Georgette Heyer 
The Black Moth : A Romance of the 18th Century [EPUB ebook] 
A Romance of the 18th Century

When the notorious Lord Tracy Belmanoir, Duke of Andover and also the infamous Black Moth, is caught attempting to abduct the dark-haired Diana Beauleigh by estranged Jack Carstares, the rightful Earl of Wyncham, he’s sent scurrying after a thrilling sword fight. Injured in battle, Jack relies on Diana to nurse his wounds and, as their feelings for each other blossom, realizes that he must return to Wyncham, clear his name of previous accusations, and rightly take over as earl. But the Black Moth waits patiently to take what he wants-and he is relentless. Can Jack take over as earl, defeat the Black Moth, and finally be with the woman he loves?