Halloween superstitions revealed. Steeped in tradition, Halloween season also is a time of year when superstitions take root and add to the spooky and often silly nature of the holiday. Some Halloween traditions are traced back to the ancient Celts. Their belief that spirits of the deceased were able to wander the earth during the time they called Samhain. Folks would wear costumes so the living could blend in with ghosts, and treats were laid out to appease the spirits. #Halloween