The Scarletti Curse by Christine Feehan

The Beast
Strange, twisted carvings and hideous gargoyles adorned the palazzo of the great Scarletti family. But a still more fearful secret lurked within its storm-tossed turrets. For every bride who entered its forbidding walls was doomed to leave in a casket.

The Bride
Mystical and unfettered, Nicoletta had no terror of ancient curses and no fear of marriage…until she looked into the dark, mesmerizing eyes of Don Scarletti. She had sworn no man would command her, had thought her gift of healing set her apart, but his was the right to choose a bride from among his people. And he had chosen her.

The Bargain
Compelled by duty, drawn by desire, she gave her body into his keeping, and prayed the powerful, tormented don would be her heart’s destiny, and not her soul’s demise.