Book excerpt: Dynamite Entertainment is proud to continue the story of Phoebe, Piper, and Paige, television's fan-favorite witches, in all-new adventures set within the official continuity of Charmed! A dark force has set its sights on the art world of San Francisco, utilizing a gallery exhibit to feed souls to the underworld and unleash demons into our reality. Only the Power of Three, harnessed by the Halliwell sisters, can stop the madness!