Discovered in a secret Vatican archive, this is the true, never-before-told story of poison, murder, and lesbian initiation rites in a nineteenth century convent. In 1858, Katherina von Hohenzollern, a German princess recently inducted into the convent of Sant'Ambrogio in Rome, wrote a frantic letter to her cousin, a confidant of the Pope, claiming that she was being abused and feared for her life. The subsequent investigation by the Church's Inquisition uncovered the extraordinary secrets...