Book excerpt: A clairvoyant, Leadbeater wrote, is simply a person who develops "the power to respond to another octave out of the stupendous gamut of possible vibrations" and so is enabled "to see more of the world..than those of more limited perception." And what a world Leadbeater describes for us in these pages---a world of Master adepts and their pupils, untapped human powers and potentials, ancient mysteries, devas and nature spirits--in short, the unseen workings of the universe.