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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 (46)
4.4 on Goodreads
124 ratings
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
    June 25 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 ‏ : ‎ June 25 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: #155,115 in Kindle Store (See Top 100 in Kindle Store)
  • Customer Reviews:
    4.1 out of 5 stars (46)

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
46 global ratings

Top reviews from Canada

  • Nean
    5.0 out of 5 stars Loved it
    Reviewed in Canada on August 19, 2025
    Format: Kindle Edition
    Luciana is the best of the best at what she does. Although when she’s asked to do a hit on someone, she never expected that she would hesitate. The information she’s promised, and the threats made means she has to complete the job.
    Luciana never let any man get close to her until Enzo, somehow, he breaks down all her walls.
    Luciana knows what they have could never work but Enzo makes her want to try, until she’s gets a threat, she knows that could destroy her.
    Enzo never wanted anyone before, their lives would be at risk, and he wouldn’t do that, but Luciana is different, he knows she would be more a threat to anyone then them to her. She makes him want more, he wants her to be his queen, and he will give her everything.
    Enzo thought they were building something, he thought Luciana was actually considering leaving her life and making one with him, then he finds out she’s not and all he wants is revenge.
    Helpful
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  • Salima Mapara
    5.0 out of 5 stars Absolutely love Enzo and Luciana!!!!
    Reviewed in Canada on June 30, 2025
    Format: Kindle Edition
    Absolutely loved this book. Mafia Romance is one of my favourite genres. Can’t get enough of it. This book reeled me in beginning to end. Luciana also known as Silver Death is an assassin. She was orphaned at 1 years old. A ruthless mafia leader adopts her at a young age and trains her to be an assassin. Her next job is to take out an another mafia leader Enzo. Enzo has gone through so much pain and loss. Luciana sees something in that calls to her. Their chemistry is undeniable. Betrayal, loyalty, passion and so much more in this book. I can’t wait for the next book in the series!!!
    Helpful
     Report

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 March 16, 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 October 18, 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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