The novels in the ''Elemental Masters'' series, by Creator/MercedesLackey, are a mix of historical fiction and fantasy, with a big scoop of fairy tales stirred in. Most of them are set in the late 1800s-early 1900s.

The books “officially” in this series are:
* ''The Serpent’s Shadow''
* ''The Gates of Sleep''
* ''Phoenix and Ashes''
* ''The Wizard of London''
* ''Reserved for the Cat''
* ''Unnatural Issue''
* ''Home from the Sea''
* ''Elemental Magic'' - An anthology similar to the ones for the ''Literature/HeraldsOfValdemar'' series, except about Elemental Masters and Magicians.
* ''Steadfast''
* ''Elementary'' -Another anthology
* ''Red As Blood''

''The Fire Rose'' uses the same pattern and tropes as the official books, but was published by a different company so isn’t normally included in a list of the series. However, it will be included on this page.
-----
!! This series provides examples of:

* [[ABoyAndHisX A Girl And Her X]]: Nan and Sarah from ''The Wizard of London'' and ''Home from the Sea'' have familiars, Neville the raven and Grey the parrot, respectively.
* AcquiredPoisonImmunity: Reggie has developed a resistance to opiates, thanks to the large doses he's been taking in order to get any sleep. When Alison tries sedating him near the end of the novel, it wears off much sooner than she'd expected.
* ActionGirl: In their "Warriors of the Light" aspects, both Isabelle Harton and Nan can pull this off. Ninette Dupond manages this as well, and then immediately lies about it because NoGuyWantsAnAmazon.
** Several of the women in the series are this. Most of the rest fit under ActionSurvivor instead.
* AlchemicElementals: Sylphs, Gnomes, Undines, and Salamanders all show up. They will serve those who have a talent for their respective elements, and cooperate with mages with a complementary element, but dislike and avoid those with opposing elemental affinity.
* AllTrollsAreDifferent: The troll in ''Reserved for the Cat'' is an evil earth elemental with the ability to shapeshift into many different forms, including humans. Trolls also show up briefly in ''Unnatural Issue'', serving under {{necromancer}} Richard Whitestone.
* AmbiguouslyEvil: We don't know ''what'' is up with [[spoiler: Kali Durga]]. [[spoiler: She does eventually kill Shivani for the crimes the priestess commits in her name, but it's not clear whether She approves of the thugees and HumanSacrifice in the normal course of business; Shivani's death may be a case of EvenEvilHasStandards or GoodAllAlong.]]
* ArrangedMarriage: The pact between the Protheros and the Selch.
** Played with after Mari chooses her Selch husband. Since she ''has'' to have a marriage license if she's not going to be treated like a whore by the village, Dafydd Prothero pretends he's forcing Mari into an arranged marriage with a cousin (the Selch fiance) to ensure that she'll be able to keep their cottage after Dafydd eventually dies.
* BackAlleyDoctor: Dr. Maya Witherspoon fits the "highly trained and well-equipped criminal" version. She’s a fully-qualified doctor and surgeon, with a perfectly respectable clinic. She also volunteers at a clinic in one of the rougher neighborhoods of London, holds late office hours for the convenience of several courtesans/mistresses among her patients, and is willing to provide any female patient with contraception (illegal at the time).
* BalefulPolymorph:
** Jason Cameron (though he [[IdiotBall did it to himself]])
** Thomas the cat
** Wolfgang would probably count himself here as well, though he’s more of a changed-species {{Reincarnation}}.
* BeastAndBeauty: ''The Fire Rose'' is based on "Literature/BeautyAndTheBeast"
* BehindEveryGreatMan: At one point, Rose thinks back to a fellow student who stole her research while courting her. She had wondered at the time if it would really be so bad to have her work published under her husband's name. In the event, he was only courting her for her family's money; when a scammer drove her father to bankruptcy, the student dumped Rose.
* BitchAlert: Alison, Carolyn, and Lauralee throw enough bitchiness to fill a kennel in the very first chapter of the "Phoenix and Ashes."
