A mystery lurks in the ancient forests of northern England. Fairies and imps have been seen. People have aged alarmingly or gone mad, and children have been stolen and the life sucked from them. The professor and his eccentric assistants investigate druids, stone circles, ancient runes and spells, and evidence of beings who inhabited Europe before the last Ice Age. The professor must contend with superstition and fear, secrets and lies, and the very real dangers of fairy enchantment in this paranormal mystery.