This story succeeds by placing a relatable, tabletop-gaming protagonist within a snowbound inn full of secret passages and local folklore. Milo gains confidence by using his role-play persona to solve layered mysteries involving the house's ghostly history. Books in this family share a cozy, atmospheric setting where ordinary heirlooms hide supernatural secrets and logic rewards observant readers.

In this Edgar Award-winning sequel, thirteen-year-old Milo Pine, adopted son of the owners of the peculiar Greenglass House, anticipates a peaceful Christmas break. His plans are upended when a series of enigmatic guests arrive, each with a hidden agenda. Milo, alongside his new friend Meddy, dives into a role-playing game that becomes a real-life investigation into the house's history of smuggling and a legendary treasure. The mystery deepens with a shocking revelation about Meddy's true identity and a dangerous confrontation with a customs agent. This intricate story explores themes of identity, friendship, bravery, and the meaning of family, all wrapped in a suspenseful, whimsical package. It is perfect for readers who enjoy complex mysteries with a touch of the supernatural.