"The Halloween Tree" is a children's novel written by Ray Bradbury. It tells the story of a group of friends who embark on a magical adventure on Halloween night. They are led by their friend Tom Skelton, who is determined to save another friend, Carapace Clavicle Moundshroud, from danger. As they journey through time and space, the children learn about the history and significance of Halloween traditions from various cultures. The story explores themes of friendship, bravery, and the importance of understanding the past, making it a captivating read for young audiences.