I enjoyed this book as a child. It introduced readers to the 'other' meaning of Halloween. In the late 70s & 80s, it was all about costumes and candy. Christian religions weren't turning it into Fall Festivals and kids were safe to go house to house.
Names had a deeper meaning, portals to other worlds were unique in literature, and learning about other religions were part of being open minded and tolerant. This was a book ahead of its time.
I was able to appreciate the story line just as much as an adult. The lore, adventure, and time slip, myth/lengend were woven together and held tight. I still enjoy the characters' growth, knowledge, emotions, and relationships.
The characters weren't orphaned or destined to save the world, which is the constant boring theme of today's YA fantasy.
Grace Chetwin's On All Hallow's Eve is a timeless, wonderful tale for the season for all ages.