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[[caption-width-right:220:"At Tara in this fateful hour..."]]

The third book in Creator/MadeleineLEngle's Time Quartet series to be published, but chronologically the fourth. The Murry family, with Meg now married to Calvin and the twins in college, has reunited for Thanksgiving when Mr. Murry is informed by the President himself that they now have twenty-four hours to avert nuclear war.

Reciting a rune bestowed upon him by his in-law Mrs. O'Keefe, Charles Wallace summons the winged {{unicorn}} Gaudior, who takes him on a journey through time to seemingly random events, all connected by location and the name "Maddox". Their mission is to change several important "[[ForWantOfANail might-have-beens]]" to avert disaster in the present. The Echthroi, evil beings introduced in ''Literature/AWindInTheDoor'', beset them at every turn.

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!! This novel provides examples of:

* [[AbusiveParents Abusive Stepdad]]: Duthbert Mortmain in the Chuck arc, [[spoiler: ultimately responsible for Chuck suffering brain damage and coming unstuck in time, Beezie growing up into the hard, bitter Mrs. O'Keefe, and their grandmother dying of a heart attack.]]
* AfterTheEnd: The Projections. Both were possible futures after a nuclear war on Earth encountered during interdimensional travel. One was an apocalyptic wasteland with hideously mutated barely-sentient "humans", another one had some semblance of civilization with a city of concrete bunkers and [[GasMaskMooks gas-mask-wearing soldiers]].
* AmbitionIsEvil: The major sin of Gwydyr's line. Gwydyr himself chose to set himself up as a king over the People Across the Lake and to conquer the People of the Wind, while [[spoiler: his descendant Gedder's desire to dominate Vespugia is what ultimately created Madog Branzillo and destroyed the world.]]
* UsefulNotes/TheAmericanCivilWar: The setting for the Matthew Maddox arc, and the source of Bran's post-traumatic stress disorder, eventually leading to him settling in a new South American colony.
* ArbitrarySkepticism: The events of ''ManyWaters'' happen before ''A Swiftly Tilting Planet''. After a time-traveling adventure to thousands of years before the birth of Christ, you'd think that Sandy and Dennys would not be so incredulous. This is explained by the fact that L'Engle wrote ''Many Waters'' after ''A Swiftly Tilting Planet'', but for anyone reading the books in their chronological order this is just weird.
* {{Arcadia}}: The area where the Murrys live, in the past, when the People of the Wind lived in simple pastoral harmony.
* ArcWords: St. Patrick's Rune, invoked in each story arc in turn.
* ArtisticLicenseAstronomy: The following exchange takes place when talking about ''nuclear war''.
-->'''Gaudior:''' "You know some of the possibilities if your planet is blown up."
-->'''Charles Wallace:''' "It just might throw off the balance of things, so that the sun would burst into a supernova."
** Ah, but in this highly fantastical reality, stars are ''literally'' living, feeling, thinking entities that ''sing for joy''. Where everything, from the tiniest smaller-than-cells organism to the greatest galaxy is a vitally important, interconnected part of creation! The loss of one of its planets might well cause the Time-verse Sun to go dark... or even sacrifice itself.
* ArtisticLicenseHistory: The author has Madoc sailing to America "before Lief Ericson", and refers to him as being polytheistic. However, according to TheOtherWiki, the civil war following the death of Owain of Gwynedd, and the legend of Prince Madoc, took place ca. 1170, nearly two centuries after Leif Ericson. Moreover, at that time, Wales had been Christian for about half a millenium.
* ArtisticLicensePhysics: Even a full-scale nuclear war would not even blow up a planet. It would "merely" turn a good portion of the world (perhaps all of it) into an uninhabitable, or barely habitable, wasteland. The quote in the ArtisticLicenseAstronomy entry is especially curious, as the conversations with Sandy and Dennys, as well as the Projections, depict a more realistic result. That said, in the universe of the books there's more going on than simple physics.
* BabiesEverAfter: [[spoiler: Mrs. O'Keefe is glad that Meg and Calvin's baby will be born after all. And damn it, after this night they ''earned'' it!]]
* BadFuture: The "Projections" created by the Echthroi, in which they attempt to entrap Charles Wallace and Gaudior.
* BadassCreed: The Rune.
-->''"At Tara in this fateful hour,''
-->''I call on all Heaven with its power,''
-->''And the sun with its brightness, ''
-->''And the snow with its whiteness, ''
-->''And the fire with all the strength it hath, ''
-->''And the lightning with its rapid wrath, ''
-->''And the winds with their swiftness along their path, ''
-->''And the sea with its deepness, ''
-->''And the rocks with their steepness, ''
-->''And the earth with its starkness, ''
-->''All these I place ''
-->''By God's almighty help and grace''
-->'' '''Between myself and the powers of darkness!"''' ''
* BadassPacifist: The Rune itself, and everyone who uses it. Violence crops up from time to time (always regretted), but when invoking the Rune, characters are claiming "I will not do harm, but I ask all heaven with its power etc. to stand between me and evil, to see that I am in the right."
