The Serpent’s Sin by. Kathryn Ann Kingsley | Book Review

My Rating: ⭐️⭐️⭐️⭐️

Spice Rating: 🌶️🌶️🌶️

Title: The Serpent’s Sin (Bloodlines, #2)

Author: Kathryn Ann Kingsley

Format: ebook (kindle unlimited)

Pages: 318

Publication Date: 1/23/26

Categories: Dark Romance, Vampires, Fae

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?

Content Warning: violence, death, torture, abuse

+ I like how Nadi and Raziel are always circling around each other, pushing, pulling, not sure what to make of what they are together. Because Nadi has had many changes to kill Raziel, and vice versa but here they are, not dead, but still with one another, not wanting to admit that maybe their relationship has changed into something different. They can’t put the words to it yet and I’m glad because as much as I want them to fall for one another, I didn’t want it to happen quickly because he killed her family. She has to work through some of those complicated feelings of hate turning into love.

+ We learn more about Raziel in book two! He’s just a morally black sadistic killer in book one, but in this book we know more about what he endured when he was growing up, how his family treated and how the things he loves gets taken away from him. I warmed up to him and realize he is a broken vampire with lots of issues and I can see why he hates his family. I like seeing him vulnerable but I also don’t want to see him lose his killer edge – and can’t wait to see what happens in book three.

+ I like that the spice is creative! 👏🏽👏🏽👏🏽 And it meets my expectations of how I assume Raziel would be in bed, so I’m glad he lives up to it. I love how as their relationship changes it shows in the spice also, sometimes dominating, sometimes soft, sometimes desperate. And speaking of their relationship, what a journey it goes through in this story! There are so many trust issues but that ending…I think that ending says it all about what they mean to one another and I love it. I am rooting for them.

~ This is a short book at barely over 300 pages which I love but I also wish it was 350 pages. Here I am complaining about books being too long these days and now I want this one to be longer! 😅. Again, it is light on the world-building but we did get a little more here because we are introduced to another vampire family, and we learn more about Raziel’s family. There are games afoot, and everyone is trying to entice Nadi to be on their side and she has to try and play it right. Though there is family political intrigue between the siblings, it’s never anything heavy – this is a light fantasy read, mostly all vibes, so it’s not like the cat and mouse game between any of them is super intense with surprising plot twists. At times I don’t even feel like Raziel and Nadi is staying ahead of anyone – they keep getting trapped, maybe because of their feelings for one another being their weakness? I’m not sure. Even the violence I feel could be more intense but it isn’t. But I don’t mind because this is one of those addictive reads that you can consume really quick.

Final Thoughts:

This one lived up to my expectations because I like seeing how Nadi and Raziel’s complicated relationship unfolds. I love them together and their spice is just right as much as their questions about what they feel for one another. They are becoming Bonnie and Clyde and I love it. I’m glad we learn about Raziel and his family. And that cliffhanger ending makes me eager for book three right away – I’m glad I don’t have to wait long because it comes out in July! This is an addictive series, light on the world building and easy to consume, I’m really enjoying it so far.

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