Owned By The Mafia Boss by Nikky Mathew

She was sent to kill him. Instead, her own father sold her to him.
As a professional assassin,Elisa Bianchi had one job: put a bullet in Antonio Romano's chest before he ever knew her name. She failed.
And when her cover was blown, her father didn't fight for her, he traded her for his own life, handing his daughter over to the very monster she'd been sent to destroy.
Now she belongs to the most feared Don in all of Sicily. Chained in his dungeon, marked as his property, Elisa swears she'll never break.
But Antonio doesn't want her broken. He wants her loyal, and he's willing to burn down every wall she builds to get it. He owns her name. But her heart was never his to take.
Until it was.