Mason by Susan Bliler

Mason EnemyHunter is a Skin Walker who’s only had time for work and hunting for his sister. Hell, he didn’t even know he had a sister until a siege on the facility where his parents were once captives produced a file verifying her birth. Distracted beyond measure, his treatment of a human female visiting StoneCrow Estates is unforgivable. Never had he physically harmed a female, until now. His inexcusable manhandling of Amanda Chandler leaves him needing to make amends. When his efforts at making things right pulls him from his sole-minded purpose of finding his sister, Mason realizes that he’s put his happiness on hold. That’s about to change.

Amanda Chandler doesn’t know why Mason attacked her. A friend and ally to Skin Walkers, she’d always felt safe in their presence until now. Worse, Mason’s guilt over the situation has him turning up every time she turns around. His insistence at making amends has him doing more for her than any man has done in a long time. It’s got strange emotions filling her head and a longing tugging at her heart. But Mason isn’t for Amanda. He’s too consumed with finding his sister, and Amanda’s too preoccupied trying to end things with Skin Walker Sentry, Remy McCabe. Mason couldn’t have arrived at a worse time, but Amanda can’t seem to shake him or the idea of what if.

*This is book 4 in the Skin Walkers series; however, each book focuses on a different couple and can be read as a standalone.