Death of a Darklord - Ravenloft The Covenant

In a land where magic is feared, a young mage must betray her own nature by joining the fight against dark sorcery
 
There is a plague in the village of Cortton, a plague of the dead. Corpses walk the streets in search of the living. The villagers send for the mage-finder Jonathan Ambrose, for they believe evil magic is at work. They are right.
 
Jonathan soon discovers who is behind the destruction of the town: Harkon Lukas, a wolfwere who plans to escape the bounds of his realm. All he needs to enact his scheme is the aid of Jonathan’s adopted daughter—a young woman with a talent for magic in a land and family unforgiving of such abilities.
 
Jonathan believes he is in Cortton to save the villagers—to lay the dead to rest. But if the vile shapechanger Harkon escapes his curse and can travel the Dark Domains as he pleases, the slaughter has only just begun.