The Otherworld Series is an UrbanFantasy[=/=]ParanormalRomance series by Yasmine Galenorn. Not to be confused with the [[TheOtherworld fantasy novel series]], [[Series/{{Otherworld}} science fiction series]] or [[Fanfic/TheOtherworldSeries fanfic]] of the same name. For tropes associated with otherworlds, see OtherworldTropes.

The D'Artigo sisters are three half-human, half-Fae members of the Otherworld Intelligence Service. Camille is a witch, Delilah is a werecat, and Menolly is a vampire. Unfortunately, their half-human heritage tends to make their magic [[MagicMisfire malfunction]] at inopportune moments, and they've acquired a reputation for incompetence that gets them assigned to Earth, where the existence of Fae and the Otherworld has [[TheUnmasquedWorld recently become public knowledge]].

However, what is supposed to be a boring assignment where their bumbling won't do any harm turns serious when they learn that a powerful demon lord, Shadow Wing, is seeking nine CosmicKeystones that will allow him to break the barriers between the worlds and conquer the Earth. With the Otherworld authorities in disarray due to insurrections against the opium-addled queen, the D'Artigo sisters and their assorted allies are the only ones standing in the way of Shadow Wing's conquest.

Books in the series so far include:
* ''Witchling''
* ''Changeling''
* ''Darkling''
* ''Dragon Wytch''
* ''Night Huntress''
* ''Demon Mistress''
* ''Bone Magic''
* ''Harvest Hunting''
* ''Blood Wyne''
* ''Courting Darkness''
* ''Shaded Vision''
* ''Shadow Rising''

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'''This series includes examples of''':

* BiTheWay: Menolly has had relationships with men and women. Additionally, though Delilah's only relationship has been with a man, she says that she's curious about having a relationship with a woman.
* BigBad: Shadow Wing
* BlondeBrunetteRedhead: The D'Artigo sisters. Camille has black hair, Delilah has blonde hair, and Menolly has red hair.
* CosmicKeystone: The Spirit Seals.
* CuteLittleFangs: Delilah. Unlike Menolly, she can't retract them, which sometimes causes her problems.
* DeaderThanDead: Kyoka. His first death didn't stick, so the Autumn Lord gave Delilah the power to completely destroy his soul.
* DeadlyDecadentCourt: Y'Elestrial.
* DidYouJustHaveSex: Camille to Delilah in ''Witchling''.
* DismantledMacGuffin: The Spirit Seals were originally one artifact, which was split into nine parts and distributed among the Elemental Lords.
* EpicFail: In ''Witchling'', Camille tries to cast a spell to lock a door, and ends up blowing it off its hinges.
* FlamingSword: Bad Ass Luke wields one.
* FriendlyNeighborhoodVampire: Menolly, and the members of Vampires Anonymous.
* FullFrontalAssault: Bad Ass Luke
* GodSaveUsFromTheQueen: Lethesanar, the opium-addicted queen of Y'Elestrial.
* GottaCatchEmAll: The Spirit Seals.
* GrandTheftMe: Stated to be a potential ability of powerful shamans, such as Kyoka.
* HalfBreedDiscrimination: The D'Artigo sisters suffered this in the Otherworld.
* HalfHumanHybrid: The D'Artigo sisters are half-human, half-Fae.
* HornyDevils: Rozurial the Incubus.
* HowTheMightyHaveFallen: Queen Titania
* IKnowYourTrueName: Camille mentions at one point that you should never tell a dragon your true name.
* IneptMage: Camille. Being half-human renders her magic unstable and liable to backfire.
* InvoluntaryShapeshifting: Delilah, as a werecat. She transforms under the full moon and when she's stressed.
* KissOfTheVampire: According to Menolly, vampires can choose to make their bite either pleasurable or painful, according to their desire.
* LaserGuidedAmnesia: One of Menolly's vampire powers. She can blur the memories of people she feeds on.
* TheLegionsOfHell: Shadow Wing's army.
* LesbianVampire: Menolly, Sassy Branson
* MagicMirror: Whispering Mirrors, which are used for secure communication by the OIA.
* MagicMisfire: A constant risk when Camille uses moon-magic. Fortunately, her death magic isn't as unreliable.
* MarryThemAll: Camille marries all three of her lovers.
* MyBelovedSmother: Belinda Stevens
* NotQuiteFlight: Menolly's vampire powers allow her to float, though not actually fly.
* OlderThanTheyLook: Fae age more slowly than humans, and vampires don't age at all.
* OnlyKnownByTheirNickname: Smokey the Dragon.
* OurDemonsAreDifferent: They come from the Subterranean Realm and are vulnerable to silver
* OurWerebeastsAreDifferent: Delilah is a werecat; other characters include werepumas and werespiders.
* PortalNetwork: A series of magical portals connects Earth, the Otherworld, and the Subterranean Realms.
* {{Psychopomp}}: The Death Maidens of the Autumn Lord.
* ScarsAreForever: Because Menolly was scarred before being turned into a vampire, they will never heal.
* ShootTheMessenger: Lethesanar rips out the hearts of the messengers who report Shamus's escape to her.
* SpeaksFluentAnimal: Delilah can communicate with animals while in cat form.
* TeamPet: Maggie the Gargoyle.
* TechnicolorEyes: As a Fae, Camille has purple and silver eyes.
* TooSpicyForYogSothoth: Menolly throws up after trying to drink Bad Ass Luke's blood.
* TheUnmasquedWorld: Takes place after the existence of Fae and the Otherworld has been revealed to humans.
* TheUnpronouncable: Lucianopoloneelisunekonekari, better known as Bad Ass Luke.
* VanHelsingHateCrimes: The Guardian Watchdogs is a group that commits such crimes.
* VaporWear: Menolly hasn't worn undergarments since becoming a vampire.