Modesitt returns to science fiction with Of Tangible Ghosts, a carefully crafted alternate universe novel. In this world, the Dutch never lost control of the Northeast, and France, Spain, and Chung Kuo are today's superpowers, as is Colombia. And in this universe, the ghosts of the dead linger, sometimes visible, sometimes speaking to the living. Johan Eschbach has retired from service as an agent of the government of Colombia and gone north to teach at a university in his native Dutch territory. Research is being conducted in the university's physics department - research on the control of ghosts - that is of interest to governments worldwide. And Johan is forced by his former employers to work again as a spy. When he discovers too much, he is marked for death. But at least one ghost wants to keep him alive.

L.E. Modesitt, Jr., has gained a legion of devoted fans for his science fiction as well as his epic fantasy novels. The Ghost of the Revelator is one of the best displays yet of his ability to blend dramatic, imaginative stories with rigorous social and scientific extrapolation. Doktor Johan Eschbach (the central character of Modesitt's popular alternate history SF novel, Of Tangible Ghosts) had hoped for a quiet life in retirement from the intelligence service, teaching environmental science at the University of New Bruges and living with his new wife, the vocalist Llysette du Boise. Llysette, a refugee from the burning remains of France, would herself like little more than to resume her singing career and forget her time in the prison camps of the Hapsburg Empire. But an unusual invitation from the Mormon nation of Deseret inexorably drags Johan back into the spy business, though he isn't quite sure why or for whom. It quickly becomes apparent that he is being used as a pawn in a deadly game of international maneuverings that are leading the world closer to war.

Set in a fascinating alternative world in which ghosts are real, the United States never came into existence and Russia is still ruled by the Romanovs, this sequel to Of Tangible Ghosts and The Ghost of the Revelator continues the adventures of semi-retired spy Dr. Johan Eschbach. His lovely wife Llysette du Boise, a refugee from the burning remains of France and a world-famous novelist, has been invited to provide a command performance for the Russian Imperial household. Johan accompanies her, allowing him to work on the oil concession in Russian Alaska that Columbia so desperately needs and do some spying on the side. Johan's espionage is carried out against the backdrop of the famous white nights of St. Petersburg, the nearly Arctic midsummer when the sun barely dips below the horizon and the sky seems to dissolve in ivory light. But even the oil shortage will fade to insignificance when Johan discovers what new weapons technology the Russians are developing, a threat even more fearsome than the atomic bombs of Austro-Hungary. Working in the tradition of Gordon R. Dickson and Poul Anderson for hard-edged adventure with sophisticated social and political dimensions, Modesitt provides a unique blend of speculation and intrigue that brings the trilogy to a rousing end.