The Skeleton Key Mystery (156) (The Boxcar Children Mysteries)

The Aldens are visiting a small town known for its fall festival, and while Grandfather is off taking in the fall colors, the children try out the town's newest attraction--a Halloween escape room! The Aldens love solving the puzzles to get out of the room, and they don't mind the old house's spooky theme. The problem is, someone--or something--is making things downright scary for other customers! Are the stories about the graveyard behind the old house true? "The Aldens try out a Halloween escape room. The puzzle are fun to solve. But when eerie events start scaring people away, the children find a much bigger case to crack."-- (Source of summary not specified) The Aldens try out a Halloween escape room. The puzzles are fun to solve. But when eerie events start scaring people away, the children find a much bigger case to crack