* BlackMagic: Arachne and Reginald Chamberten. Reginald has gone all the way to DealWithTheDevil, not that it helps him at the end.
* BlackWidow: Alison – Eleanor's father and the father of the stepsisters were merely the bookends of a long career of using and killing men.
* BlessedAreTheCheesemakers: ''Unnatural Issue'' spends a fair bit of time talking about cheesemaking.
* BlindWithoutEm: Rosalind.
* BookcasePassage: Richard Whitestone's secret library and Work Room are concealed this way.
* CannibalismSuperPower: The Troll.
* CatsAreSnarkers: Thomas.
* CharmPerson: Ninette has a touch of this ability.
* CinderellaCircumstances: Eleanor in ''Phoenix and Ashes''.
* ColorCodedElements: Fire is red, Air is blue, Earth is yellow, and Water is green.
* CrazyPrepared: Ninette's maid Ailse. Originally hired as someone who wouldn't freak out at elementals running around, it turns out she carries a revolver loaded with Cold Iron, Silver, and Blessed Lead bullets. At all times.
* CrossoverCosmology: All religions have some truth to them; both the Christian afterlife and the Druidic Summer Country are shown to exist, for example, though the Christian version isn't as all-encompassing as it claims to be. Also, the divine magic of the Hindu pantheon plays a significant part in ''The Serpent's Shadow''.
* CulturedBadass: Lord Peter Almsley, a young gentleman and scholar, proves that he's this when he comes up against the (much larger) town bully in ''Unnatural Issue''. The bully gets pulped, Peter's only injury is sore knuckles from hitting the bully so many times.
* CutLexLuthorACheck: Jason Cameron from ''The Fire Rose'' is contemptuous of his apprentice's use of magic to cheat at gambling games (in the specific mentioned incident, a cockfight). A genuine Fire Master (which Paul theoretically could become if he actually put some work in) could make a fortune in a few years through completely legal means like he did.
* DeathByChildbirth: ''Unnatural Issue'' begins with Richard Whitestone returning home mere hours after his wife Rebecca succumbs to this. He does ''not'' take it well.
* DepletedPhlebotinumShells: Ailse's aforementioned special bullets.
* DevourTheDragon: In the climax to ''Phoenix and Ashes''. KarmicDeath? Oh yeah.
* DomesticAbuser: Katie Langford's husband, Dick, in ''Steadfast''.
* DraftDodging: Warrick Locke's servant/bodyguard Robbie (''Phoenix and Ashes'') uses his ability to dislocate his shoulders at will to avoid the draft.
* TheEdwardianEra: Time period for most of the novels.
* ElementalEmbodiment: Several. Those with a touch of magic can see them; masters of the corresponding element can command them.
* ElementalPowers: Most magic in this series is based on the four Western elements.
* ElementalTiers: This is alluded to in ''The Wizard of London'' when Lady Cordelia is working on her plan to GrandTheftMe David; she thinks that after stealing David's body and powers, "instead of the weak Power of Air [Cordelia's element] behind the Power of Ice, she would have the immense strength of Fire [David's element]."
* [[EvilUncle Evil Aunt]]: Maya's aunt Shivani.
* EvilIsDeathlyCold: The ice elementals in ''The Wizard of London''.
* EvilIsEasy: Paul [=duMond=] in ''The Fire Rose'' is convinced there's a shortcut to magical power, and turns to the novel's villain when Jason refuses to teach him that "shortcut".
* EvilTwin: Shivani was Surya's evil twin. She may have killed Surya, definitely killed her husband, and spends the whole book trying to track down and kill Maya as well.
