Seduced by Virginia Henley

Shorn of her glorious raven tresses and dressed as a man, Lady Antonia Lamb became Lord Anthony Lamb, desperate to keep the property entailed to her twin brother, who is missing at sea. Trapped—and liberated—by her masquerade, Tony meets her new guardian, the devastatingly dangerous Adam Savage, who has returned from his plantation in Ceylon, determined to turn the innocent “boy” into a worldly man.
A rake whose scarred face and ice-blue eyes make strong women weak, Adam Savage, legendary adventurer, vowed to take young Tony to the fleshpots of London; to teach him everything a young heir should know. But not even Savage guesses Tony’s deepest secret, a masquerade destined to erupt in passionate abandon on one scorching, unforgetable night.