In Aunt Tilley's house, Kyla and E.B. investigate random objects in the file drawers they inherited from Great Aunt Hermione that show how history connects to who we are and how we live now. A Celtic calendar leads E. B. to learn about a fall harvest festival the Celts celebrated. A wise goddess, the Crone, was honoured during Samhein. Bonfires and music helped keep spirits away. In some European countries in fall people go door to door asking for food, a predecessor of our trick or treating. At a Vietnamese cultural centre, Kyla learns about a traditional moon man mask. At the end of harvest in Vietnam, children wear masks and dance, carrying lanterns and enjoying sweet moon cake treats. Other Asian countries also honor their ancestors in fall festivals. In a cemetery, E. B. learns about the Latin American "Day of the Dead", from an old Aztec celebration. They paint their faces and bring food to celebrate the life of their ancestors. There are a lot of cultures that have fall harvest-time celebrations using costumes, masks, food, and honouring ancestors, resembling Halloween. Behind the mask we're not so different.