Mafia informant Gaspare Spatuzza (C, obscured) is led surrounded by Italian police officers into a courtroom in Turin December 4, 2009. Italian Prime Minister Silvio Berlusconi goes back on trial for corruption on Friday, while in an unrelated Mafia case, a mobster-turned-witness may try to link him to the Cosa Nostra -- a connection he denies. Dell'Utri, a senator in Berlusconi's People of Freedom Party, is appealing against his conviction of association with the Mafia. He has been sentenced to nine years in prison. REUTERS/Alessandro Garofalo (ITALY CRIME LAW POLITICS)