Gr 4–6—The Greenglass House is the kind of ancient, creaky home in which a gothic horror story might be set, and the plot in Milford's latest seems to be headed that way, at least at first. Milo has just finished his homework and is looking forward to the quiet time over Christmas break, when the inn for smugglers his adopted parents run is usually deserted. But in the midst of a howling blizzard, an odd assortment of visitors with secretive purposes seemingly related to the history of the building shows up at the inn. When the power goes out and items begin to go missing from the strange new guests' rooms, Milo decides to team up with the cook's daughter, Meddy, to figure out which, if any, of the guests arrived with nefarious purposes. Meddy's interest in Role Playing Games (RPGs) and her insistence that she and Milo adopt new names and personalities for their quest can make certain passages confusing, as Milo often refers to and thinks of himself as his game character, Negret. A twist near the end of the story helps fold the RPG plotline into the overarching narrative, while the icy, atmospheric setting and nuanced character development propel the story forward, in spite of lingering questions about the world the characters live in. Give this one to fans of Trenton Lee Stewart's "The Mysterious Benedict Society" (Little, Brown).—Elisabeth Gattullo Marrocolla, Darien Library, CT