* FairyTale: The plots of all the novels are based off different fairy tales:
** ''The Fire Rose''= "Literature/BeautyAndTheBeast"
** ''Serpent's Shadow'' = "Literature/SnowWhite"
** ''Gates of Sleep'' = "Literature/SleepingBeauty"
** ''Phoenix and Ashes'' = "Literature/{{Cinderella}}"
** ''Wizard of London'' = "Literature/TheSnowQueen"
** ''Reserved for the Cat'' = "Literature/PussInBoots"
** ''Unnatural Issue'' = "Literature/{{Donkeyskin}}"
** ''Home from the Sea'' = "Literature/TamLin" and "The Selkie of Skule Skerry"
** One of the stories from ''Elemental Magic'' is based on "Literature/{{Rapunzel}}"
*** Another example from ''Elemental Magic'': "The Glass Coffin".
** ''Steadfast'' = "Literature/TheSteadfastTinSoldier"
** ''Red as Blood'' = "Literature/LittleRedRidingHood"
** In ''Elementary'', one story is based on '"Literature/HanselAndGretel", another on "Literature/SnowWhiteAndRoseRed", and a third on "Literature/LittleRedRidingHood" - this last is noteworthy as it has now become a prequel to ''Red As Blood''.
* TheFairFolk: Robin Goodfellow is a very benevolent example, but he's still a mercurial being who operates on BlueAndOrangeMorality.
* FairWeatherMentor: Jason Cameron to Paul du Mond. He knows that this is because Paul simply isn't willing to put in the effort to actually master Fire, but he is meanwhile just taking advantage of Paul's services as a secretary while withholding lessons that Paul wouldn't be able to master anyway. Paul sees him as a full-blown case of this, of course, and turns to another master for lessons; one who is far less scrupulous than Jason.
* FateWorseThanDeath: Jonathon Hightower warns Ninette that she may be facing this, "and I do not mean mere rape".
* FauxFlame: Part of Jonathon's magic act. Sometimes he doesn't bother to tell his assistants the flames aren't real. Ninette was ''not'' amused.
* FinancialAbuse: [[spoiler:When Katie's husband Dick finally catches up to her, he lives off of the good salary she gets from her job at the music hall and keeps close track of the money she spends so that she can't hide any away.]]
** Alison forgot to make Eleanor's father change his will before she got him killed. She pockets the regular allowance Eleanor gets from the estate, and forces Eleanor to write regular letters to the law firm in charge of the estate asking for additional money for extra expenses.
* TheFundamentalist: Shivani and her agents.
* GentlemanWizard: Pretty much everyone.
* TheGirlWhoFitsThisSlipper: Eleanor’s pinky finger gets chopped off by her WickedStepmother in the first chapter as part of a binding spell, so when she leaves her gloves behind at the masquerade ball, there's no question about who they belong to. Doesn't stop her stepsister Lauralee from trying, though, and coming out to the hero to claim her gloves still loopy from the painkillers.
* TheGlassesGottaGo: Averted in ''The Fire Rose'' -- when one of Jason's Salamanders comments that Rosalind is nice-looking despite her glasses, Jason immediately declares that glasses are just another accessory.
** Inverted as well--without her glasses, Rosalind says that Jason merely looks like a man with a remarkable beard.
* GrandTheftMe: Lady Cordelia's plan for David Alderscroft.
* HalfBreedDiscrimination: Maya Witherspoon's mother ran away from her wealthy Brahmin family to wed an English doctor and army officer, so she gets it from both sides.
* {{Heaven}}:
** [[spoiler: Exists, but isn't described; the one time it's seen, it's just a glorious light through a gateway. Sarah finds two [[ChildrenAreInnocent ghost children]], who believed that they were destined for Hell for being bad kids, and opens the road to Heaven for them.]]
** The pagan Summerland also serves this function. It's primarily for the dead who followed the old Druidic religion, but in some situations where a Christian ghost can't make it to Heaven but doesn't deserve Hell, the Puck arranges for them to go to Summerland as well.
* HermeticMagic: Several Masters, most notably Fire-aligned Jason, Jonathon and Eleanor, use drawn circles and runes, either to actively work magic or as a means of mental focus.
* HistoricalDomainCharacter: Aleister Crowley is a disgraced Magician turned con man. The Elemental Masters positively loathe him, but consider him to be a useful idiot for keeping up TheMasquerade; as long as people associate Magick with him and his crowd of drug addicts, they'll be less likely to see it as real.
