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Cover of The Serpent's Sin

The Serpent's Sin

by Kathryn Ann Kingsley

🌶️🌶️🌶️🌶️steamy·Bloodlines #2·Ongoing Series
4.5 on Goodreads (151)

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Ending

reveal ending

Why Read This?The one-sentence sell. What do you get for showing up to this book, even when it's hard?

A human pretending to be a vampire inside a criminal vampire empire—Nadi walks the knife edge between desire and destruction while Raziel's family closes in

Synopsis

To destroy the vampires who killed her family… she must become one of them. Nadi is trapped in a deadly alliance with Raziel Nostrom. After a honeymoon soaked in blood and desire, they make a pact—to take down his criminal family together. Now Nadi is at the heart of the Nostrom empire, pretending to be a vampire. If her act slips even for a moment, they will tear her apart. Raziel holds Nadi’s life in his hands. And her heart… His wicked smile sets her body aflame, drawing her closer and closer. Still, he is a born killer—alluring and utterly ruthless. He could turn on her in an instant. But Raziel is not the only one in his family with a taste for betrayal… When his brother and sister approach her with proposals of their own, Nadi faces a desperate choice. Will she stand by Raziel, as the world turns against him? Or seize the perfect chance to destroy his family forever?

book details below may contain spoilers. some hidden

At a Glance

Kingsley's signature villain-stays-villain energy is fully unleashed here—Raziel is a vampire crime lord and the book never pretends otherwise. Nadi's infiltration of the Nostrom empire while maintaining a fake vampire identity creates delicious tension on every page. Rated 4/5 explicit open door by romance.io—the steamy scenes crackle with power dynamics and danger. Book 2 of Bloodlines series (after The Serpent's Bride), ends on a cliffhanger. Published 2026. Fans of Carissa Broadbent and Keri Lake will devour this.

trope onetrope twotrope threetrope four

Book Details

spoiler protected·tap tags to reveal

Goodreads RatingThe crowd's verdict. Take it with salt, though. Some masterpieces are polarizing.

4.52 ★ (151)

Page CountHow long the commitment is.

334 pages

PublishedWhen this hit shelves. Helpful for tracking vibes by era.

2026

Primary GenreWhat type of book this is. Romance? Fantasy? A 400-page therapy session disguised as a thriller?

Dark Fantasy

PairingWho's falling in love? The gender makeup of your main romance. Helps you find your specific flavor of love story.

M/F

POVWhose head are you in? First person = deep in the feels. Third = watching from above. Dual = emotional whiplash (affectionate).

Dual POV

Romance PacingHow long until they kiss? Slow burn = 300 pages of tension. Insta-love = page 12 and it's already chaos.

Medium Burn

CliffhangerEnding type: HEA = forever happy (you'll cry happy). HFN = happy for now (open to interpretation). Bittersweet = complicated feelings. Know what you're signing up for.

reveal ending

AudiobookCan you experience this book while driving? Washing dishes? Working out while emotionally destroyed? Check here.

AvailableCan you experience this book while driving? Washing dishes? Working out while emotionally destroyed? Check here.

Yes

FormatHow fancy is the audio? Standard = one narrator. Full cast = theater kids went off. GraphicAudio = a MoViE iN yOuR mInD.

Single Narrator (unspecified)

NarratorThe voice in your ears.

Desireé Ketchum

Narrator Count

Single

TropesPlot devices and story situations that drive the romance. These are the circumstances that throw characters together or create conflict, not how they personally relate.

spoiler protected·tap tags to reveal
enemies to loversmarriage of conveniencerevenge romanceforced proximitydark romancecaptive romanceimmortal/mortal romance
RomanceMagicActionAngstWorld
Theme Constellation

Mood & Vibe

MoodWhat you felt reading this. Swoony? Gutted? Deliciously unhinged? The emotional fingerprint.

darkdangeroussuspensefulseductiveintense

Writing StyleHow the author writes - prose style, dialogue approach, and narrative voice. This is about craft and delivery, not emotional effect.

darklushdramaticsuspensefulengaging

Story PacingDoes the story sprint or saunter? Fast = you'll miss sleep. Slow = you'll savor every word. Medium = balanced chaos.