* BlackAndWhiteMorality: Mostly simple. If you're descended from Madoc you're probably a good guy, if you're descended from Gwydyr you're probably bad. [[spoiler: The major exception is Zillie, who is being manipulated by her cruel, ambitious brother and would rather be with someone else -- but letting Gedder bully her into marrying Bran would still spell disaster, though this is more due to the undue influence it would allow him to exert rather than "just" being her tainted blood. The plot of the novel basically hinges on making sure that Madog Branzillo is born from Madoc's lineage rather than Gwydyr's, and that the fledgling nation of Vespugia is cleansed of Gwydyr's influence.]]
* BodySurf: Charles Wallace surfing from person to person in various time periods makes up most of the narrative, in an unusual example of the hero employing this trope. Notably, however, he is not taking direct control of his hosts so much as submerging into their consciousnesses, observing events from their perspective and providing subconscious nudges toward certain actions. Meg, in turn, is basically doing the same with with Charles. [[spoiler: Chuck, after his brain injury permanently changes his perspective, does it too, with Matthew in the past, while Matthew does it with his twin brother and, eventually, with the combined strength of the various other actors, they manage to prevent Gedder from taking over Vespugia.]]
* BreakTheCutie: Beezie had a wonderful, loving childhood - and a horrific adolescence.
* BrokenBird: Mrs. O'Keefe, Calvin's bitter mother, [[spoiler: was once Beezie, before her father died, her abusive stepfather broke her brother's brain, and she married an equally-abusive man to protect her from him.]]
* BurnTheWitch: Averted. Zylle, accused of witchcraft, is sentenced to be hanged.
* CainAndAbel: Madoc and Gwydyr, two exiled Welsh princes who came to the new world. It eventually turns into one of many recurring motifs.
* CallBack: The first chapter alludes to the tesseract and farandolae of the first two books.
* [[CantArgueWithElves Can't Argue With Winged Unicorns]]: Sort of. Gaudior is generally right, but he admits that his pride and impatience aren't helping as the situation develops, and his lack of mortal perspective is generally held up as a bad thing.
* CombatByChampion: Madoc vs. Gwydyr in the Madoc arc. [[spoiler: Madoc wins, and exiles his brother from the land of the People of the Wind.]]
* CoolHorse: Gaudior, a unicorn who drinks starlight, flies through time, and can literally ask the wind for directions.
* CultureClash: In Brandon's arc, between the People of the Wind and the more-liberal, original Welsh settlers on the one hand and the hardline Puritans on the other. This is partly what trips up Zylle during her interrogation by Mortmain.
* DarkIsNotEvil: At least, according to ''Planet'', that's the way things began. Now, there's something wrong with both dark ''and'' [[LightIsNotGood light]].
* DemotedToExtra: Calvin, [[PutOnABus who's away on a business trip]] for the entirety of the book.
* DisneyVillainDeath: Played straight with [[spoiler: Gedder, who dies from a deadly fall after scrabbling on the clifftop to retrieve his fallen knife]].
* DomesticAbuse: It is heavily implied that Beezie's mother was a victim of it at the hands of Duthbert Mortmain, [[spoiler: then equally-heavily implied to be what turns her into Mrs. O'Keefe.]]
* DontYouDarePityMe: Discussed by Matthew and Bran, one with two useless legs and the other suffering from a permanently-injured leg and [[ShellShockedVeteran PTSD]].
* EvilSmellsBad: The Echthroi, as noted in ''AWindInTheDoor''. Also, Chuck Maddox can smell bad character or cruelty on a person the same way he can physical cancers.
* FakingTheDead: Gwydyr initially fakes his own death so he can try to become the king by consolidating power behind his unsuspecting brother's back.
* {{Foreshadowing}}: Mrs. O'Keefe often talks about something bad happening to "Chuck." [[spoiler: She doesn't necessarily mean Charles Wallace.]]
* FictionalDocument: ''The Horn of Joy'' and ''Once More United'', both novels by Matthew Maddox relating to time-travel.
* ForWantOfANail: Charles Wallace and Gaudior are attempting to avert the nuclear annihilation of the Earth by subtly nudging time around.
* GettingCrapPastTheRadar: It's heavily implied that Mortmain is making sexual advances at Beezie [[spoiler: before permanently damaging Chuck's brain. It's also implied to be why she ends up with the equally-abusive Paddy O'Keefe for "protection."]]
* TheGeneralissimo: "Mad Dog" Branzillo rules the fictional South American country pf Vespugia. The plot revolves around going back in time and changing events so that Branzillo [[spoiler: becomes a benevolent ruler instead.]]
