Some Like It Wild by Teresa Medeiros

It was to be her greatest masquerade . . .

Pamela Darby needs a man--preferably a Highland brute with more brawn than brains. Determined to save her sister from selling her virtue, the resourceful beauty requires a strapping specimen to pose as a duke's long-lost heir. Pamela plans to collect the generous reward, then send him on his way. Lucky for the brazen beauty, the seductive, silver-eyed highwayman who just held up their carriage could be her man . . .

Connor Kincaid has given up on his dream of restoring his clan's honor. And now this plucky Englishwoman is asking him to take part in a risky charade that could land them both on the gallows. Never a man to resist a challenge or the allure of a beautiful woman, Connor strikes the devil's bargain that could seal both their fates. The highwayman and the hellion journey to London as both enemies and allies--a woman who has everything to gain and a man who has nothing to lose . . . but his heart.

This book is part of the "Kincaid Highland" series.
Here are some other books from this series: