A church historian at the University of Münster, Professor Hubert Wolf is an eminent authority on the archives of the Holy See. He leads a team of scholars publishing online at www.pacelli-edition.de the reports, contained in the Vatican’s Secret Archives, that Eugenio Pacelli, the future Pope Pius XII, wrote while papal nuncio first in Munich and then in Berlin (1917-29). Previous archival research resulted in books on censorship by the Congregation of the Index and the Holy See’s attitude towards Nazi Germany during the pontificate of Pius XI (1922-1939). In The Nuns of Sant’Ambrogio, Wolf tells the complex and disturbing tale of a Roman convent of Third Order Franciscan nuns from a collection of documents gathered and produced by the Roman Inquisition between 185