[[quoteright:210:http://static.tvtropes.org/pmwiki/pub/images/demonslexcoveruk_5485.jpg]]

->In two worlds, there is nothing I love half as much as you.

In modern-day England, brothers Nick and Alan try to live a normal life. They get jobs, Nick goes to school ([[PromotionToParent at Alan's insistence]]), Alan has crushes on girls (and [[AllGirlsWantBadBoys girls have crushes on Nick]]).

Of course, Nick starts right off rescuing his favorite sword from under the sink (and don't think he won't use it), Alan could shoot you before you realized that sweet, smiling guy even knew what a gun was, they've got to watch out for mad Mum in the attic, and they're forced to pack up and move every time a magician or demon bursts into their house. Which is once every couple of months. At best.

Enter Jamie and Mae, a brother-sister duo who witness the latest demonic intrusion and need Nick and Alan's help: Jamie's been marked by a demon, a mark that lets a demon trace, hurt, and eventually possess him, leaving nothing of him behind. Alan wants to help them; Nick wants them out of his house. Naturally, brotherly arguments ensue.

Between running from, beating up, capturing, killing, and attempting to outmaneuver scheming magicians, of course.

''The Demon's Lexicon'' is written by debut author Sarah Rees Brennan. It's the first in a trilogy. The second, ''The Demon's Covenant'', was released in May 2010, and the third, ''The Demon's Surrender'', was released in June 2011.
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!!This series provides examples of:

* ActionMom - Surprisingly, [[spoiler:Annabel Crawford.]]
* AllGirlsWantBadBoys: Mae does, at least.
* AndIMustScream: Being possessed by a demon is this. Imagine being trapped in your body, unable to speak, as a foreign presence invades you and takes over your autonomy. First there's the fighting, the refusal to capitulate, and the demons love that. They respond with torture, every form of mental and emotional and not-quite-physical pain, and you can't even cry out because you have no voice any longer. Then you beg, you plead, for a reprieve from the pain, for your soul back, but demons have no empathy to be moved by human grief. The only thing left is to strike a bargain, but there's no bargain you can make that the demon won't win.
* AntiHero - Nick. Will he wantonly slaughter evil magicians to save your brother? Yes. But only because Alan asked him to.
* AscendedExtra: Sin goes from being in a single scene in the first book, to being a minor character in the second, to being the point of view character in the third.
* BadDreams - A side-effect of a second-tier mark, in which the demons let you know that they're coming for you.
** Mae starts to get them in ''The Demon's Covenant'' and eventually realizes that it's the demon Anzu trying to scare her out.
* BadassBookworm - Alan is the absolute epitome.
* [[BadassFamily Badass Families]]: Alan and Nick, Mae and Jamie.
* BadassNormal - Mae, full stop.
* BedlamHouse: The House of Mezentius, an institution for restraining demons possessing humans until they wear down the human body and it dies. Relatives of the possessed pay Mezentius House large sums of money for their upkeep and even more for the chance to spend their loved one’s final days with them.
* BelligerentSexualTension: Jamie and Seb. Alan and Sin, sorta.
* BerserkButton: Don’t threaten Nick’s people if you value any of your body parts.
* BigBad - Black Arthur and the Obsidian Circle. [[spoiler:Anzu and Gerald seem primed for this role in future books.]]
* BigBrotherInstinct: Alan and Nick both [[spoiler: despite not being biological brothers]]. Mae towards Jamie.
* BittersweetEnding: [[spoiler:Alan is saved from possession and the Obsidian Circle is defeated, but the Market must become what they've fought for so long, sacrificing humans to demons in order to win.]]
* BlueAndOrangeMorality: The demons, best exemplified by Nick.
* BreakTheCutie: Jamie. To an extent, Seb.
* BuxomIsBetter - Mae, according to Nick's lingering eyeballs.
