Publisher's blurb: The Elf King's Revenge or The Butter Feud - A Vaesen Mystery brings the Society to Denmark in an attempt to end a feud among cursed farmers from spiralling out of control. Shadowy forces and an ancient Vaesen is behind the conflict, and if not careful the investigators may be lost forever. The adventure explores forgotten beliefs and traditions in Danish folklore and history to create a fun and challenging tale for the investigators. The mystery is based around a new type of Vaesen and on the mysteries of Butter Witchcraft. The adventure can be played in 2 sessions.