Publisher's blurb: A 15th Level adventure set in the city of Waterdeep. As the adventurers are investigating the disappearance of a missing teenager in the city of Waterdeep, they stumble upon an old rundown mansion rumored to be haunted. The search for a missing person will turn into a fight for survival when the heroes discover the haunting secret of the House of Horror, and become prey for what lurks in the basement.