"Something is weird about this party in 16th century Scotland! A famous thief stole a magical jewel and hid inside a castle where a party is taking place. Enter the party, find the jewel, escape with your life. In the first half of the adventure, the player characters will explore a weird party in search of the thief Jougal. They’ll likely piece together that this party is not “normal” and that this castle is not safe. In the second half, the baobhan sith will reveal themselves, red caps will set the castle on fire, and the PCs will find themselves locked in a burning hellhole. The adventure will likely change from a fun party-crawl into a stressful fight for survival. This is the NIGHTMARE PHASE." This adventure blends elements of horror, survival, and mystery, requiring players to use both their combat skills and their wits to navigate through the treacherous and evolving scenarios within Firnhirst Castle. Written for Cairn RPG