This is the fourth book in Shan's Demonata series, which follows several main characters who all live in different places and times. This title is set in pre-Christian Ireland, far removed from the previous books. Bec is the adolescent apprentice to a priestess in a small village cut off from the rest of the country by nightly demon attacks. After a particularly bloody attack, Bec joins a band of warriors who journey out of the city to find allies and possibly a way to stop the attacks. On the way, the company learns how the Demonata are entering this world. This series is enthralling, grotesque and surprisingly sophisticated for a young-adult series and will more than satisfy seasoned horror fans and history buffs alike.