Mafia's Most Wanted

Donnie Brasco: The Informant (1x13)

Air date: Jan 01, 2000

Former FBI agent Joe Pistone, who infiltrated the Mafia for six years as Donnie Brasco, reveals how his undercover work led to more than 100 convictions - and resulted in the death of underworld figure Dominick `Sonny Black' Napolitano.