Ravenscrag castle is a dungeon designed to allow the DM to scare the players as much as possible. This should be done in the manner of telling ghost stories by a fire. It should include a number of stories told by the imhabitents of the castle which are sad, gruesome, and frightening. The castle always had a evil aura about it (leave clues about the difficulties building the castle. Perhaps it was built on a sight of worship used in bygone days devoted to one of the Old Dead Gods who were evil.) Sound effects should be a part of this adventure, and using a sampler should be encouraged.