His Twins, Her Promise

When kind-hearted Ava Bennett accepts a job as a nanny for the country's most feared mafia don, she expects long hours, strict rules, and a man with a heart as cold as ice. What she doesn't expect are two lonely little boys who have spent years longing for love after losing their mother.
Feared by everyone and trusted by no one, Luca Moretti has built an empire on power, loyalty, and fear. His only weakness is his twin sons, yet no nanny has ever been able to earn their trust-until Ava walks into their lives.
With her warmth, patience, and unwavering devotion, Ava gives the boys the childhood they've been missing. As laughter slowly returns to the mansion, the walls around Luca's heart begin to crack. But in the mafia world, love is a dangerous luxury, and enemies are always watching.
When Luca's past comes back to threaten the only family he's ever truly loved, Ava must decide whether keeping her promise to protect the twins is worth risking her own life.
Sometimes the strongest promises are made with love... and sometimes love is powerful enough to tame even the most ruthless man.