* HistoricalInJoke: Constantly. One of the funniest is an offhand remark about "that incident at Loch Ness" which may give the lake a certain notoriety.
* HoistByHisOwnPetard: Alison's earth giant turns on her when she runs out of power.
* HomeschooledKids: The backstories of several characters in the series include being taught at home by tutors who were themselves Elemental magicians. Considering the time period, this is normal, since many wealthy families hired tutors for their children if they weren't being sent to Eton or some other boarding school.
* HonorRelatedAbuse: Shivani kills her sister Surya and Surya's English husband, as well as trying to kill their daughter, in order to cleanse the shame of Surya's mixed marriage from the family line.
* HopelessSuitor: Susanne spends most of ''Unnatural Issue'' carrying an intense torch for Charles Kerridge, until she finally has to acknowledge that a) he's in love with someone else and b) he has absolutely no interest in her.
* HorrorHunger: The Troll in ''Reserved for the Cat''.
* HurtingHero: Reggie Fenyx starts ''Phoenix and Ashes'' with a combination of broken bones, shell shock, and psychic trauma from extended magical ColdBloodedTorture.
* IndustrializedEvil: Arachne's pottery of HumanSacrifice.
* InVinoVeritas: Alluded to in ''The Serpent's Shadow'', when Maya Witherspoon brings a young man injured on the orders of one of the book's villains to the Fleet Street Clinic. The head nurse is worried about the attraction he shows to a female medical student/clinic volunteer, until Maya points out that there's just as much truth in a quarter-grain of morphine as there is in wine.
* LifeDrain: Alison does it to her solicitor in order to increase her magical power, also to her two daughters. Possibly Shivani, since Peter Scott notes that she looks too young for her twin sister to have a twenty five year old daughter and there are only so many ways to preserve youth.
* LightFeminineAndDarkFeminine: The twins sisters in "The Serpent's Shadow". Surya was gentle, loving and maternal (light). Shivani is vicious, vindictive and cruel. Maya as well is light being a doctor and healer.
* MagicAIsMagicA: ElementalPowers, PsychicPowers, TheFairFolk, and Indian divine magic, among others.
* MagiciansAreWizards: Jonathon Hightower, an Elemental Master of Fire, is also a skilled stage magician. Most of his stagework is sleight of hand, but he enjoys using "real magic" at least once in each show. Also Lionel Hawkins in ''Steadfast'', who is an Air Magician and has sylphs that help him with his magic acts.
* MagicMusic: One method of summoning.
* MalignedMixedMarriage: Maya's parents. Maya and her mother were looked down as inferior by the British ex-Pats in India and barred from pretty much all of the social institutions. And for all that, the British were still more accepting of the marriage than Surya's family was...
* MasterOfIllusion: Jonathon.
* MaternalDeathBlameTheChild: In the prologue of ''Unnatural Issue'', Richard Whitestone returns home to find that his wife succumbed to DeathByChildbirth a few hours earlier. He blames the baby, Susanne, of the death.
* MeaningfulName: Marina in ''The Gates of Sleep'' and Mari in ''Home from the Sea'', both Water Masters. Also Maya's name means 'illusion' and she is very adept with spells to avert notice. Peter means stone and Peter Scott [[spoiler: marries Maya, an Earth Master.]] The other Peter [[spoiler: follows him in ''Unnatural Issue'', with his love interest being also an Earth Master.]]
** Eleanor's nickname Ellie is quite similar to Ella for Cinderella.
* MentorShip: In ''Home from the Sea''. [[spoiler:Mari ends up falling in love with the Selkie sent to be her magic teacher, instead of the Selkies sent to court her.]]
* {{Misogyny}}: Richard Whitestone is absolutely convinced that women are mentally inferior to men.
** Maya Witherspoon, being a doctor in an era when women were seldom encouraged to aspire to anything apart from marrying well and keeping a household, gets a lot of this as well.
** In fact, it's a recurring theme in the entire series; appropriate considering the era.
* TheMourningAfter: Richard Whitestone is this in the worst way.
* MuggleFosterParents: Inverted with Marina Roeswood – the three godparents who raise her (and the fourth who is brought in to help teach her) are all Elemental Masters.
