Druid-born Isla has been made to turn her powers to evil to protect those she loved. After hundreds of years under the evil drough Deirdre, she is found near death and brought back to the heart of the MacDougall warriors' enclave where she meets a kindness and welcome she had forgotten existed in the world. Isla longs to be part of the life the others have built at the castle, longs to forget the deaths of her sister and niece, and her part in them.

Hayden Campbell hates the drough, how could he not when a drough slaughtered his entire family? There is something compelling about Isla when he finds her half dead in the snow. How can he resolve his feelings for her and yet keep his vow to his murdered family to kill any drough who comes within killing distance?

Isla does her best to protect the haven the MacDougall has created, but insists that they be poised to cut off her head should she show any signs of being taken over by Deirdre. The battle is far from over, although her knowledge of the enemy brings hope. Can Hayden set aside vengeance for love? Can Isla afford to open her heart when she feels there is no hope for her?

Donna Grant's Dark Sword series is steeped in an alternate, magic-infused history of ancient Scotland. She skillfully brings the storyline that arcs throughout all the books into another unexpected twist, while providing more hope for the eventual defeat of the Druids' ancient enemy. UNTAMED HIGHLANDER is book four in the series, and just as compelling as the previous three. Book five, Shadow Highlander is due out in August, 2011.