Sin In The Underworld: A Forbidden Mafia Romance of Passion, Power, and Dangerous Love (Underworld Desires #2)
Nolan Crest

Sin in the Underworld is a steamy, slow-burn mafia romance that will leave your heart pounding and your morals in question.
He was supposed to marry her sister...
But he only wanted her.
When Valentina Romano—ice queen, mafia princess, and black sheep of her family—meets Kevin De Rossi, the heir to a powerful rival empire, their connection is instant... dangerous... and completely forbidden.
Except there’s one
💍 He’s engaged to her younger sister.
⚔️ Their families are enemies.
💣 And Valentina’s past mistake already branded her the family disgrace.
But what starts as a stolen glance soon turns into a war of touch, temptation, and treason. When betrayal strikes from within, and blood is spilled over loyalty, Valentina and Kevin must choose between duty and desire.
💥 Why you’ll love this
❤️ Forbidden, slow-burn, enemies-to-lovers romance
🖤 Intense mafia family drama
💋 Off-the-charts sexual tension & emotional depth
🕊️ A heroine who finds her voice
👑 A morally grey hero willing to burn the world for her
🔥 Twists, betrayal, and a love that defies tradition
If you love books like The Sweetest Oblivion or Twisted Loyalties, this dark and addictive romance will own you.
Read Sin in the Underworld now and fall in love with the danger.
Your heart might not survive it... but it’ll never forget it.