Necromancer's Whisper by Alaina Stanford

Jack falls prey to a sultry Necromancer in the human realm.

Magic is not only forbidden in the human realm, it doesn't exist. It doesn't exist for anyone except the Necromancer.

When time passes with no word after Jack journeys across the sea to the human realm, the others decide to take action. They must be careful and hide their Elven heritage. Anyone suspected of magic in the human realm is burned at the stake. Meanwhile, the renegade Trolls are on the move back home and armed for battle. Will the others find Jack and return home in time to stop the renegades? Will Jack survive the Necromancer's evil magic long enough to be rescued?