Cardinal Lamberto left Rome with a large sum of money and several documents. Fearing that their corruption will be exposed, Keinszig, Lucchesi, and Gilday plot to murder the Pope. Gilday poisons the pontiff's tea, killing him in his sleep. The character of Lamberto and the film's depiction of the events which led to his murder are based upon one of the conspiracy theories surrounding the sudden death of the real-life Pope John Paul I, Albino Luciani. Like the Lamberto character, Luciani was discovered dead in his bed in 1978, 33 days after his election to the papacy. Various theories, such as the
Pope Vitalian the matter and pronounced John guiltless. He then wrote to Paulus demanding the restoration of John to his diocese and the return of the monasteries which had been unjustly taken from him. At the same time the pope directed the metropolitan to remove two deacons who had married after consecration. The introduction of church organ music is traditionally believed to date from the time of Vitalian's papacy. Vitalian died on January 27, 672. Venerated as a saint by the Catholic church, his feast day is celebrated each year on January 27. Pope Vitalian Pope Vitalian (; d. 27 January 672)