Wild Spirit — Meg Hendry

Dane has never truly been welcome in Elgin's pack of wild Derivare. As his son's coming of age draws closer, Elgin's distrust of Dane becomes clearer. After a hunt gone wrong, everything Dane cares about is thrust into danger. And it's possible only the depths hold the answer of why. Wild Spirit is a short story based between Knights of the End and Forsaken King.