Elena Vale buried her brother, watched her mother disappear into grief, and buried her father not long after. She swore that whoever took Ethan from her would pay — and every road her revenge walks down leads to the same place: the Blackwoods. One of the most powerful families in the country. One of the most dangerous.Adrian Blackwood doesn't do mistakes. He doesn't do soft. He built himself into an heir his father couldn't fault and a name people don't say too loudly in rooms he isn't in. He also hasn't stopped looking for the one girl who ever made him feel like a person instead of a weapon — not since he was nine years old.Neither of them knows the other is the thing they've spent their whole life looking for.When Elena's company collapses into Adrian's path, revenge and rescue tangle into the same deal — and the closer she gets to the man she's sworn to ruin, the harder it gets to remember why she wanted to.Some debts get paid in blood. Some get paid in a heart you swore you'd never risk again.Sworn to Ruin Him — a slow-burn mafia romance about revenge, ruin, and the one person you never see coming.