* MundaneUtility: Mercedes Lackey is in love with this trope:
** Earth mages not only use their healing powers to become doctors, but use Earth Magic to handle household tasks such as making cheese.
** In ''The Fire Rose'', a Fire Master is able to divine fluctuations in the commodity market, while his apprentice bets on a cockfight, then drives his chosen bird berserk to ensure an easy win. Other magical means of acquiring wealth are mentioned; Water Masters make their fortune in shipping, Earth Masters can predict gold strikes, and Air Masters become entertainers.
* MysticalPlague: Alison calls up a disease elemental at one point, and basically tells it to go nuts infecting people. Mercedes Lackey doesn't come out and ''say'' [[BeenThereShapedHistory Alison just created the 1918 pandemic]], but it's certainly implied.
* {{Necromancer}}: Richard Whitestone turns to necromancy following his wife Rebecca's DeathByChildbirth.
* NiceJobBreakingItHero: After a close call involving her psychotic necromancer father, [[spoiler: Susanne Whitestone was bundled off to safety by the White Lodge. To be precise, she was evacuated to a country estate in the Ardennes department of France... in late [[UsefulNotes/WorldWarOne June]] [[OhCrap 1914]].]]
* NinjaMaid: No kung-fu, but Ailse [=McKensie=] takes on a magical assassin with an iron cookpot.
* NobleBigot: Lord David Alderscroft can never quite override his biases against those of lower social classes. He gets manipulated like a puppet by a commoner (and Dark Magician) who did the [[Theatre/MyFairLady Henry Higgins]] thing and took elocution lessons to speak like an upper-class lady.
* OccupiersOutOfOurCountry: One of Shivani's motivations is to throw the English out of India.
* OfCorsetHurts: In ''The Gates of Sleep'', after Madame Arachne carries off Marina, her maid forces Marina into tight lacing with the comment "You've never been properly corseted". (Marina eventually figures out how to tense her abdominal muscles to keep her corset from being laced too tightly.) Maya in ''The Serpent's Shadow'' and Rose in ''The Fire Rose'' also show dislike for wearing corsets, and never laces theirs as tightly as fashion would dicate.
* OneSteveLimit: Lampshaded aversion. Peter Scott and Peter Almsley share the name, Water Mastery, and temperament, and they're thick as thieves, jokingly referring to each other as "twins" because of the shared name and mastery.
* OnlyInItForTheMoney: Ninette's entire motivation, at least at first. Played sympathetically as a matter of survival, not greed.
* OopNorth: Most of ''Unnatural Issue'' is set in Yorkshire.
* OurAngelsAreDifferent: In ''The Fire Rose'', [[spoiler: the Unicorn]] is strongly implied to be this. At the very least, it's a spirit of something other than the four elements, it cannot be coerced by any kind of magic, and it's apparently speaking and acting on behalf of some kind of higher authority.
* {{Oxbridge}}: Several characters have attended or are attending either Oxford or Cambridge. Eleanor Robinson goes to Oxford to study literature at the end of ''Phoenix and Ashes''. In ''Home from the Sea'', a minor character mentions that he is being sponsored at Cambridge by Lord Alderscroft, and when Sarah asks, "What, not Oxford?", he replies that his father was a Cambridge man and the idea of his son attending Oxford made him turn puce.
* ParasolOfPain: Custom made umbrellas with sharpened tips, reinforced shafts comparable to crowbars, and hidden compartments in the handle are mentioned in more than one book as discreetly martial accessories for ladies.
* ParentalAbandonment: All over the place. But then, it's also common in the source material.
** Subverted with [[spoiler:Thomas, who is actually Ninette’s missing father.]]
* PayEvilUntoEvil: Robin Goodfellow states it: "Evil to him who evil does, I say!"
* PostModernMagic: Dr Witherspoon's arcane talents and senses are invaluble in determining what new[[note]]for Edwardian values thereof[[/note]] medical theories actually ''work'', while her knowledge of anatomy and the process of the disease enables her application of HealingHands to properly cure a case of Tuberculosis.
** Arachne's method of HumanSacrifice is to take innocent young girls and [[IndustrializedEvil employ them in an Edwardian pottery/brothel]], causing them to slowly waste away from lead poisoning while their minds and souls are degraded from the sex work.
** Lead from a church roof is used to make [[ReligionIsMagic holy bullets]].
* PublicDomainCharacter: Susanne Whitestone gets magic lessons from no less than [[AMidsummerNightsDream Robin Goodfellow]]. Robin also makes appearances in ''The Wizard of London'' and ''Home from the Sea''.
* RapeIsASpecialKindOfEvil: Paul du Mond from ''The Fire Rose'' is a bad man, and one of the ways that this is made abundantly clear is that he essentially works as a professional rapist[[note]]He's still paying for the use of the women, but he gets a discount[[/note]], turning poor Mexican and East Coast girls into properly-broken San Francisco prostitutes.
* ReasonableAuthorityFigure:
** When forced to be, Lord Alderscroft is this, being the stern patriarch of the Exeter Club and the one man who's most responsible for keeping rogue mages from running wild in England and maintaining good relations with the local elementals. However, while he can be trusted to do the right thing in the end, [[ObstructiveBureaucrat until then, he's often not much help]].
** ''Unnatural Issue'' explains that this is in a gamekeeper's job description. Theoretically, a gamekeeper is supposed to prevent ''all'' illegal poaching on his lord's land, but actually enforcing this just leads to a messy, covert war that benefits nobody. Both Robin Goodfellow and Peter Almsley, when they take on the job, instead confine themselves to ensuring that nobody overhunts the land they're responsible for. (Of course, in Robin's case, it helps that he couldn't care less about game laws, only about the good of the land.)
* ReligionIsMagic: The Hindu gods are very active in ''The Serpent's Shadow''. Furthermore, Christian holy relics (such as lead from a church roof) are effective against dark magic. The pagan gods of England are also quite active, but they're seen as another variety of [[TheFairFolk Fair Folk]] or Elemental spirit, rather than something truly different.
* ARoundOfDrinksForTheHouse:
** In ''Reserved for the Cat'', Jonathan pretends to be someone who just won a lot of money and is buying rounds to celebrate as a way to keep a reporter occupied while Thomas and Wolf search the reporter's apartment.
** In ''Phoenix and Ashes'', Reginald routinely offers to buy rounds at the local pub. He's loaded and knows that the guys he befriended there [[INeedAFreakingDrink could use a drink]] since many of them (like him) were sent home after being injured in UsefulNotes/{{WWI}}.
** In ''Unnatural Issue'', when Lord Peter Almsley is masquerading as a gameskeeper, it is mentioned that he endeared himself to the regulars at the local pub in the proper manner by buying the house a round.
* UsefulNotes/SanFrancisco: Primary setting of ''The Fire Rose''.
* SapientCetaceans: ''The Fire Rose'' mentions that whale and dolphin Water Masters are known to exist.
* {{Selkies and Wereseals}}: In ''Home from the Sea''. [[spoiler:The main character has to marry a Selkie to fulfill a bargain her family made centuries ago.]]
* ShapeShifterShowdown:
** Marina and Arachne throw down in the climax of ''The Gates of Sleep''.
** Alluded to in ''Reserved for the Cat''. [[spoiler:Thomas lost.]]
* SheCleansUpNicely: Eleanor Robinson, not surprising considering that ''Phoenix and Ashes'' is a "Literature/{{Cinderella}}" reworking.
* ShellShockedVeteran: Reggie Fenyx and his fellows in ''Phoenix and Ashes''.
* ShoutOut: Lord Peter Almsley is what LordPeterWimsey would be like if Dorothy Sayers had given him magical powers.
** In ''Home from the Sea'', when Nan and Sarah are telling their former teacher about their trip in Africa, they mention that they were helped in Egypt by a lady who is known as "Sitt Hakim" and from the rest of her description is clearly Literature/AmeliaPeabody.
