Gemini in Darkness

'The job on Beacon Street was intriguing, and Diana Lewis fit perfectly the one unusual requirement: she was born after midnight on a night in May -- under the same sign as the noted astrologer Madame Helene, whose supernatural powers she would be asked to publicize. Heedless of her fiance's warnings, Diana accepted the job and plunged into her work. But the mysteries of the old house soon demanded explanations: who was Madame Helene? Could she really be a century old, as Dr. Gill claimed? Did she really hold some strange power over the future?' William Edward Daniel Ross, W. E. Daniel "Dan" Ross (born 1912) is a bestselling Canadian novelist from Saint John, New Brunswick who wrote over 300 books in a variety of genres and under a variety of mostly female pseudonyms such as Laura Frances Brooks, Lydia Colby, Rose Dana, Jan Daniels, Ross Olin, Diane Randall, Clarissa Ross, Leslie Ames, Ruth Dorset, Ann Gilmer, Jane Rossiter, Dan Ross, Dana Ross, Marilyn Ross, Dan Roberts, and W.E.D. Ross. As Marilyn Ross he wrote popular Gothic fiction including a series of novels about the vampire Barnabas Collins based on the American TV series Dark Shadows (1966-71).