** [[CrowningMomentOfFunny "Thanks. I grew them myself."]]
** Also, Sin, who is described as having curves and using them.
* TheCallKnowsWhereYouLive: Alan and Nick have always been barely one step ahead of the sorcerers and their demons, but when Alan gets marked the demons can track them now, and there's no escape.
* CannotCrossRunningWater: Possessed bodies ''can'', they just don't like to because it can trigger [[spoiler:extreme nausea, vomiting, dizziness, fainting, and dissociation]].
* CannotSpitItOut: Nick, often quite literally, because he has such difficulty with words and expressing feelings.
* CannotTellALie: Demons are incapable of doing so. [[spoiler:And Nick does so casually mention he never lies.]]
* CantHoldHisLiquor: Jamie.
-->'''Jamie''': You said not to have another drink. And do you know what I think? I think you were right.
** and:
-->'''Jamie''': You are my friend.
-->'''Nick''': Yeah, I am.
-->'''Jamie''': [[CrowningMomentOfFunny But these stairs. They are not my friends.]]
* {{Catchphrase}}: Mae says "Uh" a lot.
* CatsAreMean: Alan once tried to adopt a cat, but it didn't take to Nick [[spoiler:because he's a demon]].
* TheChessmaster: Hello, Alan.
** By the time ''The Demon's Surrender'' ends, it's clear Mae is becoming a Chessmistress skilled enough to rival Alan.
* ChildProdigy: Daniel Ryves's journal reveals Alan was teaching himself dead languages when he was still pre-puberty.
* CodeName: A one-time brush with discovery results in Alan and Sin calling each other Clive and Bambi. They turn this into a RunningGag.
* ConsummateLiar - Alan, to the point where speaking the truth - even simple truths with no potential whatsoever for harm - is uncomfortable and pained.
* ContrastingSequelMainCharacter: Nick and Sin are both from poor backgrounds with dead parents and Sin is a black girl, but in between them is Mae, whose family is quite wealthy.
* CoolBigSis: Mae, who's protective of and close to Jamie.
** Sin is very aware of this. When she goes to pick Lydie up from school, she notes that it can't hurt to have her sister's classmates know that she has a cool big sis.
* CorruptTheCutie: Book three plays with this with Mae and Jamie.
* CoversAlwaysLie: Book one has Nick on the cover, which makes sense as he’s the narrator and protagonist. But then book two has Sin, whose POV book is the third, and book three has Alan on the cover, who doesn’t even get his own point of view narration. Poor Mae.
** One edition of the second book, however, does have Mae on the cover.
* CreepyCrows - Crop up in the kitchen fairly early on, as demon-controlled attackers.
* CycleOfRevenge: Jamie argues it must be broken to change how magicians and non-magicians interact, and [[spoiler:makes Mae promise not to exact any further revenge for their mother’s murder]].
* DangerousSixteenthBirthday - Sixteen is when you become fair game for demon possession.
* DeadpanSnarker: Pretty much everyone, but most notably Mae, Jamie and Nick.
* DealWithTheDevil - Magicians by definition, but Black Arthur takes this to an art form, sacrificing [[spoiler:his wife and then-unborn son]] for a tremendous amount of power. [[spoiler:Pity it didn't work.]]
* DefrostingIceQueen - King, in Nick's case. Slowly and with great difficulty.
** Liannan is an interestingly literal (if brief) example.
* DemonicPossession - Right there in the premise: it's what gets demons to help out magicians - nice human bodies to hang around in (for as long as they last).
* [[DidYouJustRomanceCthulhu Did You Just Romance a Demon]], Mae?
* DisabledLoveInterest: Alan to Sin. It’s one of the things they need to work through, because Sin has always looked down on Alan on principle for this reason.
* DisabledMeansHelpless: Very, very strongly averted with Alan.
* DisproportionateRetribution: How does Nick respond to [[spoiler:Alan being possessed]]? Oh, only setting the entire River Thames on fire.
* DoesThisRemindYouOfAnything - When Jamie starts to tell Annabel that he is a [[spoiler: magician]] she nervously says that they had the [[ComingOutStory same conversation when he was thirteen]] and reminded him that she was fine with his sexuality.
