I just finished up with To Tame A Wolf, by Susan Krinard. Having enjoyed the previous book in this series, Once A Wolf, I was happy to get started with this one.
Sim Kavanagh was the bad/tortured half brother to the “bad guy” in Once a Wolf. From the previous story Sim starts out as the complete bad guy but meets up with the young Esperanza, who is able to see into the hearts of others. No matter how badly he treats Esperanza she is convinced that he is not evil. In the end of Once a Wolf, Sim does the right thing and then moves off into his own story here.