Twenty inhabitants are living at Shiver-stone Castle. In each round a spook card showing 12 inhabitants is placed face up. The players try to remember these inhabitants. Once the card is turned over again, one by one the players frighten an inhabitant they think they have seen on the spook cards. At the end of the round, for each inhabitant they recognized the players move their ghost one square ahead on the ghost path. However, for each wrong inhabitant the have to move their ghost backwards. The aim of the game is to move the furthest ahead on the spook path. Source: "Game Idea" from the book rulese.