Feehan, Christine. Shadow series.

"As the head of the New York City Shadow Riders and his branch of the Ferraro family, Geno bears the weight of dual responsibilities on his broad shoulders. There's nothing more important to Geno than protecting his territory and his famiglia. So when his own parents become the latest victims in a string of vicious murders, Geno is ready to go scorched earth. He thinks he has the assassin in his sights, but he's unprepared for the firestorm their connection ignites... Amaranthe Aubert's lithe dancer's body conceals a spine of steel. Even held captive and faced with the threat of lethal interrogation, she's not about to cave under pressure. She had nothing to do with the murders, no matter what the ruthless man in front of her believes. But before Amara knows what's happening, Geno connects to her in the shadows, stripping her bare of all artifice. Now, she has no way to hide her true reason for being in New York--and nowhere to run from the man whose very presence steals the very breath from her lungs..."--