Warrior of the Highlands — Veronica Wolff

She has to change the past in order to save his future...

While doing research for her dissertation, graduate student Haley Fitzpatrick stumbles upon a strange artifact that sends her back in time to seventeenth-century Scotland and into the path of the notorious Alasdair MacColla, a warrior with an enormous physical presence and a bloodthirsty reputation.

Assuming that the strange woman with the mysterious accent is an enemy spy, MacColla promptly kidnaps her. But Haley's beauty and courage strike a chord in the Highlander, making him desire things he never knew existed.

At first Haley is frightened by her imposing captor. But she soon discovers that MacColla is much more than the brute that modern history describes, and decides she's meant to be by his side. But unless she can find a way to change the past, the warrior she has fallen for is destined to meet a tragic end...