* TheDragon: Gerald starts out as Black Arthur’s Dragon, then in book three becomes Celeste’s. [[spoiler:[[TheStarscream Temporarily]]]]
* DyingMomentOfAwesome - [[spoiler:Olivia]]
* EeriePaleSkinnedBrunette: Nick.
* EldritchAbomination: Demons in their true forms, which aren't even ''described''.
* EmbarrassingFirstName: Mae is short for Mavis.
* EmpathicEnvironment: Before [[spoiler:Nick]]’s powers are sealed, his mood swings can bring on storms. [[spoiler:At one point one of the storms results in the deaths of two bystanders.]]
* EmptyShell: [[spoiler:Nick]]'s body when he vacates it, as it never had a soul of its own.
* EtTuBrute: Mae and Sin spend much of ''The Demon's Covenant'' that [[spoiler:Nick will kill Alan and end the world if Alan betrays him]].
* EvenTheGuysWantHim: Nick, who responds to being checked out by gay Jamie by not making an issue of it because most people find him attractive.
* EvilIsNotAToy: Gerald.
* [[EvilSorcerer Evil Magician]]: Several, but most notably Black Arthur and Gerald.
* {{Exorcism}}: Although in this case, Exorcism doesn’t mean casting out a demon so much as naming a demon and commanding it - sometimes to leave, sometimes to do something else entirely.
* FaceOfAThug: Nick. [[spoiler:Largely on account of the whole violent demon in a human body thing.]]
* FishOutOfWater: Most of Nick’s tension with other characters is a result of him being this.
* FiveManBand - While Mae, Alan and Jamie's roles are very obvious, Nick and Sin both have elements of TheLancer AND TheBigGuy. Before Sin joins the group, Nick fills both roles.
** TheHero - Mae
** TheLancer - Nick and later Sin
** TheSmartGuy - Alan
** TheBigGuy - Nick (or possibly Sin)
** TheChick - Jamie
** TheSixthRanger - Seb
* {{Foreshadowing}}: The first book is chock full of hints that [[spoiler:Nick is a demon. He has difficulty speaking and even more difficulty reading; his impulses are towards violence and he has a hard time understanding other people's emotions, much less his own; crossing running water sends him into violent fits; and his talisman burns him and feels like a collar]].
* FreudianExcuse - [[spoiler:Gerald and Seb, possibly many more magicians as well.]]
* FriendToAllChildren: Alan is good with kids.
* FriendsWithBenefits: Nick and Sin were this before [[spoiler:Sin found out Nick is a demon]].
* GainingTheWillToKill: Mae spends much of the book working up the commitment to save her brother, whatever it takes, climaxing when she finally kills a magician to paint over Jamie’s mark.
* GambitPileup - The climax to ''The Demon's Covenant''
** Taken even further in ''The Demon's Surrender''
* GeometricMagic: Summoning circles rely on geometric symbolism.
* GlowingEyesOfDoom - [[spoiler:Jamie in the third book. Later, Gerald as well.]]
* GoodIsNotNice: The Goblin Market is the only resource people victimized by demon’s and magicians have, so why not turn a profit?
* GunsAreWorthless: They only work sometimes, if a magician isn’t enchanted to protect against bullets. Because of the superiority complex most magicians have, many don’t bother.
* HasTwoMommies - Matthias the piper. Mentioned very briefly when he arrives with them to tour the Goblin Market at the end of ''The Demon's Surrender.''
* HatesBeingTouched - Nick. Attempts at familiarity (unless you're Alan) will probably end with a knife in the offending body part.
* HazyFeelTurn: Sin spends much of ''The Demon's Surrender'' in the dark on the others' plans, and unsure whether she can trust the others at varying points due to various revelations.
* HeWhoMustNotBeHeard: Demons possessing human bodies are incapable of speech, partly because they have no concept of language and partly because the body is fighting the possession in the only way it can.
* HeroesPreferSwords: And Nick keeps his favorite under the kitchen sink.
* HumanoidAbomination: Some demons are fond of assuming human-like form, with just enough minute differences to make the effect disturbing rather than comforting. Liannan, for instance, is unspeakably beautiful but has razor teeth and no eyelashes.
* HumansAreBastards: The magicians’ justification for why they treat non-magicians as no better than livestock: most of them were rejected or abused by their family when their powers became known.
* IAmWhatIAm: [[spoiler:Jamie]]'s character arc involves coming to terms with being a magician.
* IKnowYourTrueName: To exorcize a demon is to name it and command it. Conventional belief holds that you must know a demon's ''true'' name, but demons don't have true names; they respond to them because humans believe them to be true.
* ImprobableAimingSkills - Alan doesn't miss.
** Neither, for that matter, does Nick.
* IncestIsRelative: In a deleted scene revealed during the TDS launch chat, [[spoiler: Anzu]] kisses Nick [[spoiler: while in his brother Alan's body]]. It's noteworthy that demons don't care for taboos like incest and probably can't differentiate between sexual and platonic feelings.
* InterspeciesRomance: [[spoiler:Mae and Nick]].
* ItNeverGetsAnyEasier: Mae is relieved to discover this is the case for her.
* JerkWithAHeartOfJerk: Nick, although by the end he’s arguably beginning to develop a HiddenHeartOfGold. Arguably.
* {{Jerkass}} - Nick looks like one for most of the book, possibly overlapping with JerkWithAHeartOfGold, albeit a laser-guided heart of gold.
* KarmaHoudini - [[spoiler:Helen avoids any repercussions for killing Annabel by switching sides at an opportune time. Rather disturbingly, it seems like we're supposed to support this.]]
* KickTheDog: Nick, the ostensible hero of book one, pulls one of these on Mae, trying to coax her into admitting she’s glad her brother was marked for demonic possession.
* KidWithTheLeash: [[spoiler:Alan raised a demon while only a child himself.]]
* KissOfDeath - [[spoiler:Olivia snuggles up to Black Arthur for a kiss, then sets herself on fire while still holding on to him. Subverted that this doesn't kill him straight off - his son does that a few minutes later.]]
* KnifeNut - Nick. Another character points out that he carries the equivalent of a restaurant's cutlery drawer on him at all times. Sin embodies this trope, as well.
* LaserGuidedAmnesia: The shock of being thrust into a developing fetus's undeveloped mind wiped [[spoiler:Nick]]'s memories of his life before.
* LastSecondChance: Jamie tries to offer [[spoiler:Gerald]] one.
* LeakingCanOfEvil: [[spoiler:When Nick removes his talisman, his magic seeps out and affects the world around him. If he's feeling particularly strong emotions, the talisman won't stop even that.]]
* LightIsNotGood: The Aventurine Circle wears all white, but they’ll feed people to demons just like any other magician circle.
* LonersAreFreaks - Nick does try to fit in with the kids at school...sort of. It doesn't really take.
* LongLostRelative: Inverted. [[spoiler: Alan and Nick actually aren't brothers.]]
* LouisCypher: [[spoiler:Nick was the name Alan chose because it sounds like the demon name Hnikarr.]]
* LoveMartyr: Alan, to an extreme.
-->“I’m not scared of being hurt. I’m scared of what he’ll do. He could tear himself apart or tear the world apart, and next to those two choices what happens to me doesn’t matter at all.”
* LoveRedeems: Nick's love for Alan, and eventually for Mae and Jamie, is precisely what makes him an AntiHero rather than outright villainous in the first place. And it's their love that allowed Nick to slowly begin to learn how to be human.
* MagicDance: Dancing up a demon. Sin is the best dancer at the Market.
* MagicMusic: There are pied pipers as well as magicians, and they feed their magic off the vitality of people responding to their music.
* MagicIsEvil: At least if you ask the people of the Market.
* AManIsNotAVirgin: Nick once slept with a teacher to get a passing grade. [[spoiler:Sin also notes Alan is no stranger to waking up with a girl in his bed.]]
