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  • King of Obsession : A Dark Mafia Enemies-to-Lovers Romance (Kings of the Underworld Book 1)

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Bianca Borell
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King of Obsession : A Dark Mafia Enemies-to-Lovers Romance (Kings of the Underworld Book 1) Kindle Edition

by Bianca Borell (Author) Format: Kindle Edition
4.1 out of 5 stars (48)
She was sent to kill him. He was built to possess her.

In the shadows of the Underworld, Luciana is the Council’s deadliest assassin–silent, lethal, unshakeable.

Until Enzo Ferrara. The ruthless billionaire mafia heir who should be a corpse… but instead becomes her obsession.

He mocks her. Tempts her. Hunts her.
And when she hesitates on the kill shot, a dangerous game begins–one fueled by captivity, betrayal, forbidden desire, and a chemistry sharp enough to cut.

Enzo should destroy her for coming after him.
Instead, he wants to crown her his queen.

But in a world built on blood and vengeance, love is a liability–and betrayal demands retribution.
Their passion is incendiary. Their sins unforgivable.
And only one of them walks away unscathed.

A dangerous, intoxicating enemies-to-lovers dark mafia romance standalone featuring an obsessed anti-hero, a lethal heroine, forced proximity, revenge, betrayal, and a love that destroys everything in its path.
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  1. Book 1 of 4
    Kings of the Underworld
  2. Print length
    386 pages
  3. Language
    English
  4. Accessibility
    Learn more
  5. Publication date
    25 Jun. 2025
  6. File size
    1.8 MB
  7. Page Flip
    Enabled
  8. Word Wise
    Enabled
  9. Enhanced typesetting
    Enabled
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 See full series
There are 4 books in this series.
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1 unreleased or unavailable book is excluded.

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Product details

  • ASIN ‏ : ‎ B0F99GF33T
  • Accessibility ‏ : ‎ Learn more
  • Publication date ‏ : ‎ 25 Jun. 2025
  • Language ‏ : ‎ English
  • File size ‏ : ‎ 1.8 MB
  • Screen Reader ‏ : ‎ Supported
  • Enhanced typesetting ‏ : ‎ Enabled
  • X-Ray ‏ : ‎ Not Enabled
  • Word Wise ‏ : ‎ Enabled
  • Print length ‏ : ‎ 386 pages
  • ISBN-13 ‏ : ‎ 978-3911317092
  • Page Flip ‏ : ‎ Enabled
  • Book 1 of 4 ‏ : ‎ Kings of the Underworld
  • Best Sellers Rank: 103,299 in Kindle Store (See Top 100 in Kindle Store)
  • Customer reviews:
    4.1 out of 5 stars (48)

About the author

Follow authors to get new release updates, plus improved recommendations.
Bianca Borell

Bianca Borell

Brief content visible, double tap to read full content.
Full content visible, double tap to read brief content.

Bianca Borell is a contemporary romance author, voracious reader, nature lover, and unapologetic daydreamer. She spends her nights deciding between getting up to write or trying to silence the voices of her characters. The battle is never-ending.

She has a weakness for tormented characters, second chances, and happy endings.

She currently lives in Germany with her amazing husband and indulges in way too many pastries than she should.

For updates, news, and releases, be sure to visit Bianca’s official website at www.biancaborell.com

Follow Bianca here: https://linktr.ee/BiancaBorell

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Customer reviews

4.1 out of 5 stars
48 global ratings

Top reviews from United Kingdom

  • Lil-monster
    5.0 out of 5 stars What a fantastic start to a new series!!!
    Reviewed in the United Kingdom on 1 July 2025
    Format: Kindle Edition
    I've read a few books from Bianca and have to say I ate this up!!! This is the first in a new series called Kings of the Underworld. This was an amazing, intense, sexy dark romance.

    Luciana is a trained assassin known as Silver Death.....Luciana being orphaned at one year old she is then raised by nuns, only then to be claimed by a ruthless mafia leader and shaped into a weapon this is where she's ordered to kill a rival mafia boss, she expects to get out of there quick get job done etc but what she doesn't expect is Enzo.

