Trusting the Magic — Cait Miller

Book 3 in the Shifting Magic series.

Shapeshifter Nick Douglass flew to Scotland to help a friend but very quickly found that he was the one in need of rescue. Imprisoned and tortured by a man who'll stop at nothing to gain the secrets of his people, Nick knows his only hope for salvation lies in the hands of one of his captors. All her life, Abby has done as she's told, even when she hates it...until Nick. The shockingly erotic dreams they share draw them together, but Nick can't risk revealing the secrets he's fought so hard to protect. Failing to mate with Abby might cost him his humanity, but mating with her might come at the expense of shifters everywhere.