The Loneliness of the Múrmaiden

From the description: The loneliness of the Múrmaiden is an adventure compatible with MÖRK BORG, loosely based on a Polish legend about a mermaid of the city of Warsaw. It is a story of love, loneliness, fear, and hopelesness. The adventure itself has been structured as a four act play, but don't get your hopes up for I am no playwright. The protagonists of this story are just an example and players are free to choose whatever scvm they identify with best.