Necroscope: The Möbius Murders - Brian Lumley

Harry Keough, aka the Necroscope, has always considered himself a master of the Mobius Continuum--a dimension existing parallel to all space and time and his personal instantaneous gateway to anywhere in the multiverse. But this is hardly overweening conceit on Harry's part, for to his knowledge he is not unique; two other intelligences, with powers similar to his, do indeed exist. One such is the long-dead August Ferdinand Mobius himself, the German astronomer, mathematician, and discoverer of the eponymous Mobius Strip which led him to explore, posthumously, his previously conjectural Continuum; and the other is Harry s son, who has not only inherited his father's mathematical skill but also the metaphysical talent by means of which the Necroscope converses with dead people in their grav