The Cadaver Synod (also called the Cadaver Trial or, in Latin, the Synodus Horrenda) is the name commonly given to the posthumous ecclesiastical trial of Pope Formosus, held in the Basilica of St. John Lateran in Rome during January of 897.
Before the proceedings the body of Formosus was exhumed and, according to some sources, seated on a throne while his successor, Pope Stephen VI, read the charges against him (to which Formosus was found guilty) and conducted the trial. The Cadaver Synod is remembered as one of the most bizarre episodes in the history of the medieval papacy.
January of 897, Stephen VI ordered that the body of his predecessor Formosus be removed from its tomb and brought to the papal court for judgement.
Formosus was accused of transmigrating sees in violation of canon law, of perjury, and of serving as a bishop while actually a layman. Liutprand and other sources say that Stephen had the body stripped of its papal vestments, cut off the three fingers of his right hand used for benedictions, and declared all of his acts and ordinations (including his ordination of Stephen VI as bishop of Anagni) invalid. The body was finally interred in a graveyard for foreigners, only to be dug up once again, tied to weights, and cast into the Tiber.
The more research I do, the more stuff I need to refute. Is this for real or is this a joke?