The bombshell letter of “testimony” written by Archbishop Carlo Maria Viganò, the former apostolic nuncio to the United States, regarding the Vatican’s handling of sexual misconduct allegations against the disgraced former Archbishop of Washington, DC, Theodore McCarrick, has raised more forcefully than ever several questions, including: what did McCarrick’s successor, Cardinal Donald Wuerl, know – and when did he know it?

Cardinal Wuerl has said that he knew nothing of McCarrick’s alleged behaviour until news reached him of an allegation under review in the Archdiocese of New York, where McCarrick began his ecclesiastical career, according to which McCarrick sexually assaulted an altar boy on at least two occasions in St Patrick’s Cathedral, starting in 1971.