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 spooky theme. The problem is, someone-or something-is making things downright scary for other customers!

One stormy afternoon, the Aldens take a shortcut through the Greenfield Cemetery and discover a strange local superstition! According to legend, it's good luck to leave presents in a certain spot in the cemetery-and bad luck to anyone who doesn't. But, since there's no such thing as ghosts, there must be a reason for this weird tradition. The Boxcar Children are determined to find out what it is.

The Aldens visit Goldwin University, where Grandfather attended college. The old library is about to be torn down. But legend says the stone gargoyles guarding the roof of the old building will do anything to protect it-even fly. When the creatures begin appearing outside the windows, people are terrified. But the Boxcar Children think there is another reason the gargoyles are turning up in places they shouldn't. And they're determined to figure it...