    Enzo has had a painful past and lost a lot, he no longer believes in love...that's until he comes face to face with the infamous Silver Death. He knows who she is and why she's come......but when he welcomes his death with open arms this sorta puts Luciana off kilter.

    When she hesitates and she can't seem to bring herself to kill him, she's drawn to him in a way she's never been drawn to anyone before and this sets in motion a fantastic but brutal love story between the two. Enzo falls hard and he falls first can he melt the ice queen's heart? Can Luciana trust him enough or will she betray him?

    Urgh I absolutely loved this so much and what a fantastic start to what looks like an even better series. I can't wait for book two.
    Helpful
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  • Tattooxx
    5.0 out of 5 stars Fantastic!!!!
    Reviewed in the United Kingdom on 26 June 2025
    Format: Kindle Edition
    Another fantastic book by Bianca!!!!!

    What happens with the Silver Death needs to do a job…..

    Enzo, knows what’s coming and is ready 😜😜😜

    These two are perfect, but be warned, you WILL need tissues ready for the epilogue
    Helpful
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  • Phoenix96
    5.0 out of 5 stars Great read
    Reviewed in the United Kingdom on 24 June 2025
    Format: Kindle Edition
    Luciana is a trained assassin and in order to learn more about her past she must take our her next target Enzo, only he falls fast and hard for the assassin, but she has her eyes on the prize of knowing and nothing can deter her, or can it? Well written engaging steamy, desires, obsession, drama and more!.
    Helpful
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  • Wendy Livingstone
    5.0 out of 5 stars Dark mafia romance!!
    Reviewed in the United Kingdom on 25 June 2025
    Format: Kindle Edition
    This is the first in a new series, and this is Luciana and Enzo’s story.
    Luciana is an assassin who is tasked to take down a rival mafia leader, in exchanges for information about her past, but nothing is straight forward. Enzo is arrogant and is impressed that the underworlds most rivered assassin is sent to kill him, and he laughs at her weapon of choice. A game of cat and mouse begins between them.
    This is a well written intense, action-packed story, with family, friendships, emotions, drama, angst, tension, suspense, intrigue, enemies / lovers, betrayal, humor, witty banter, forced proximity, revenge, morally grey, secrets, and love, which leads to an entertaining, and unpredictable, dark mafia romance.
    I look forward to reading more from this talented author whose work I highly recommend.
    Helpful
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Top reviews from other countries

  • Karen McVino
    5.0 out of 5 stars Dark, decadent, thrilling, and twisty … my obsession!
    Reviewed in the United States on 16 March 2026
    Format: Kindle EditionVerified Purchase
    Holy heart racer! I love my love stories laced with danger and Bianca Borell’s King of Obsession delivers all the way. This book had me in the biggest chokehold from beginning to end. King of Obsession is a savage beast that burns with fire and feels, and I reveled in this romance. UTTERLY INTENSE and INTOXICATING.

    King of Obsession is a love story meets mafia romance where the hero and heroine must unalive each other. This dark romance rules where a mafia king and queen battle demons and darkness, a hero and heroine destined to be one. Enzo hero and Luciana were created for each other. I could feel their chemistry, deep connection, and love explode through the pages. I was so addicted to this couple!

    Enzo is hero goals!
    🔥 Mafia don who is downright lethal
    🔥 Smokin’ hot, all alpha anti-hero
    🔥 Protective persona
    🔥 My undoing!

    Luciana is admirable as she navigates a traumatic past.
    👑 Assassin
    👑 Stunning
    👑 Strong
    👑 Gives as good as she gets

    King of Obsession is a heart-racing roller coaster of a romance felt everywhere. It’s dark, decadent, thrilling, and twisty. A heady mix of pain and pleasure woven with love that made my pulse pound and my heart race the whole time reading. The secrets … twists … cat and mouse games … electric banter … undeniable connection … and the insane intensity … I was undone! King of Obsession was my obsession indeed.

    💋💋💋💋💋 silver death kisses
    Report
  • Kindle Customer
    5.0 out of 5 stars King of Obsession
    Reviewed in the United States on 18 October 2025
    Format: Kindle EditionVerified Purchase
    Loved it!!!!!
    Please tell there are others coming.
    I am reading all your books now, so glad I found you.
    Report
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