The Sea Priestess is the acclaimed novel in which Dion Fortune introduces her most powerful fictional character, Vivien Le Fay Morgan, an initiated practitioner of the Hermetic Path. Vivien has the ability to transform herself into magical images, and here she becomes Morgan Le Fay, priestess of the sea of Atlantis and adopted daughter of Merlin! Desperately in love with Vivien, Wilfred Maxwell works alongside her in an isolated seaside retreat, investigating these occult mysteries. They soon find themselves inextricably drawn to an ancient cult through which they learn the esoteric significance of the magnetic ebb and flow of the lunar tides.