Clash of the Demons (Last Apprentice Series #6)

"You can't make alliances with witches and suchlike and hope to avoid being drawn toward the dark."

As the Spook's apprentice, Thomas Ward's first duty is to protect the County from ghosts, boggarts, and other dangerous creatures. But now his mother has come back from her homeland to seek his help. One of the most dangerous of the old witches, Ordeen, is about to return to earth, bringing with her suffering and devastation. Tom's mother has mustered a powerful army—including Tom's friend Ali...