Prisoner of the Vatican: The Popes, the Kings, and Garibaldi's Rebels in the Struggle to Rule Modern Italy

The Pope and Mussolini: The Secret History of Pius XI and the Rise of Fascism in Europe

The Kidnapping of Edgardo Mortara

The Popes Against the Jews: The Vatican's Role in the Rise of Modern Anti-Semitism

Princes at War: The Bitter Battle Inside Britain's Royal Family in the Darkest Days of WWII

Merchants in the Temple: Inside Pope Francis's Secret Battle Against Corruption in the Vatican