Highland Fire by Elizabeth Thornton

Disguised as a boy, Caitlin rides out with the rebels to attack the English laird who dares to call himself chief of her beloved clan. But the bronzed, golden-haired hero of Waterloo is more of a man than the tempestuous Scottish innocent has bargained for.

Enflamed by Caitlin’s stormy beauty, wild spirit, and wicked tongue, Lord Randal swears to tame her—in and out of his bed. Now, as the dark secrets of the past fan the embers of an ancient blood feud to raging fury, Caitlin finds herself trapped in wedlock, her heart held captive by this bold and virile invader whose searing kisses set her soul aflame with an unexpected and unconquerable love. Together, they dare danger and destiny for an unforgettable passion.