fast

Emotional WeightHow much are you gonna cry? Light = fun feels. Moderate = real stakes. Heavy = bring tissues. Devastating = call your therapist.

heavy

Energy RequiredCan you read this on a Tuesday after work, or do you need a full Saturday and three cups of coffee? Low/Medium/High.

high

VibesOne perfect sentence that captures the essence. Like: 'Fae politics meets forbidden romance with zero chill.'

forbidden desireslow descent into darknessmorally complex

Characters

spoiler protected·tap tags to reveal

FMC ArchetypeWho is she? The female main character's core identity/role. Assassin? Healer? General Badass?

survivorspy/thiefmorally gray FMC

MMC ArchetypeWho is he? The male main character's core identity/role. Your exact flavor of book boyfriend.

villain MMCmorally gray MMCanti-hero

Relationship DynamicsThe interpersonal dynamic between the main characters. How do they relate to each other? This is about character energy and connection style, not plot situations.

enemies to loverspush and pullforbidden lovepossessive love interestpartners in crime

Spice Details 🌶️

spoiler protected·tap tags to reveal
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Spice Level 4

Spice StyleNot just how much spice, but what kind. Emotional intimacy? Explicit but vanilla? Plot-driven heat? Know your flavor.

intense / passionate

Getting SteamyGentle kinks. Fun but nothing too crazy. The appetizer, so to speak.

rough but consensualgrowling / possessive soundsjealous/possessive during intimacymarking hickeysmine declarationssize difference focuseye contact intensity

Bringing the HeatFor those who know exactly what they came for. This is where you find your exact brand of chaos. The good stuff.

rough/aggressive intimacybonding/claiming/markingpossessivepower exchangeprimal play (hunting/chasing)bondage/restraint
Browse more books by spice level →
This stuff might hit different. No shame in needing to know what's coming. (5)▼
spoiler protected·tap tags to reveal
human trafficking themesviolencetorturegraphic violenceblood
Browse books by content warning →

World & Setting

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World TypeWhat kind of world are you stepping into? High fantasy = full secondary world. Urban fantasy = magic in modern cities. Portal = starts here, goes there.

paranormal

Primary SettingWhere does the story physically take place? Court intrigue = palace. Dark academia = campus. Cozy witch vibes = small town. This is about location, not world rules.

vampire empire / dark urban setting

Fantasy CreaturesWhat supernatural beings populate this world? Fae courts, vampire covens, dragon riders, or just regular humans doing their best.

vampiresfae

Reading Context

spoiler protected·tap tags to reveal

Emotional PayoffWhat you get for showing up. The catharsis, the growth, the 'I'm a different person now' moment. This is why the hard books are worth it.

addictive readtension finally satisfiedadrenaline rush

Best Time of YearSeasonal mood rings for books. Summer romance reads different than winter gothic.

anytime

When & Where to ReadContext matters. Some books are Beach Trip energy, others are 3am Bedtime spiral-reads. Trust.

at nightrainy weekendbedtime

Bloodlines

Bloodlines

#1 Bloodlines

The Serpent's Bride

#1 The Serpent's Bride

The Serpent's Sin

#2 The Serpent's Sin

The Golden Lily

#2 The Golden Lily

The Indigo Spell

#3 The Indigo Spell

The Fiery Heart

#4 The Fiery Heart

Silver Shadows

#5 Silver Shadows

The Ruby Circle

#6 The Ruby Circle

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Quick Facts

Spice LevelThe heat scale. 0=wholesome, 1=kisses, 2=fade-to-black, 3=tasteful spice, 4=explicit, 5=you need a cold shower. Know thyself.🌶️🌶️🌶️🌶️steamy
PagesHow long the commitment is.334
PublishedWhen this hit shelves. Helpful for tracking vibes by era.2026
GoodreadsThe crowd's verdict. Take it with salt, though. Some masterpieces are polarizing.4.52 ★ (151)
EndingEnding type: HEA = forever happy (you'll cry happy). HFN = happy for now (open to interpretation). Bittersweet = complicated feelings. Know what you're signing up for.reveal ending

SeriesThe series this book belongs to and where it falls in the reading order.

Bloodlines #2
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