Darksome Thirst by Morven Westfield

When Alicia Anderson first became aware of the sentient shadows in the computer room, she dismissed them as figments of her overactive imagination. When she found herself tiring a little too easily, even dozing at the job, she could have attributed her lethargy to the lateness of the hour - were it not for the tiny twin bruises on her throat. Newly initiated wiccan priestess Matricaria has begun to receive psychic messages - vivid dreams and tarot card readings - that point to a terrible fate for someone near her. She and her coven attempt to decipher the symbols, hoping to prevent a tragedy. Soon the lives of these very different women are drawn together, toward a common goal: purge the shadows. paperback 330 pgs.