Dark Paranormal (Vampire / Demon / Monster)
The Serpent’s Sin: A steamy dark fantasy romance (Bloodlines)
Book 2 in the Bloodlines series · Reading order →
SpiceDarkness
- Kindle, paperback & audiobook on Amazon
- Spice & darkness rated — content warnings listed below
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Why we recommend it
A steamy dark fantasy romance where a serpent's sin and forbidden blood-magic collide with real consequence. Sultry, morally shaded, and unafraid of its own darkness.
At a glance
The Serpent’s Sin is book 2 in Kathryn Ann Kingsley’s Bloodlines series; to read in order, start with The Serpent’s Bride. It rates 4/5 for spice and 4/5 for darkness, mid-range for dark paranormal romance: of the 852 dark paranormal romance books we rate, 50% score lower for darkness and 45% lower for spice. Tropes: forbidden romance, morally grey MC and possessive-obsessive MC. It is about as dark as Kathryn Ann Kingsley’s other books on Readark (average darkness 4.2/5). It runs to 316 pages. We have not tagged its content warnings yet, so check the author’s notes before you start.
Book details
- Pages
- 316
- Published
- January 2026
The Serpent’s Sin spice level
The Serpent’s Sin is rated 4/5 for spice on Readark’s scale: explicit and frequent, meaning multiple detailed scenes, with heat central to the story. Its darkness rating is 4/5: heavy, meaning sustained cruelty, trauma or non-consent central to the relationship. How we rate
The Serpent’s Sin content warnings
We haven’t tagged content warnings for this book yet. If you have specific triggers, check reader reviews before you start.
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Content warnings (tap to reveal)
- Graphic Violence
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