* ManipulativeBastard: And Alan again....
* [[MasterActor Master Actress]]: Sin is a performer, and she treats the world as as much of a performance as dancing. She knows how to act to maximum effect to get what she wants.
* MayflyDecemberRomance: [[spoiler:Mae and Nick, with the implication that he'll keep living even after his host body dies.]]
* MeaningfulEcho: "Two worlds."
* TheMole: [[spoiler:Phyllis]]
* MoralityChain: Alan, Mae, and Jamie to Nick.
* MrFanservice: Nick spends an awful lot of time being shirtless and good-looking.
* MultilayerFacade: Sin as three primary identities she uses for different situations: Sin, the alluring and exotic dancer of the Goblin Market; Thia, the darling Market princess who grew up among them and is loved by all; and Cynthia, the quiet, reserved schoolgirl who certainly wouldn't be hiding anything you need to examine more closely.
* MurderIsTheBestSolution - Nick certainly thinks so. With certain magicians, he's generally [[AlwaysChaoticEvil right]].
* MyGirlIsNotASlut: Strongly averted with Mae and Sin, who flirt with multiple guys, are implied to have had several boyfriends, and whose sexuality is celebrated by the narrative.
* NaiveNewcomer: Jamie and Mae throughout much of the first book.
* NeurodiversityIsSupernatural: Nick is dyslexic and alexithymic [[spoiler:because he’s a demon]].
* NoSocialSkills: With Nick, played for comedy as well as drama.
* NurtureOverNature: It was being loved unconditionally that allowed [[spoiler:Nick]] to begin developing attachments to the world and something resembling a heart.
* OddFriendship: Nick and Jamie.
* OffingTheOffspring - [[spoiler:Olivia tried to drown Nick as a baby. Cue Alan's PromotionToParent.]]
** Add in [[spoiler:Black Arthur's attacks]] and [[spoiler:Daniel Ryves, in baby Nick's bedroom, with an enchanted knife]]...this positively abounds.
* OurDemonsAreDifferent: Incomprehensible supernatural entities from a parallel universe that’s a cold, bleak wasteland. They only seek the warmth and vitality of the human world, but view humans themselves as insects. They have no spoken or written language and while it’s indicated that they do feel emotion, their understanding of emotion is vastly different from how humans understand them.
* ParentalAbandonment - Nick and Alan's parents aren't exactly around. Their dad's dead and their mum's mad, to start with. [[spoiler:Well, Alan's dad and Nick's mum, respectively. Alan's mum is also dead and Nick's dad is the BigBad.]]
** On a much more normal level, Mae and Jamie's parents didn't pay them much attention even when they were still together. Their dad dislikes Jamie for being gay and avoids Mae for being odd. Their mum, whom they live with, although she loves them, doesn't have much time for them.
* PerkyGoth - Mae has pink hair, wears corsets and bat jewelery, and almost always has a smile on her face.
* PossessionBurnout: What happens to those who are DemonicallyPossessed.
* PowerLimiter: At the end of ''The Demon's Covenant'', [[spoiler:Alan has Liannan place one on Nick, cutting his power in half and restricting him to the body he's already in]].
* PromotionToParent - Alan raised Nick more or less on his own [[spoiler:ever since their mother tried to drown Nick as a baby]]. Mae's got a lesser degree of this going for Jamie. Sin to her younger siblings.
* ReplacementLoveInterest: Sin for [[spoiler:Alan]].
* RomanticFalseLead: Seb and Alan for Mae.
* RotatingProtagonist - Although all the books are told in third-person, the first is from Nick's POV, the second from Mae's and the third is from Sin's.
* RunningGag - The number of times Nick shows up without his shirt is remarked on by several characters in the third book
-->Mae: Is this no-shirts festival day?
-->Alan: Every day with Nick is no-shirts festival day.
* SealedEvilInACan: Sorcerers and demon dancers alike always take extreme care when summoning demons to never let them escape the summoning circle (or in the sorcerers' case, make sure the demon is constrained to a human body), because a demon freed upon the world would mean TheEndOfTheWorldAsWeKnowIt.
