Whitbourn, John. Popes and Phantoms
Summary: A papal spy/emissary looks back on his life from 1486 in a world which is not quite ours.
Published: Gollancz 1993 (0575056533BUY), 1994 (0575057637BUY).
Published: Expanded from "Be Assured, He is Not There" and "The Flowering of the Reformation", both in Popes & Phantoms, Haunted Library 1992 (0906153247).