* SilverBullet: Ninette's maid Ailse carries with her at all times a revolver loaded with Cold Iron, silver, and Blessed Lead bullets. Ninette later gets a revolver of her own with those bullets and learns how to shoot it.
* SmokyGentlemensClub: The Exeter Club passes itself off as one of these (going so far as to hire pension-off male servants to sit in the padded leather chairs and read the newspaper/nap) as a cover.
* TheSoulsaver: Part of Sarah's job as a medium is to help ghosts, who are shown to exist in a gray, dreary limbo, move on to {{Heaven}} or the Summer Country (depending on their religion).
* SpotMonkey: After Ninette's performance in ''[[http://en.wikipedia.org/wiki/La_Sylphide La Sylphide]]'' at the beginning of ''Reserved for the Cat'', one reviewer complements her for avoiding this trope and making the Sylph's death scene brief. The injured ballerina Ninette was filling in for was notorious for dragging the death out so long the orchestra had to start repeating measures.
* StrongFamilyResemblance: Susanne Whitestone looks almost exactly like her mother...which unfortunately attracts the ''[[ParentalIncest wrong]]'' kind of attention from her father.
* TheSvengali: Jason Cameron is a mild example of this to Paul du Mond. He's using Paul as an agent while theoretically teaching him Fire Magic, but he knows damn well that his teaching isn't doing Paul any good because the man won't apply himself. While he doesn't lie to Paul, he's happy to let him lie to himself, and he's planning to [[YouHaveOutlivedYourUsefulness discard]] Paul the first chance he gets.
* TallDarkAndSnarky: Jonathon Hightower in ''Reserved for the Cat''. He loses some of the arrogance but keeps the snark.
* TalkingAnimal: Wolfgang, Maya’s seven "pets" [[spoiler:when possessed by the Hindu gods they’re associated with]]. Thomas doesn’t qualify, as he can only speak [[{{Telepathy}} mind-to-mind]], and only to those with some degree of magical ability.
* TarotMotifs: Eleanor's magical instruction in ''Phoenix and Ashes''.
* TitleDrop: The last four words of ''Reserved for the Cat''. ''Home from the Sea'' does the same thing.
* ThouShaltNotKill: Katie's teachers impress this rule on her to keep her from solving the problem of her [[DomesticAbuser abusive husband]] by [[KillItWithFire just burning him down]], because it would destroy the innocence of her Elementals and possibly [[MurderMakesYouCrazy lead her down the dark path]].
* UnscrupulousHero: Jason Cameron's worldview in ''The Fire Rose'', inherited from his own Master. He's not exactly a good person, but he believes in being a good shepherd to the lower classes because well-fed poor work better and don't start riots. It's essentially PragmaticVillainy taken to the point where he doesn't need to be a villain.
* TheVamp: Alison Robinson, she got where she is by using and destroying men. Her daughters try but they are nowhere effective enough.
* VictorianLondon: The setting/period for ''The Wizard of London'', chronologically (though not in publication order) the earliest of the novels.
* WaifFu: Ninette. She's a ballerina, but, as she herself points out, ballet builds muscle.
* WarIsHell: This is a major theme in ''Phoenix and Ashes'' and ''Unnatural Issue''. WWI has severe negative effects on the characters who are soldiers, as well as those on the home front.
* WhileYouWereInDiapers: In ''Reserved for the Cat'', Thomas loses patience with Jonathon's snarking.
--> Do not mock me, Jemmie Hightower. And keep a civil tongue in your head. I knew your uncle, and I knew you when you were still in [[UsefulNotes/BritishEnglish nappies]].
* WickedStepmother: Alison Robinson to her stepdaughter Eleanor full stop, she even has two spoiled, cruel daughters.
* TheWildHunt: Puck calls for it to take the soul of an evil ghost. It's never properly described, but some characters refer to becoming its prisoner as [[FateWorseThanDeath worse than going to Hell]].
* UsefulNotes/WorldWarOne: Setting/period for ''Phoenix and Ashes'' [[spoiler: and ''Unnatural Issue'']].
-----