Silk and Shadows: Book 1 of the Silk Trilogy:

He called himself Peregrine, the wanderer, and he came to London for revenge... Like the falcon he named himself for, Peregrine is wild and free, an exotic prince who fascinates 1839 London with his wealth, mystery, and dangerous allure. He emerged from his mysterious Asiatic past to exact retribution for an appalling crime. Nothing and no one can stop him--except perhaps Lady Sara St. James, whose fragile beauty conceals a gentle heart, genuine goodness, and a soul of steel. Unable to res...