''The Treachery of Beautiful Things'' is a YA {{Fantasy}} novel by Ruth Frances Long. Seven years ago, Jenny and her brother Tom were walking home through the woods when the woods swallowed him up. No one believed her. When she went back to try to resolve her feelings, she discovers she can go within herself, into the lands where the Fair Folk dwell, after him.
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!!Tropes included
* AFriendInNeed: Puck gets her out of the cottage as the forest swallows it.
* AfterActionPatchup: The harpist uses this on her
* AllOfTheOtherReindeer: How they talk -- and laugh -- behind her back.
* BeautyIsBad: As the title warns you
* BerserkButton: Jenny, when she realizes that Jack lied to her.
* BlatantLies: Jack's first tactic used on Jenny
* BloodMagic: Used to tame the redcaps
* ChangelingTale: The servants at court are all changelings.
* ColdIron: Extremely dangerous, even in toy form.
* CommonalityConnection: Wayland reflects on how Jenny sounds like his wife
* CoolSword: The Jester's Blade, the Sword of the Fool
* CrossoverCosmology: With Norse
* DistressedDude: Tom
* ElementalRivalry: Earth and air vs water.
* EveryoneCallsHimBarkeep: To the Fair Folk, Tom is "the piper".
* ExactEavesdropping: She learns the Woodsman and the Goodwife's plans this way
* TheFairFolk: Virtually all are nasty
* FauxDeath: Once the nix stole her soul
* FoodChains: Anything ''prepared'' by the Fair Folk.
* GodSaveUsFromTheQueen: The Fairy Queen is typical of the Fair Folk
* GreenThumb: the piper, with his music, can move roses
* HeroicSacrifice: Jack is warned that going into the water will mean he will never come out the same
* HumanSacrifice: the tithe
* INeverSaidItWasPoison: Jenny never told Jack how long ago her brother had vanished.
* InvoluntaryShapeshifting: Jack, every night
* IronicEcho: It's only trees
* ItWasAGift: Jenny's locket necklace
* LandOfFaerie: the setting.
* LaserGuidedAmnesia: The nix does it to Jenny.
* LaughingMad: When Jenny's told no one will believe her.
* TheLostWoods: It can swallow you up, and is full of the folk
* LotusEaterMachine: Tom doesn't want to leave
* MadeASlave: All the tree spirits
* MagicKiss: Both the nix and Jack use that
* MagicMusic: both the piper and the harpist.
* MakeAWish: The Leczi gives her one.
* MeaningfulName: Jack. Tom. Jenny Wren. All of which feature in English folklore
* MeaningfulRename: Jack calls her Jenny Wren.
* NoNameGiven: The Woodsman, and The Goodwife.
* NotSoDifferent: The piper tells Jenny that Jack has nothing in common with them -- Jenny rejects the implicit assumption the two are them are alike.
* OurFairiesAreDifferent: Even the Foletti, glowing, with wings, are still the Fair Folk
* OurMermaidsAreDifferent: Jenny, caught by the nix, thinks there are parallels.
* OurSoulsAreDifferent: You turn into Sleeping Beauty without one.
* PatronSaint: St. Martha's.
* PowerOfTrust
* PrettyButterflies: Jenny's first thought of the Foletti is that they are beautiful as butterflies
* ThePromise: Jack is oath-bound to help those on quests
* TheQuest: Jenny tells Jack that she's looking for her brother, thus invoking the promise
* TheReveal: Jack as the [[spoiler:green man.]]
* RuleOfSeven: Seven years
* ShutUpHannibal: Jenny rejects the piper's attack on Jack.
* TheyHaveTheScent: the dogs chasing the tracker who failed.
* TrueSight: Jenny has it.
* UltimateBlacksmith: Wayland, out of Norse myth
* UncannyFamilyResemblance: Jenny is Tom's minature.
* WeatherManipulation: The storm the night she is in the Woodsman's cottage is attributed to the piper
* TheWildHunt: Jack characterizes Titania's hunt as this
* WouldHitAGirl: The piper
* YouImaginedIt: Jenny, told it about Fairyland.
* YouthfulFreckles: Jenny, unlike the Sidhe
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