Tatanka Spirit by Mary Rundle

Sent to capture the ones responsible for the Fox River Pack massacre, Reeve Nicolet has long given up hope of ever finding his mate, but the Fates have other ideas. The only problem is that his mate is the son of the shifter wanted by the High Council for the deadly act. Forced to keep it a secret, Reeve can only hope his mate will forgive him when the truth finally comes out.
Kahn’s teenage years were spent fighting his father, Josiah, who pressured his son to become be the next Alpha of the Silver Point Pack. Out of options when he father demands he marry a woman, Kahn leaves the pack and makes a new life for himself in San Francisco where he is finally able to do what he loves most.
When Reeve shows up to arrest Josiah, Kahn’s world is turned upside down. Forced into hiding, he struggles with guilt over his father’s sins while trying to give his mother and sisters the emotional support they need.
Alarmed by the threat of violence against his mate by one of Josiah’s enforcers, Reeve seeks help from Jackson while Kahn plans his escape. Desperation drives both in opposite directions until an unexpected event finally brings the two together in a claiming blessed by the Great Spirit.