Tommaso Buscetta was involved in the Sicilian mob's expansion into trafficking heroin to the United States. Arrested in 1984, he gave investigators in-depth dirt on organized crime in Italy.
For the first time, officials were able to prosecute the Mafia as an institution in the 1987 MaxiTrial. At the end of the nearly two-year trial, most of the 450 defendants received guilty verdicts.
Buscetta also appeared in U.S. courts, testifying that the American mob bought heroin from the Sicilians and sold it out of pizza restaurants, leading to the trial's nickname of "Pizza Connection." His testimony earned him U.S. citizenship and witness protection.