Master of the Highlands by Veronica Wolff

Travel back to seventeenth century Scotland with the first romance in the Highlands series, as a modern woman finds true love across the ocean–and across time.

Lily Hamlin has finally realized that her life isn’t as perfect as she once thought. Making a pilgrimage to Scotland, a land she’s only heard about in lullabies, Lily hopes that she can find her place again. But while exploring the Highlands, she discovers an overgrown maze and a strange stone map–and lands in the Lochaber of 1654.

Ewen, Chief of the Clan Cameron, is a busy man who must figure out how to save his people from the brutal redcoats and has time for little else. Having sired an heir, the widowed Ewen has no need–or room–for another romance. Then into his life drops a saucy lass with a peculiar accent and no regard for his title. Drawn to each other despite their differences, they both realize that they don’t want Lily to go back to her own time. But with battles brewing between the Camerons, the redcoats, and a rival clan, staying could mean putting both their lives in danger…