* GenerationXerox: Certain patterns recur across the various periods in time that Charles Wallace visits, going all the way back to the conflict between Madoc and Gwydyr.
* TheGhost: Despite being at the heart of the narrative, "Mad Dog" Branzillo never directly appears on page. The closest we come is seeing his face and thoughts through the POV of various "seers" looking into the future.
* GoingNative: Madoc, an ancient Welsh prince came to the new world before Columbus and ultimately joined the Wind People. [[HeroicLineage His physical attributes recur among them for generations,]] [[OccultBlueEyes most notably his wide-set blue eyes.]]
* GoodIsImpotent: Somewhat averted. The "good" people are proactive, strong, and willing to face evil, at least to give it a stern talking-to. But the wicked people are tolerated in the communities because they have special talents - one woman who is racist against Indians is the best midwife in the village, and Gedder the would-be future dictator is a powerful force in helping the Welsh settlers adapt to Vespugia. Played straightest in the Chuck arc; their father is so nice that he makes a poor businessman, lending out too much credit, while Duthbert Mortmain, in all his cruelty, is able to keep the failing store in the black.
* HeatWave: This combined with a drought put the townsfolk in a witch-hunting mood with Zylle as the victim.
* HeroicLineage: A big theme, mostly involving the line of Madoc.
* HiddenDepths: From what you've barely heard about Mrs. O'Keefe in previous books, she sounds horrible. In this book, you find out how she got that way (and how she isn't so bad deep down).
* HiddenElfVillage: The Unicorn's hatching grounds, which is safe from Ecthroi and has never been seen by human eyes before Charles Wallace.
* IJustWantMyBelovedToBeHappy: Matthew is deeply in love with his brother's fiancee, [[spoiler: and ultimately spends most of his money to let her elope to South America to be with him. This act of love also helps save the world.]]
* IdenticalGrandson: Matthew and Bran for Madoc, Chuck for Brandon, etc.
* [[IdiosyncraticEpisodeNaming Idiosyncratic Chapter Naming]]: Named after the verses of St. Patrick's Rune.
* IncorruptiblePurePureness: Tends to get invoked a lot with those of the Madoc line.
* IndianMaiden[=/=]TheChiefsDaughter: Zyll and Zylle both fit parts of the archetype.
* InSpiteOfANail: Charles and Gaudior play around with numerous events in history, and the only one that seems to affect the present (or at least, THEIR present) is the one they want. Of course, since what they're doing is so subtle that even the characters involved don't usually realize what they've changed, they probably didn't adjust much.
* InTheBlood: See "BlackAndWhiteMorality" above. This is all but stated in as many words in the text; Charles Wallace's ultimate goal is to adjust history so that the leader of a certain nation [[spoiler: is descended from Madoc instead of from Gwydyr, changing him from a tyrant nicknamed "Mad Dog" to a benevolent ruler nicknamed "The Blue-Eyed."]]
** The Mortmains follow this trope as well: anything they touch, they corrupt or otherwise ruin.
** Subverted with Calvin, though, whose ancestors, the O'Keefes, include a guy who flings homeless puppies to death against walls, and Paddy, who is implied to be cut from the same cloth as [[AbusiveParents Mortmain]].
* KickTheDog: Jack O'Keefe literally kills homeless puppies by flinging them against the walls of barns to show off his muscles. Most of the evil characters are also some combination of racist, greedy, and abusive.
* LampshadedDoubleEntendre: Paddy's comment that Mortmain is "after" Beezie.
* LoveMakesYouEvil: If the visions of various prescient characters are to be believed, "Mad Dog" Branzillo's love for his mother drives his belief that the world is too cruel to be allowed to exist.
* MeaningfulName: The names "Maddox", "Bran", "Zilla", and their variations. Also the various characters named "[[ObviouslyEvil Mortmain]]", which means "dead hand" in French (something [[LampshadeHanging the characters actually notice in-universe]]).
* MentalFusion: Going "Within", where Charles Wallace "fuses" with several people to influence events.
* MightyWhitey: Played with. Madoc, a foreign prince, saves the People of the Wind from his brother, but he has completely abandoned his Welsh homeland and has no intention of ever returning. However, he is not generally held to be better than the People because of his race, and the only reason he has to be the one to beat his brother is because he doesn't want anyone to die.
* NeutralFemale: Zyll while Madoc fights Gydwyr; Zillie, later on, when Gedder fights Richard.
* NightmareFace: The hideous mutant Charles and Gaudior briefly encounter in a Projection.
* NobleSavage: The People of the Wind, who live in harmony with nature and with one another. However, as Gaudior bitterly notes, [[RealityEnsues our world is not kind to lovers of peace]].
* OneSteveLimit: Averted with Mattie and Matthew, Richard, Ritchie, and Rich Llawcae, Brandon and his namesake nephew, David and Davey Higgins, and most impressively, Zyll, Zylle, Zillie, and Zillah. Then again, most of this has to do with [[GenerationXerox history repeating itself]].
* {{Pegasus}}: Gaudior. However, when he takes flight, he hardly ever moves in ''space,'' but only through time. (The movement of the planet Earth itself throughout time is not accounted for.)
* PoliticallyIncorrectVillain: Pastor Mortmain, and pretty much anyone who takes his side during the Brandon Llawcae plot, being racist and close-minded about the local Indians.
* PregnantBadass: Meg, who isn't quite an ActionMom, but lends Charles Wallace her emotional strength on his journey.
* {{Pride}}: Charles Wallace's certainty in his own intellect and abilities almost causes disasters many times over, [[ContinuityNod just as it did in]] ''Literature/AWrinkleInTime''. [[spoiler: Ultimately, he [[CharacterDevelopment accepts that he isn't perfect and doesn't necessarily have all the answers]], just in time to escape a very subtle trap laid by the Ecthroi.]] Gaudior, too, eventually comes to understand and overcome his own disdain for "mortals" bound to time.
* PublicDomainCharacter: Madoc, whose legendary trip to America is discussed on TheOtherWiki. See [[http://en.wikipedia.org/wiki/Madoc here]]
* RealityIsUnrealistic: So, Branzillo, a South American dictator, is distantly related to the Welsh? Actually... not all that far-fetched, look around Argentina.
* TheReveal: Eccentric, impoverished Mrs. O'Keefe is descended from royalty (Queen Branwen of Britain, [[TheChiefsDaughter Zyll]]) [[spoiler: and through this line she is distantly related to "Mad Dog" Branzillo.]]
* {{Seers}}: The people Charles merges with tend to have some sort of clairvoyance. Possibly justified due to Charles' presence in their psyches, the fact that they tend to be descendants of the same line, or perhaps that's why he can target them at all.
* SetRightWhatOnceWentWrong: The plot of the novel, in an effort to prevent a dictator from kicking off World War III.
* SheIsAllGrownUp: Skinny, gawky, stringy-haired, bespectacled Meg became a beautiful young woman as she reached her twenties.
* SinisterMinister: Pastor Mortmain in the Bran arc, a HolierThanThou jerk who whips the settlers into a frenzied WitchHunt. [[spoiler: When the lightning rune is invoked at the end of the arc, it burns down his chapel, which the text notes was built more to his own vanity than to God's glory.]]
* SpellMyNameWithAnS: How do you even pronounce "Zylle" to make it distinct from "Zyll" and "Zillie"?
** Zyll=Zill; Zylle=Zeel
* SupportingProtagonist: On several levels: First, Charles Wallace is only going Within various people from the past, and only once is it explicit that he's even ''doing'' anything while being Within. Then, even when they finally reach 1863, [[spoiler: Charles Wallace is Within Matthew, who is having a vision of ''Richard,'' who is all the way in Vespugia, having the big fight with Gedder that the entire book has actually been building up to.]] And, of course, there's Meg, the actual viewpoint character, who views the whole thing through a telepathic link with Charles Wallace.
* {{Telepathy}}: "Kything," which is more like SharingABody. This is also Gaudior's main form of communication.
* ThemeNaming: In each of the time periods where Charles Wallace goes within, there is someone whose name is either a form of Charles (Chuck), or an anagram of Charles or Wallace (Harcels, Reschal, Llawcae). Also, note the various forms of Madoc, Zillah, or names that begin with Bran-, throughout each time period (excepting Harcels' time).
* ThereAreNoCoincidences: Invoked by Mrs. Murry at the end of the first chapter.
* TimeSkip: In the Harcels, Chuck, and Matthew storylines, lots of time passes quickly from Charles Wallace's point of view. [[spoiler: Most abruptly, Chuck's brain-damage almost disconnects Charles Wallace from his mind, and only by overcoming the temptation to leave him offered by a disguised Ecthros is he able to return.]]
* TwinTelepathy: Bran and Matthew Maddox are themselves kythers, able to tell what the other is thinking without direct communication.
* TwoLinesNoWaiting: Meg's back at the house, Charles is hopping around time.
* {{Unicorn}}: Gaudior. It deserves noting that he's ''very'' different from the unicorns depicted in ''ManyWaters'' in the same world -- he's bigger, he's more reliably (albeit still not completely) real, and he's telepathic. And has magic.
* WarIsHell: Bran's time as a Union soldier. He came in [[WarIsGlorious expecting to go out and fight like Sir Galahad to make men free]], and quickly found himself in a hellish war surrounded by much-less-clear motivations.
* WitchHunt: A literal one targets Zylle during the Bran arc.
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