* ShipTease - YMMV, but take any two (or [[ThreeWaySex three]] or [[MultiWaySex four]]...) characters and chances are there's plenty of shipping fuel.
* ShipperOnDeck: Hilariously enough, Nick is this for Mae and Alan.
* ShoutOutToShakespeare: [[foldercontrol]]

[[folder: Romeo and Juliet wouldn't have lasted ]]

* SociopathicHero: Nick, who has a hard time understanding concepts like empathy and pity.
* SpellMyNameWithAnS: “Cyn” is actually a fairly common pet form of “Cynthia.” Sin spells her name the way she does because a few years ago someone misspelled it, playing into the stereotype of the sexy and alluring black woman, and Sin chose to take it and make it her own.
* TallDarkAndSnarky - Nick.
* ThereAreNoTherapists: Justified in that [[TheMasquerade the vast majority of human society is unaware of magic]], so Mae is left struggling with the trauma of murder on her own.
* ThickerThanWater: One of the central themes of the trilogy. Nick would destroy the world for Alan, Alan would [[spoiler:set a demon free on the world]] for Nick, Mae would commit murder to protect Jamie, Jamie would lose his hold on his sanity for Mae, and Sin would give up everything she’s ever known and loved for her sister and brother.
* ThouShaltNotKill - Averted with just about everyone, magicians being the most probable target. In particular, Nick's default anger mode is Kill Something.
* ThrowingOffTheDisability: Averted, and how. [[spoiler:Nick actually heals Alan’s leg at one point for the duration of a single fight, before Alan makes him give his injury back because it’s a part of him. Nick also tries to do this for Jamie later after Jamie loses his hand, but Jamie’s not having any of it either.]]
* TomatoInTheMirror: The end of book one reveals [[spoiler:Nick is actually a demon, summoned into a fetal host while it was still in its mother's womb]].
* TookALevelInBadass - [[spoiler: Jamie, by the end of ''Covenant.'' Worth noting that Nick was his Professor of Badass.]]
* TookALevelInJerkass: Jamie in ''The Demon's Covenant''. [[spoiler:It's actually all a part of Mae's master plan to trick everyone into believing magicians can control demons who mark them, so that Gerald lets himself be marked by Nick.]]
* TransformationOfThePossessed: When Anzu possesses [[spoiler:Alan]], he begins altering the body to better suit his tastes, as Liannan likewise does with [[spoiler:Merris]].
* TranslationConvention: One of the lines drawn in a summoning circle is designed to translate demons' silent speech into something humans can understand, and vice-versa.
* TrojanPrisoner: In ''The Demon's Surrender'', [[spoiler:Nick pretends to be bound to Jamie's will so that Gerald will accept Nick's mark, continuing the act with Gerald until they're prepared to corner him and defeat his army]].
* TroubledButCute - Nick notes that girls are just about always attracted to him.
* TwistEnding - More specifically, [[spoiler:TomatoInTheMirror]].
* UnexpectedSuccessor: Pulled by Merris at the end of ''The Demon's Covenant'', who suddenly announces her intent to nominate [[spoiler:Mae]] to the position.
* UnreliableNarrator - At the beginning of the book, the reader is given a bit of background information regarding Nick and Alan's lives. By the end, most of it turns out to be wrong.
* UrbanFantasy
* WhatTheHellHero: Nick inspires this reaction in most people and in the reader too, particularly in the first book when everyone but Alan is in the dark about his [[spoiler:true demonic nature]].
* WhoWantsToLiveForever: [[spoiler:Nick.]]
* [[YouGottaHaveBlueHair You Gotta Have Pink Hair]]: Mae, though it is dyed.
* ZeroApprovalGambit: Alan has a plan to get the Obsidian Circle off his family's backs forever. [[spoiler:Freeing the demon Black Arthur is chasing and unleashing him into the world unfettered.]]
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