Cry Havoc (Jack Frey #1)

They say when the demons come, you either fight or you die.
The Black Dogs know this all too well. For three hundred years, the warrior priests have sacrificed their lives to keep the island nation of Abios safe from the flesh-eating Nostros, while the rest of the world fell under the demons’ savagery. However, an armada now stands poised to invade mankind’s last bastion.
Child thief Jack Frey is saved from the gallows and joins the mysterious order. Trained with the bullet and the blade, Jack finds himself on the front-line of a centuries-old war.
Across the Angel Sea, Lin is fighting for her life. As a slave of the Nostros, she knows death can strike at any time, either at the hands of her masters or her fellow humans.
Little do they know mankind's fate lies in both their hands.
Fans of Peter V. Brett and Brent Weeks will love CRY HAVOC.
Dive in to a dark and refreshing fantasy epic you won't be able to put down.