The Pumpkin Head Mystery — Gertrude Chandler Warner

This fall-flavored adventure for the Boxcar Children takes the Aldens to a New England farm that has more than its share of strange occurrences. Every year at the Beckett farm, visitors come to buy pumpkins and go on hayrides, but this year something is haunting the old place - a mysterious specter with a glowing pumpkin head that warns guests to stay away! It's up to the Aldens to find out who - or what - is behind the scare.