Sinful Games by Marie Annilla

She hates him… but he’s claiming her anyway.

Being a Mankiev comes with its perks—money, power, and opulent jewelry. Yet beneath the glittering façade lies a darker truth. Caia Mankiev has grown up in the treacherous world of her father’s empire, a ruthless dealer who navigates the realms of the richest and most influential. When her father recognizes the allure of her beauty, he sees an opportunity: to use her as bait to seduce wealthy men, particularly Alexsei Romaniev, one of the most feared members of the Silas.
Her father’s demand is simple: seduce Romaniev and bring him to her bed, granting him leverage over the Silas and access to unimaginable wealth.
What follows is a dangerous game of loathing and lust, where every glance ignites perilous danger. As Caia and Alexsei dance closer to the flames, they risk everything—only to discover thatpassion can burn as fiercely as betrayal.

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Sinful Games is a contemporary arraged mariage/ he fell first and hard/ damaged heroine/ slow burn dark mafia romance.
This is the second book in Marie Annilla’s Sinful series.