drives the climax of the episode. Mildly played with in that nobody knows what the assembled solution actually ''does''; they just assume that any species powerful enough to set up a puzzle like this would probably hide something useful and/or powerful in it.
* Referenced in the series finale of ''Series/{{Friends}}'' when Chandler and Monica learn that the woman whose baby they're adopting is actually having twins. Chandler panics, feeling unable to handle two babies, and suggests they only take one but give the babies half a medallion each so they can find each other when they're older. Monica immediately shuts the idea down and insists they're keeping both babies.

[[folder: Music ]]

[[folder: Radio ]]
* Parodied in ''Radio/TheGoonShow'' episode "The Lost Gold Mine of Charlotte", in which the map to the mine gets torn into smaller and smaller pieces as more and more people get involved in the deal to find the mine and its treasure. [[spoiler:Not that there actually is any treasure.]]

[[folder: Tabletop Games ]]

* ''TabletopGame/CallOfCthulhu'' supplement ''Terror from the Stars'', adventure "The Temple of the Moon". The {{Player Character}}s and two independent villains each receive 1/3 of the Tablet of the Moon, a piece of gold jewelry that allows the user to find the location of a treasure on a map. The players must either defeat one or both villains and take their pieces or team up with them.

[[folder: Theatre ]]

* In ''Theatre/{{Annie}}'', her OrphansPlotTrinket is a half-locket left by her parents, who she assumes have the other half, so they can claim her when they find her again.

[[folder: Video Games ]]

* ''VideoGame/FinalFantasyV'', each of the two parallel worlds has one half of an ancient book. When the worlds merge, the two halves do likewise.

* In ''Spartan Ops'', the secondary campaign of ''VideoGame/{{Halo 4}}'', the Librarian gives Dr. Halsey an artifact called the Janus Key, which records the location of every Forerunner relic in the galaxy. The device is activated by connecting the two halves, and in the scuffle after the reveal, [[DragonInChief Jul 'Mdama]] gets one half while Spartan Thorne gets the other.
* In ''VideoGame/HollowKnight'' In order to unlock the path to the true ending, the knight must obtain the Kingsoul, a legendary charm that symbolizes a "union between higher beings". The first half is obtained from the White Lady in the Queen's Gardens after some difficult platforming and a tough boss battle, and the second half is found in the White Palace inside the dream realm, after an even tougher platforming challenge than any that came before.

[[folder: Visual Novels ]]

* Case 1-5 of ''Franchise/AceAttorney'' has this in the form of [[spoiler:the Evidence List[=/=]Ema's picture]]. Phoenix finds one half, Edgeworth has the other.

[[folder: Web Original ]]

[[folder: Western Animation ]]

* In the ''WesternAnimation/InvaderZim'' episode "Tak: The Hideous New Girl", when Dib's sister Gaz finds files containing Tak's plan we get this exchange.
-->'''Zim:''' I'm the only one with the technology to decode those files!
-->'''Dib:''' [[EnemyMine And we're the only ones with the files to be decoded!]]
* ''WesternAnimation/TheSimpsons'' episode "The Way We Weren't" has a younger Marge breaking in half a heart-shaped rock from the boy who turned out to be Homer after he apparently skipped out on a date with her. Homer found the other half after Marge had left. The two put the rock back together years later.
* The ''WesternAnimation/RockosModernLife'' episode "[[Recap/RockosModernLifeS2E1IHaveNoSon I Have No Son!]]" had Ed Bighead and his son Ralph keeping both sides of an old donut related to the event that damaged their relationship. When the two reconcile, they join the donut together.

* In ''WesternAnimation/PuppyInMyPocketAdventuresInPocketville'', the [[MacGuffin Friendship Heart]] is [[AccidentallyBrokeTheMacGuffin cleaved in two on accident by Zull]] when Eva gets him to steal it for her. Eventually he ends up with one half, leaving the other to Kate and the Royal Guards. The whole series revolves around Kate and her friends going on a quest to retrieve the other half of the Friendship Heart to bring Ava back to the Pocket Kingdom. [[spoiler:Eventually in the final episode, after so many Pocketville denizens are sent to their respectful children, Eva surrenders her half of the jewel to the Royal Guards, ending up in her and her gang's arrest (though they are later pardoned because of a national holiday) and Ava to return home.]]

* In the ''WesternAnimation/SpongebobSquarepants'' special "Atlantis Squarepantis", Spongebob and Patrick find half of an amulet and bring it to a museum, where the other half coincidentally resides.
* In ''WesternAnimation/{{Gargoyles}}'', the Phoenix Gate was introduced this way. Goliath had one half, and Demona had the other. The halves are soon reunited, revealing the Gate's power of TimeTravel. The end of the episode shows how the Gate was broken in the first place: [[spoiler:a younger Demona, inspired by a human wedding, breaks the Gate and offers one half to Goliath as a token of love.]]

* In the Literature/EightySeventhPrecinct novel ''Jigsaw'' a gang of thieves made a map of where they were going to hide their loot, then tore up the pieces (two for each gang member) and entrusted them to various friends and relatives. The gang all died in a shootout with the police and the novel follows the detectives and various criminals trying to get the pieces of the treasure map to recreate it and find the loot. The story was adapted for the ''Series/{{Columbo}} episode "[[Recap/ColumboS10E09 Undercover]]".

* In the ''Anime/{{Pokemon}}'' anime, it's revealed that Ash and Gary [[WeUsedToBeFriends used to be friends]] (and neighbors), until one day when they found an old Poke Ball and fought over it, breaking it in half. It turns out each kept his half of the ball.

[[folder: Film ]]

* In ''WebVideo/TheAngryVideoGameNerd'''s crossover episode with ''WebVideo/PatTheNESPunk'', AVGN has a golden copy of ''VideoGame/NintendoWorldChampionships'', obtained from a Nintendo Power magazine prize giveaway, while Pat has a grey copy obtained from a Powerfest event. They both want each other's cartridge, as they would complete that rare game's collection, and compete for it by playing the game on a reproduction cartridge. [[spoiler:After finding out that NWC contained content recycled from ''VideoGame/SuperMarioBros'', ''VideoGame/RadRacer'', and ''VideoGame/{{Tetris}}'', AVGN destroyed the cartridges in a fit of rage (In reality, he only destroyed replicas and left the originals unharmed- and both cartridges actually belonged to Pat).]]