Ghost Series / The Ghost of the Revelator / L. E. Modesitt, Jr.

Doctor Johan Eschbach had hoped for a quiet life in retirement from the secret service. He taught environmental science at the University of New Bruges and lived with his new wife, the singer Llysette du Boise. Llysette, who fled the burning remains of France, wants nothing more than to resume her singing career and forget her time in the prison camps of the Habsburg Empire.

But an unusual invitation from the Mormon state of Deseret inexorably draws Johan back into the spy business, even if he doesn’t know exactly why or for whom. It soon turns out that he is being used as a pawn in a deadly game of international manoeuvre that is pushing the world towards war.