The heroine, Allice de Kymber. inherited, along with the traditional beliefs of her Druid ancestry, a love of astronomy. Her experiments in that science lead her to be suspected of witchcraft, and finally to flee England. The story gives the details of her night and of the romantic episode between a scientific man and a visionary woman. A most weird and fascinating story based upon the astral sciences of old Britain, the ancient ceremonial worship which was termed "Druidism."