Three times during the course of the murder investigation and subsequent trial, Aviello wrote to the court and the presiding judge, offering his account. He claimed he could show investigators where the murder weapon was hidden along with a set of keys from the house Knox shared with Meredith. At the time of the murder, Aviello and his brother - who has since vanished - were indeed living in Perugia: evidently, the Mafioso's story should have been investigated further by the authorities. His letters should, at the very least, have prompted police to look into the legitimacy of his evidence. Instead he was ignored, thereby providing Knox's defence team with crucial confirmation of the court's partiality: in effect, it had decided that she was guilty before the trial was even completed.