Blood Bride. Immortal Empire, #1

Carmine Montefiore, Mafia Capo and King among Vampires, has everything on the line. Luna Beneforte has nothing to lose, and she's the only woman who can save him. When Luna gets a letter revealing a long lost family in Italy and a life-changing inheritance, she doesn't hesitate to board a private plane to escape her dead-end life, and inadvertently runs directly into the arms of a dead man. Carmine Montefiore, capo of a secret vampire mafia, was sired five hundred years ago, during the second sack of Rome.
But for the last fifty years, his people believed him dead.as any normal vampire would be after getting staked. But Carmine is far from normal. Now he's back to search for a bride. He needs the blood of a Strega witch to restore his power, but they've become increasingly rare in the years he's been gone. Then he scents Luna...