The Most Wanted Goosebumps characters are on the loose and coming after you! It's Halloween and that means time for trick-or-treating. And scary parties. But this year things are taking a turn for the terrifying. Scott and Amanda throw a bash at an old haunted house. There won't be any treats, only traps. Traps for a few bullies that are always bugging them at school. What could possibly go wrong? How about a haunted house with a mind of its own? A house that would rather play its own tricks and set its own traps.