It's Halloween in River Heights! The girls can't wait to go trick-or-treating and are busy getting their costumes ready. They also can't wait for the Halloween special of their favorite TV show. They even get the chance to visit the TV studio while the show is being taped! But soon after they arrive, Nancy is spooked. With all the scary noises the Clue Crew keeps hearing and the creepy shadows that seem to be lurking, it seems like the studio is haunted! Is it just Halloween jitters...or are here really such things as ghosts?