Dark Crusade (Unbound #4)

Exiled rogue shapeshifter Kerr Vik once saw being transported to Gunngar as a fresh start. Until the one person he most regretted leaving behind - captivating witch Heather Moore - stumbles through the portal...and finds herself right in the middle of a witch hunt. Heather has courageously come to Gunngar to redeem herself. But Kerr knows that if she braves it alone...she will die. He must somehow send her back through the portal. And it's not long before a collision of truth, love and duty complicates Kerr's mission by forcing him to choose sides: should he save this forbidden love or protect his honor?