When the gang meets up with famous fright-writer Ben Ravencroft, he invites them to New England for his hometown’s big Autumn Harvest Festival. Things take a supernatural detour when they learn the place is haunted — by Ben’s ancestor Sarah! Will the mystery reveal that Sarah was a good-hearted healer...or a spellcasting witch? Before you can say “Scooby snacks!”, the gang is on the case, tangling with bumbling mummies, monster turkeys — and (zoinks!) a ghostly secret hidden in the Ravencroft family’s past!