Centuria Books — Next-Gen Preview

Blood Oath of the Cartel: Darkness Binds them. Passion Defines them.

Centuria Books · Catalogue · Preview build

Blood Oath of the Cartel: Darkness Binds them. Passion Defines them. cover

Blood Oath of the Cartel: Darkness Binds them. Passion Defines them.

El Diablo of the cartel meets the monster in his rafters — and the only power she can’t kill him with is his own restraint.

Dark Romanceparanormal vampire romance / cartel (mafia) romance crossoveHeat: explicit

Seraphina Thorne, a vampire Enforcer who has spent a century hiding among mortals, is dispatched to dismantle the operation of Alejandro Vargas, a cartel kingpin who has claimed her shadowed ‘Sanctuary’ district.

When they discover his rivals have allied with rogue vampires and a corrupt vampire Council to spark a war, the two apex predators forge an uneasy, consent-bound partnership that becomes something neither expected.

As the conspiracy closes in and her own kind moves to punish her for bleeding for a human, Sera and Alejandro must fight through a cartel war and a vampire tribunal to protect what they’ve built.

Their arc turns on rebuilding trust and rewriting the brutal rules of both their worlds into something two damaged predators can share.

Tropes: vampire/mortal romance, enemies to lovers, apex-predator meets apex-predator, forbidden love across factions, morally gray hero, dangerous heroine who could kill him, forced proximity/alliance of convenience, found trust after betrayal, protective devotion, blood bond/mate bond, damsel-in-distress inverted (both rescue each other), one bed / consent as intimacy, against-coven-law romance (what these mean)

📖 Read the first chapter free

Story promises: Guaranteed HEA · third-limited POV · past tense (what this means)

Content notes: explicit sexual content; graphic violence; gore; torture; captivity and restraint; cartel violence and murder; human trafficking referenced (condemned in-text); child death (backstory, off-page); past betrayal and attempted immolation; blood/feeding (full index)

AuthorLady Heartswell
GenreDark Romance
Published2026-03-21
ASINB0GTGDQQTR
FormatsKindle
Heat levelexplicit

More from Lady Heartswell

The Angel's Dominion cover

The Angel’s Dominion

Romantasy · 2026A guardian angel falls for the human woman he was sent to protect, and their forbidden love becomes the only thing standing between a conqueror and an…
Crimson Vows of Tartarus: A LitRPG Romance cover

Crimson Vows of Tartarus: A LitRPG Romance

LitRPG Romance · 2026An isekai’d succubus with a maxed-out body and a beginner’s soul rewrites the rules of a summoning contract—turning ‘bound weapon’ into an equal who…
The Surgeon Who Stayed cover

The Surgeon Who Stayed

Thriller · 2026The surgeon everyone worships has let himself feel nothing for years — until the one nurse who can match his hands, and won’t fear him, walks into his…
Between Ice and Iron cover

Between Ice and Iron

Dark Romance · 2026A woman who holds the leash on two apex predators learns that being loved is not the same as being needed.
As an Amazon Associate, Centuria Books earns from qualifying purchases. Some links on this site are affiliate links.