Wight

A Wight is an undead creature that collects magical weapons. The place where a Wight lives is called a barrow.

Thor's Hammer

According to Otis, there is currently a wight living in Provincetown. Otis thinks that this wight might have the hammer, though this is not proven to be true yet. Otis also claims that he does not like wights because they remind him of his father. What the connection between his father and wights is, is unknown.