In the kingdom of Axaria, a darkness rises. Some call it a monster, laying waste to the villagers and their homes. Some say it is an invulnerable demon summoned from the deepest abysses of the Immortal Realm. Many soldiers from the royal guard are sent out to hunt it down. Not one has ever returned. When Asterin Faelenhart, Princess of Axaria and heir to the throne, discovers that she may hold the key to defeating the mysterious demon...

Nothing is what it seems and there's always more than one side to the story as a group of strangers trapped in an inn slowly reveal their secrets in this new standalone mystery set in the world of the best-selling Greenglass House series.