Of Tangible GhostsBestselling author L. E. Modesitt, Jr. begins his Ghost Books series with Of Tangible Ghosts in a strange alternate reality where ghosts are no longer mere superstition, but physical realities. When two real ghosts and the records of a murdered researcher enter the life of Johan Eschbach, the former spy and present professor finds himself caught with the secret of high technology de ghosting, and the whole world, including his former spymasters, try