Book of Souls by Steven L Smithen

Dorian Callahan is the only son of the New England pack Alpha, joined the military immediately after graduating high school tired of the dominance games and politics he sought a different life style. Ten years later Dorian returns to his home intending to help his mother and twin sister run the family business, a peaceful transition to civilian life and some down time was what he wanted, no needed.
Instead he’s thrust into the middle of a centuries old feud between three factions of the supernatural world, at its center an ancient grimoire once belonging to a Mayan deity, has come to light and threatens the peaceful life Dorian was expecting.

Betrayal’s scent clogs the air obscuring the truth. Dorian will need answers to age old questions in order to protect those he loves, escaping one battlefield for another, will it be enough?