The dead walk for a reason

You are one of the last cunning-folk, the people who lay the restless dead. Every haunting has a cause. Work it out, then choose how it ends: set it right, or carry the soul yourself and live with what that does to you.
It’s a Nordic frontier where the näck and the mara are still about, sliding from plague into witch-hunt. That’s a bad time to be anyone who talks to the dead.