Bright Sword of Justice (Guardians of the North #3)
Alan Morris

In Bright Sword of Justice , the trail of a violent gang leads Hunter Stone and the Mounties to the Blackfood village where Reena O'Donnell works as a missionary. There they find a mysterious person who claims to know where the killers are. Hunter also discovers that a new missionary has arrived in the Territory who is obviously captivated by the beautiful Reena.
When the Mounties clash with the gang and capture three of the men, to Reena's horror one of the outlaws turns out to be her younger brother, Liam. Although he is truly a victim of circumstances, the evidence against him is strong, and no amount of pleading from Reena can change Hunter's commitment to carrying out justice. Will truth prevail for her brother? And to which man will Reena's affections lead?