Purity Makin is only a girl when James Rodale, a handsome Cavalier, seeks shelter at Ladymoon Manor, the house on the moors which holds strange echoes of its sinister past. But the girl has the passions of a woman, and from the events of a night springs a tale of promises betrayed and twisted jealousies; a tale in which a sacred chalice is used for good or evil to satisfy the desires of those who discover the secret of the Moon Goddess.